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7o3h

Murine CIII2 focus-refined from supercomplex CICIII2

Method: ELECTRON MICROSCOPY Dmax: 177.4 Å Quality: GOOD
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Cytochrome b-c1 complex subunit 1, mitochondrial

OrganismNot specified

UniProt Q9CZ13

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein heterocomplex Heteromer Protein × 21 PDB declaration: 21-meric（21） Consistent with protein copy count Chain A； UniProt 35–480 Chain L； UniProt 35–480 Not recorded Cytochrome b-c1 complex subunit 2, mitochondrial × 2 （Q9DB77） Cytochrome b × 2 （P00158） Cytochrome c1, heme protein, mitochondrial × 2 （Q9D0M3） Cytochrome b-c1 complex subunit Rieske, mitochondrial × 2 （Q9CR68） Cytochrome b-c1 complex subunit 7 × 2 （Q9CQB4） Cytochrome b-c1 complex subunit 8 × 2 （Q9CQ69） Cytochrome b-c1 complex subunit 6, mitochondrial × 2 （P99028） Cytochrome b-c1 complex subunit 9 × 2 （Q8R1I1） Cytochrome b-c1 complex subunit 10 × 2 （Q9CPX8） Cytochrome b-c1 complex subunit 9 × 1 （Q9CR68） 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 8 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 ELECTRON MICROSCOPY cryo-EM buffer：pH 7.7；CHAPS was added only upon freezing cryo-EM vitrification conditions：Cryogen ETHANE Resolution 2.60 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 7O3H Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
7O37 Murine supercomplex CIII2CIV in the assembled locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain A 35–480（446 aa）
Chain L 35–480（446 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 16 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 TGL TRISTEAROYLGLYCEROL × 1 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
7O3C Murine supercomplex CIII2CIV in the mature unlocked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain A 35–480（446 aa）
Chain L 35–480（446 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 15 CDL CARDIOLIPIN × 7 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
7O3E Murine supercomplex CIII2CIV in the intermediate locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 31 PDB declaration: 31-meric
Chain A 35–480（446 aa）
Chain L 35–480（446 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 13 CDL CARDIOLIPIN × 5 HEC HEME C × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AA 1–480（480 aa）
Chain Aa 1–480（480 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 CDL CARDIOLIPIN × 12 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IAR Respiratory complex CIII2, focus-refined of type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AA 1–480（480 aa）
Chain Aa 1–480（480 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 5 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AA 1–480（480 aa）
Chain Aa 1–480（480 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IB7 Respiratory complex CIII2, focus-refined of type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AA 1–480（480 aa）
Chain Aa 1–480（480 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 5 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 CDL CARDIOLIPIN × 4 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB9 Respiratory complex CI:CIII2, type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AA 1–480（480 aa）
Chain Aa 1–480（480 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 8 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IBC Respiratory complex CIII2, focus-refined of type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AA 1–480（480 aa）
Chain Aa 1–480（480 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 2 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IBD Respiratory complex CI:CIII2, type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AA 1–480（480 aa）
Chain Aa 1–480（480 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 6 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IBG Respiratory complex CIII2, focus-refined of type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AA 1–480（480 aa）
Chain Aa 1–480（480 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 CDL CARDIOLIPIN × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
8IC2 Respiratory complex CI:CIII2, type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AA 1–480（480 aa）
Chain Aa 1–480（480 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 14 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ZN ZINC ION × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 6.30 Å
8IC5 Respiratory complex CIII2, focus-refined of type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AA 1–480（480 aa）
Chain Aa 1–480（480 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8PW5 CS respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 92 PDB declaration: 92-meric
Chain A 1–480（480 aa）
Chain L 1–480（480 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 41 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 13 CDL CARDIOLIPIN × 18 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 CU COPPER (II) ION × 2 NA SODIUM ION × 2 HEA HEME-A × 4 MG MAGNESIUM ION × 3 CUA DINUCLEAR COPPER ION × 2 ZN ZINC ION × 3 TGL TRISTEAROYLGLYCEROL × 2 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8PW6 C respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain A 1–480（480 aa）
Chain L 1–480（480 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 12 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
8PW7 A respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain A 1–480（480 aa）
Chain L 1–480（480 aa）
Not recorded CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 9 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
8UCA Formation of I2+III2 supercomplex rescues respiratory chain defects Deposited 2023-09-26 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 111 PDB declaration: 111-meric
Chain 3A 35–480（446 aa）
Chain 3L 35–480（446 aa）
Not recorded MG MAGNESIUM ION × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 2 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 2 ZN ZINC ION × 2 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 4 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FMN FLAVIN MONONUCLEOTIDE × 2 SF4 IRON/SULFUR CLUSTER × 12 FES FE2/S2 (INORGANIC) CLUSTER × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å

17 other PDB entries and 17 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name QCR1_MOUSE
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–446； UniProt 35–480 Author chain L； PDBConstruct 1–446； UniProt 35–480

Cytochrome b-c1 complex subunit 2, mitochondrial

OrganismNot specified

UniProt Q9DB77

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein heterocomplex Heteromer Protein × 21 PDB declaration: 21-meric（21） Consistent with protein copy count Chain B； UniProt 15–453 Chain M； UniProt 15–453 Not recorded Cytochrome b-c1 complex subunit 1, mitochondrial × 2 （Q9CZ13） Cytochrome b × 2 （P00158） Cytochrome c1, heme protein, mitochondrial × 2 （Q9D0M3） Cytochrome b-c1 complex subunit Rieske, mitochondrial × 2 （Q9CR68） Cytochrome b-c1 complex subunit 7 × 2 （Q9CQB4） Cytochrome b-c1 complex subunit 8 × 2 （Q9CQ69） Cytochrome b-c1 complex subunit 6, mitochondrial × 2 （P99028） Cytochrome b-c1 complex subunit 9 × 2 （Q8R1I1） Cytochrome b-c1 complex subunit 10 × 2 （Q9CPX8） Cytochrome b-c1 complex subunit 9 × 1 （Q9CR68） 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 8 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 ELECTRON MICROSCOPY cryo-EM buffer：pH 7.7；CHAPS was added only upon freezing cryo-EM vitrification conditions：Cryogen ETHANE Resolution 2.60 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 7O3H Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
7O37 Murine supercomplex CIII2CIV in the assembled locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain B 15–453（439 aa）
Chain M 15–453（439 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 16 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 TGL TRISTEAROYLGLYCEROL × 1 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
7O3C Murine supercomplex CIII2CIV in the mature unlocked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain B 15–453（439 aa）
Chain M 15–453（439 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 15 CDL CARDIOLIPIN × 7 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
7O3E Murine supercomplex CIII2CIV in the intermediate locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 31 PDB declaration: 31-meric
Chain B 15–453（439 aa）
Chain M 15–453（439 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 13 CDL CARDIOLIPIN × 5 HEC HEME C × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AB 1–453（453 aa）
Chain Ab 1–453（453 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 CDL CARDIOLIPIN × 12 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IAR Respiratory complex CIII2, focus-refined of type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AB 1–453（453 aa）
Chain Ab 1–453（453 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 5 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AB 1–453（453 aa）
Chain Ab 1–453（453 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IB7 Respiratory complex CIII2, focus-refined of type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AB 1–453（453 aa）
Chain Ab 1–453（453 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 5 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 CDL CARDIOLIPIN × 4 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB9 Respiratory complex CI:CIII2, type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AB 1–453（453 aa）
Chain Ab 1–453（453 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 8 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IBC Respiratory complex CIII2, focus-refined of type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AB 1–453（453 aa）
Chain Ab 1–453（453 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 2 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IBD Respiratory complex CI:CIII2, type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AB 1–453（453 aa）
Chain Ab 1–453（453 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 6 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IBG Respiratory complex CIII2, focus-refined of type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AB 1–453（453 aa）
Chain Ab 1–453（453 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 CDL CARDIOLIPIN × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
8IC2 Respiratory complex CI:CIII2, type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AB 1–453（453 aa）
Chain Ab 1–453（453 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 14 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ZN ZINC ION × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 6.30 Å
8IC5 Respiratory complex CIII2, focus-refined of type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AB 1–453（453 aa）
Chain Ab 1–453（453 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8PW5 CS respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 92 PDB declaration: 92-meric
Chain B 1–453（453 aa）
Chain M 1–453（453 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 41 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 13 CDL CARDIOLIPIN × 18 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 CU COPPER (II) ION × 2 NA SODIUM ION × 2 HEA HEME-A × 4 MG MAGNESIUM ION × 3 CUA DINUCLEAR COPPER ION × 2 ZN ZINC ION × 3 TGL TRISTEAROYLGLYCEROL × 2 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8PW6 C respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain B 1–453（453 aa）
Chain M 1–453（453 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 12 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
8PW7 A respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain B 1–453（453 aa）
Chain M 1–453（453 aa）
Not recorded CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 9 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
8UCA Formation of I2+III2 supercomplex rescues respiratory chain defects Deposited 2023-09-26 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 111 PDB declaration: 111-meric
Chain 3B 15–453（439 aa）
Chain 3M 15–453（439 aa）
Not recorded MG MAGNESIUM ION × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 2 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 2 ZN ZINC ION × 2 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 4 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FMN FLAVIN MONONUCLEOTIDE × 2 SF4 IRON/SULFUR CLUSTER × 12 FES FE2/S2 (INORGANIC) CLUSTER × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å

17 other PDB entries and 17 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name QCR2_MOUSE
Isoform —
PDB entities 2
Chains and sequence ranges Author chain B； PDBConstruct 1–439； UniProt 15–453 Author chain M； PDBConstruct 1–439； UniProt 15–453

Cytochrome b

OrganismNot specified

UniProt P00158

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein heterocomplex Heteromer Protein × 21 PDB declaration: 21-meric（21） Consistent with protein copy count Chain C； UniProt 1–381 Chain N； UniProt 1–381 Not recorded Cytochrome b-c1 complex subunit 1, mitochondrial × 2 （Q9CZ13） Cytochrome b-c1 complex subunit 2, mitochondrial × 2 （Q9DB77） Cytochrome c1, heme protein, mitochondrial × 2 （Q9D0M3） Cytochrome b-c1 complex subunit Rieske, mitochondrial × 2 （Q9CR68） Cytochrome b-c1 complex subunit 7 × 2 （Q9CQB4） Cytochrome b-c1 complex subunit 8 × 2 （Q9CQ69） Cytochrome b-c1 complex subunit 6, mitochondrial × 2 （P99028） Cytochrome b-c1 complex subunit 9 × 2 （Q8R1I1） Cytochrome b-c1 complex subunit 10 × 2 （Q9CPX8） Cytochrome b-c1 complex subunit 9 × 1 （Q9CR68） 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 8 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 ELECTRON MICROSCOPY cryo-EM buffer：pH 7.7；CHAPS was added only upon freezing cryo-EM vitrification conditions：Cryogen ETHANE Resolution 2.60 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 7O3H Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
7O37 Murine supercomplex CIII2CIV in the assembled locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain C 1–381（381 aa）
Chain N 1–381（381 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 16 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 TGL TRISTEAROYLGLYCEROL × 1 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
7O3C Murine supercomplex CIII2CIV in the mature unlocked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain C 1–381（381 aa）
Chain N 1–381（381 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 15 CDL CARDIOLIPIN × 7 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
7O3E Murine supercomplex CIII2CIV in the intermediate locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 31 PDB declaration: 31-meric
Chain C 1–381（381 aa）
Chain N 1–381（381 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 13 CDL CARDIOLIPIN × 5 HEC HEME C × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AC 1–381（381 aa）
Chain Ac 1–381（381 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 CDL CARDIOLIPIN × 12 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IAR Respiratory complex CIII2, focus-refined of type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AC 1–381（381 aa）
Chain Ac 1–381（381 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 5 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AC 1–381（381 aa）
Chain Ac 1–381（381 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IB7 Respiratory complex CIII2, focus-refined of type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AC 1–381（381 aa）
Chain Ac 1–381（381 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 5 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 CDL CARDIOLIPIN × 4 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB9 Respiratory complex CI:CIII2, type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AC 1–381（381 aa）
Chain Ac 1–381（381 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 8 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IBC Respiratory complex CIII2, focus-refined of type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AC 1–381（381 aa）
Chain Ac 1–381（381 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 2 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IBD Respiratory complex CI:CIII2, type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AC 1–381（381 aa）
Chain Ac 1–381（381 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 6 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IBG Respiratory complex CIII2, focus-refined of type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AC 1–381（381 aa）
Chain Ac 1–381（381 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 CDL CARDIOLIPIN × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
8IC2 Respiratory complex CI:CIII2, type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AC 1–381（381 aa）
Chain Ac 1–381（381 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 14 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ZN ZINC ION × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 6.30 Å
8IC5 Respiratory complex CIII2, focus-refined of type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AC 1–381（381 aa）
Chain Ac 1–381（381 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8PW5 CS respirasome from murine liver Deposited 2023-07-19 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 92 PDB declaration: 92-meric
Chain C 1–381（381 aa）
Chain N 1–381（381 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 41 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 13 CDL CARDIOLIPIN × 18 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 CU COPPER (II) ION × 2 NA SODIUM ION × 2 HEA HEME-A × 4 MG MAGNESIUM ION × 3 CUA DINUCLEAR COPPER ION × 2 ZN ZINC ION × 3 TGL TRISTEAROYLGLYCEROL × 2 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8PW6 C respirasome from murine liver Deposited 2023-07-19 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain C 1–381（381 aa）
Chain N 1–381（381 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 12 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
8PW7 A respirasome from murine liver Deposited 2023-07-19 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain C 1–381（381 aa）
Chain N 1–381（381 aa）
Not recorded CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 9 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
8UCA Formation of I2+III2 supercomplex rescues respiratory chain defects Deposited 2023-09-26 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 111 PDB declaration: 111-meric
Chain 3C 1–380（380 aa）
Chain 3N 1–380（380 aa）
Not recorded MG MAGNESIUM ION × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 2 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 2 ZN ZINC ION × 2 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 4 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FMN FLAVIN MONONUCLEOTIDE × 2 SF4 IRON/SULFUR CLUSTER × 12 FES FE2/S2 (INORGANIC) CLUSTER × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å

17 other PDB entries and 17 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CYB_MOUSE
Isoform —
PDB entities 3
Chains and sequence ranges Author chain C； PDBConstruct 1–381； UniProt 1–381 Author chain N； PDBConstruct 1–381； UniProt 1–381

Cytochrome c1, heme protein, mitochondrial

OrganismNot specified

UniProt Q9D0M3

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein heterocomplex Heteromer Protein × 21 PDB declaration: 21-meric（21） Consistent with protein copy count Chain D； UniProt 85–325 Chain O； UniProt 85–325 Not recorded Cytochrome b-c1 complex subunit 1, mitochondrial × 2 （Q9CZ13） Cytochrome b-c1 complex subunit 2, mitochondrial × 2 （Q9DB77） Cytochrome b × 2 （P00158） Cytochrome b-c1 complex subunit Rieske, mitochondrial × 2 （Q9CR68） Cytochrome b-c1 complex subunit 7 × 2 （Q9CQB4） Cytochrome b-c1 complex subunit 8 × 2 （Q9CQ69） Cytochrome b-c1 complex subunit 6, mitochondrial × 2 （P99028） Cytochrome b-c1 complex subunit 9 × 2 （Q8R1I1） Cytochrome b-c1 complex subunit 10 × 2 （Q9CPX8） Cytochrome b-c1 complex subunit 9 × 1 （Q9CR68） 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 8 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 ELECTRON MICROSCOPY cryo-EM buffer：pH 7.7；CHAPS was added only upon freezing cryo-EM vitrification conditions：Cryogen ETHANE Resolution 2.60 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 7O3H Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
7O37 Murine supercomplex CIII2CIV in the assembled locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain D 85–325（241 aa）
Chain O 85–325（241 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 16 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 TGL TRISTEAROYLGLYCEROL × 1 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
7O3C Murine supercomplex CIII2CIV in the mature unlocked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain D 85–325（241 aa）
Chain O 85–325（241 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 15 CDL CARDIOLIPIN × 7 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
7O3E Murine supercomplex CIII2CIV in the intermediate locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 31 PDB declaration: 31-meric
Chain D 85–325（241 aa）
Chain O 85–325（241 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 13 CDL CARDIOLIPIN × 5 HEC HEME C × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AD 1–325（325 aa）
Chain Ad 1–325（325 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 CDL CARDIOLIPIN × 12 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IAR Respiratory complex CIII2, focus-refined of type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AD 1–325（325 aa）
Chain Ad 1–325（325 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 5 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AD 1–325（325 aa）
Chain Ad 1–325（325 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IB7 Respiratory complex CIII2, focus-refined of type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AD 1–325（325 aa）
Chain Ad 1–325（325 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 5 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 CDL CARDIOLIPIN × 4 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB9 Respiratory complex CI:CIII2, type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AD 1–325（325 aa）
Chain Ad 1–325（325 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 8 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IBC Respiratory complex CIII2, focus-refined of type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AD 1–325（325 aa）
Chain Ad 1–325（325 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 2 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IBD Respiratory complex CI:CIII2, type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AD 1–325（325 aa）
Chain Ad 1–325（325 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 6 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IBG Respiratory complex CIII2, focus-refined of type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AD 1–325（325 aa）
Chain Ad 1–325（325 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 CDL CARDIOLIPIN × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
8IC2 Respiratory complex CI:CIII2, type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AD 1–325（325 aa）
Chain Ad 1–325（325 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 14 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ZN ZINC ION × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 6.30 Å
8IC5 Respiratory complex CIII2, focus-refined of type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AD 1–325（325 aa）
Chain Ad 1–325（325 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8PW5 CS respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 92 PDB declaration: 92-meric
Chain D 1–325（325 aa）
Chain O 1–325（325 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 41 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 13 CDL CARDIOLIPIN × 18 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 CU COPPER (II) ION × 2 NA SODIUM ION × 2 HEA HEME-A × 4 MG MAGNESIUM ION × 3 CUA DINUCLEAR COPPER ION × 2 ZN ZINC ION × 3 TGL TRISTEAROYLGLYCEROL × 2 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8PW6 C respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain D 1–325（325 aa）
Chain O 1–325（325 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 12 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
8PW7 A respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain D 1–325（325 aa）
Chain O 1–325（325 aa）
Not recorded CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 9 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
8UCA Formation of I2+III2 supercomplex rescues respiratory chain defects Deposited 2023-09-26 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 111 PDB declaration: 111-meric
Chain 3D 85–325（241 aa）
Chain 3O 85–325（241 aa）
Not recorded MG MAGNESIUM ION × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 2 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 2 ZN ZINC ION × 2 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 4 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FMN FLAVIN MONONUCLEOTIDE × 2 SF4 IRON/SULFUR CLUSTER × 12 FES FE2/S2 (INORGANIC) CLUSTER × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å

17 other PDB entries and 17 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CY1_MOUSE
Isoform —
PDB entities 4
Chains and sequence ranges Author chain D； PDBConstruct 1–241； UniProt 85–325 Author chain O； PDBConstruct 1–241； UniProt 85–325

Cytochrome b-c1 complex subunit Rieske, mitochondrial

OrganismNot specified

UniProt Q9CR68

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein heterocomplex Heteromer Protein × 21 PDB declaration: 21-meric（21） Consistent with protein copy count Chain E； UniProt 79–274 Chain P； UniProt 79–274 Chain T； UniProt 1–78 Not recorded Cytochrome b-c1 complex subunit 1, mitochondrial × 2 （Q9CZ13） Cytochrome b-c1 complex subunit 2, mitochondrial × 2 （Q9DB77） Cytochrome b × 2 （P00158） Cytochrome c1, heme protein, mitochondrial × 2 （Q9D0M3） Cytochrome b-c1 complex subunit 7 × 2 （Q9CQB4） Cytochrome b-c1 complex subunit 8 × 2 （Q9CQ69） Cytochrome b-c1 complex subunit 6, mitochondrial × 2 （P99028） Cytochrome b-c1 complex subunit 9 × 2 （Q8R1I1） Cytochrome b-c1 complex subunit 10 × 2 （Q9CPX8） 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 8 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 ELECTRON MICROSCOPY cryo-EM buffer：pH 7.7；CHAPS was added only upon freezing cryo-EM vitrification conditions：Cryogen ETHANE Resolution 2.60 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 7O3H Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
7O37 Murine supercomplex CIII2CIV in the assembled locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain E 79–274（196 aa）
Chain P 79–274（196 aa）
Chain T 1–78（78 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 16 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 TGL TRISTEAROYLGLYCEROL × 1 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
7O3C Murine supercomplex CIII2CIV in the mature unlocked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain E 79–274（196 aa）
Chain P 79–274（196 aa）
Chain T 1–78（78 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 15 CDL CARDIOLIPIN × 7 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
7O3E Murine supercomplex CIII2CIV in the intermediate locked conformation Deposited 2021-04-01 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 31 PDB declaration: 31-meric
Chain P 79–274（196 aa）
Chain T 1–78（78 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 13 CDL CARDIOLIPIN × 5 HEC HEME C × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AE 1–274（274 aa）
Chain AI 1–274（274 aa）
Chain Ae 1–274（274 aa）
Chain Ai 1–274（274 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 CDL CARDIOLIPIN × 12 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IAR Respiratory complex CIII2, focus-refined of type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AE 1–274（274 aa）
Chain AI 1–274（274 aa）
Chain Ae 1–274（274 aa）
Chain Ai 1–274（274 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 5 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AE 1–274（274 aa）
Chain AI 1–274（274 aa）
Chain Ae 1–274（274 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IB7 Respiratory complex CIII2, focus-refined of type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AE 1–274（274 aa）
Chain AI 1–274（274 aa）
Chain Ae 1–274（274 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 5 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 CDL CARDIOLIPIN × 4 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB9 Respiratory complex CI:CIII2, type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AE 1–274（274 aa）
Chain AI 1–274（274 aa）
Chain Ae 1–274（274 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 8 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IBC Respiratory complex CIII2, focus-refined of type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AE 1–274（274 aa）
Chain AI 1–274（274 aa）
Chain Ae 1–274（274 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 2 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IBD Respiratory complex CI:CIII2, type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AE 1–274（274 aa）
Chain AI 1–274（274 aa）
Chain Ae 1–274（274 aa）
Chain Ai 1–274（274 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 6 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IBG Respiratory complex CIII2, focus-refined of type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AE 1–274（274 aa）
Chain AI 1–274（274 aa）
Chain Ae 1–274（274 aa）
Chain Ai 1–274（274 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 CDL CARDIOLIPIN × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
8IC2 Respiratory complex CI:CIII2, type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AE 1–274（274 aa）
Chain AI 1–274（274 aa）
Chain Ae 1–274（274 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 14 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ZN ZINC ION × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 6.30 Å
8IC5 Respiratory complex CIII2, focus-refined of type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AE 1–274（274 aa）
Chain AI 1–274（274 aa）
Chain Ae 1–274（274 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8PW5 CS respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 92 PDB declaration: 92-meric
Chain E 1–274（274 aa）
Chain P 1–274（274 aa）
Chain T 1–274（274 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 41 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 13 CDL CARDIOLIPIN × 18 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 CU COPPER (II) ION × 2 NA SODIUM ION × 2 HEA HEME-A × 4 MG MAGNESIUM ION × 3 CUA DINUCLEAR COPPER ION × 2 ZN ZINC ION × 3 TGL TRISTEAROYLGLYCEROL × 2 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8PW6 C respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain E 1–274（274 aa）
Chain P 1–274（274 aa）
Chain T 1–274（274 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 12 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
8PW7 A respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain E 1–274（274 aa）
Chain P 1–274（274 aa）
Chain T 1–274（274 aa）
Not recorded CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 9 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
8UCA Formation of I2+III2 supercomplex rescues respiratory chain defects Deposited 2023-09-26 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 111 PDB declaration: 111-meric
Chain 3E 79–274（196 aa）
Chain 3P 79–274（196 aa）
Chain 3T 1–78（78 aa）
Not recorded MG MAGNESIUM ION × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 2 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 2 ZN ZINC ION × 2 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 4 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FMN FLAVIN MONONUCLEOTIDE × 2 SF4 IRON/SULFUR CLUSTER × 12 FES FE2/S2 (INORGANIC) CLUSTER × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å

17 other PDB entries and 17 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name UCRI_MOUSE
Isoform —
PDB entities 5, 11
Chains and sequence ranges Author chain E； PDBConstruct 1–196； UniProt 79–274 Author chain P； PDBConstruct 1–196； UniProt 79–274 Author chain T； PDBConstruct 1–78； UniProt 1–78

Cytochrome b-c1 complex subunit 7

OrganismNot specified

UniProt Q9CQB4

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein heterocomplex Heteromer Protein × 21 PDB declaration: 21-meric（21） Consistent with protein copy count Chain F； UniProt 2–111 Chain Q； UniProt 2–111 Not recorded Cytochrome b-c1 complex subunit 1, mitochondrial × 2 （Q9CZ13） Cytochrome b-c1 complex subunit 2, mitochondrial × 2 （Q9DB77） Cytochrome b × 2 （P00158） Cytochrome c1, heme protein, mitochondrial × 2 （Q9D0M3） Cytochrome b-c1 complex subunit Rieske, mitochondrial × 2 （Q9CR68） Cytochrome b-c1 complex subunit 8 × 2 （Q9CQ69） Cytochrome b-c1 complex subunit 6, mitochondrial × 2 （P99028） Cytochrome b-c1 complex subunit 9 × 2 （Q8R1I1） Cytochrome b-c1 complex subunit 10 × 2 （Q9CPX8） Cytochrome b-c1 complex subunit 9 × 1 （Q9CR68） 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 8 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 ELECTRON MICROSCOPY cryo-EM buffer：pH 7.7；CHAPS was added only upon freezing cryo-EM vitrification conditions：Cryogen ETHANE Resolution 2.60 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 7O3H Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
7O37 Murine supercomplex CIII2CIV in the assembled locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain F 2–111（110 aa）
Chain Q 2–111（110 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 16 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 TGL TRISTEAROYLGLYCEROL × 1 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
7O3C Murine supercomplex CIII2CIV in the mature unlocked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain F 2–111（110 aa）
Chain Q 2–111（110 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 15 CDL CARDIOLIPIN × 7 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
7O3E Murine supercomplex CIII2CIV in the intermediate locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 31 PDB declaration: 31-meric
Chain F 2–111（110 aa）
Chain Q 2–111（110 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 13 CDL CARDIOLIPIN × 5 HEC HEME C × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AF 1–111（111 aa）
Chain Af 1–111（111 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 CDL CARDIOLIPIN × 12 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IAR Respiratory complex CIII2, focus-refined of type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AF 1–111（111 aa）
Chain Af 1–111（111 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 5 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AF 1–111（111 aa）
Chain Af 1–111（111 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IB7 Respiratory complex CIII2, focus-refined of type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AF 1–111（111 aa）
Chain Af 1–111（111 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 5 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 CDL CARDIOLIPIN × 4 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB9 Respiratory complex CI:CIII2, type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AF 1–111（111 aa）
Chain Af 1–111（111 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 8 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IBC Respiratory complex CIII2, focus-refined of type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AF 1–111（111 aa）
Chain Af 1–111（111 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 2 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IBD Respiratory complex CI:CIII2, type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AF 1–111（111 aa）
Chain Af 1–111（111 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 6 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IBG Respiratory complex CIII2, focus-refined of type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AF 1–111（111 aa）
Chain Af 1–111（111 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 CDL CARDIOLIPIN × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
8IC2 Respiratory complex CI:CIII2, type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AF 1–111（111 aa）
Chain Af 1–111（111 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 14 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ZN ZINC ION × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 6.30 Å
8IC5 Respiratory complex CIII2, focus-refined of type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AF 1–111（111 aa）
Chain Af 1–111（111 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8PW5 CS respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 92 PDB declaration: 92-meric
Chain F 1–111（111 aa）
Chain Q 1–111（111 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 41 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 13 CDL CARDIOLIPIN × 18 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 CU COPPER (II) ION × 2 NA SODIUM ION × 2 HEA HEME-A × 4 MG MAGNESIUM ION × 3 CUA DINUCLEAR COPPER ION × 2 ZN ZINC ION × 3 TGL TRISTEAROYLGLYCEROL × 2 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8PW6 C respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain F 1–111（111 aa）
Chain Q 1–111（111 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 12 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
8PW7 A respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain F 1–111（111 aa）
Chain Q 1–111（111 aa）
Not recorded CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 9 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
8UCA Formation of I2+III2 supercomplex rescues respiratory chain defects Deposited 2023-09-26 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 111 PDB declaration: 111-meric
Chain 3F 2–111（110 aa）
Chain 3Q 2–111（110 aa）
Not recorded MG MAGNESIUM ION × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 2 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 2 ZN ZINC ION × 2 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 4 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FMN FLAVIN MONONUCLEOTIDE × 2 SF4 IRON/SULFUR CLUSTER × 12 FES FE2/S2 (INORGANIC) CLUSTER × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å

17 other PDB entries and 17 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name Q9CQB4_MOUSE
Isoform —
PDB entities 6
Chains and sequence ranges Author chain F； PDBConstruct 1–110； UniProt 2–111 Author chain Q； PDBConstruct 1–110； UniProt 2–111

Cytochrome b-c1 complex subunit 8

OrganismNot specified

UniProt Q9CQ69

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein heterocomplex Heteromer Protein × 21 PDB declaration: 21-meric（21） Consistent with protein copy count Chain G； UniProt 2–82 Chain R； UniProt 2–82 Not recorded Cytochrome b-c1 complex subunit 1, mitochondrial × 2 （Q9CZ13） Cytochrome b-c1 complex subunit 2, mitochondrial × 2 （Q9DB77） Cytochrome b × 2 （P00158） Cytochrome c1, heme protein, mitochondrial × 2 （Q9D0M3） Cytochrome b-c1 complex subunit Rieske, mitochondrial × 2 （Q9CR68） Cytochrome b-c1 complex subunit 7 × 2 （Q9CQB4） Cytochrome b-c1 complex subunit 6, mitochondrial × 2 （P99028） Cytochrome b-c1 complex subunit 9 × 2 （Q8R1I1） Cytochrome b-c1 complex subunit 10 × 2 （Q9CPX8） Cytochrome b-c1 complex subunit 9 × 1 （Q9CR68） 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 8 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 ELECTRON MICROSCOPY cryo-EM buffer：pH 7.7；CHAPS was added only upon freezing cryo-EM vitrification conditions：Cryogen ETHANE Resolution 2.60 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 7O3H Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
7O37 Murine supercomplex CIII2CIV in the assembled locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain G 2–82（81 aa）
Chain R 2–82（81 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 16 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 TGL TRISTEAROYLGLYCEROL × 1 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
7O3C Murine supercomplex CIII2CIV in the mature unlocked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain G 2–82（81 aa）
Chain R 2–82（81 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 15 CDL CARDIOLIPIN × 7 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
7O3E Murine supercomplex CIII2CIV in the intermediate locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 31 PDB declaration: 31-meric
Chain G 2–82（81 aa）
Chain R 2–82（81 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 13 CDL CARDIOLIPIN × 5 HEC HEME C × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AG 1–82（82 aa）
Chain Ag 1–82（82 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 CDL CARDIOLIPIN × 12 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IAR Respiratory complex CIII2, focus-refined of type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AG 1–82（82 aa）
Chain Ag 1–82（82 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 5 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AG 1–82（82 aa）
Chain Ag 1–82（82 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IB7 Respiratory complex CIII2, focus-refined of type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AG 1–82（82 aa）
Chain Ag 1–82（82 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 5 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 CDL CARDIOLIPIN × 4 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB9 Respiratory complex CI:CIII2, type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AG 1–82（82 aa）
Chain Ag 1–82（82 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 8 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IBC Respiratory complex CIII2, focus-refined of type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AG 1–82（82 aa）
Chain Ag 1–82（82 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 2 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IBD Respiratory complex CI:CIII2, type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AG 1–82（82 aa）
Chain Ag 1–82（82 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 6 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IBG Respiratory complex CIII2, focus-refined of type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AG 1–82（82 aa）
Chain Ag 1–82（82 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 CDL CARDIOLIPIN × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
8IC2 Respiratory complex CI:CIII2, type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AG 1–82（82 aa）
Chain Ag 1–82（82 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 14 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ZN ZINC ION × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 6.30 Å
8IC5 Respiratory complex CIII2, focus-refined of type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AG 1–82（82 aa）
Chain Ag 1–82（82 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8PW5 CS respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 92 PDB declaration: 92-meric
Chain G 1–82（82 aa）
Chain R 1–82（82 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 41 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 13 CDL CARDIOLIPIN × 18 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 CU COPPER (II) ION × 2 NA SODIUM ION × 2 HEA HEME-A × 4 MG MAGNESIUM ION × 3 CUA DINUCLEAR COPPER ION × 2 ZN ZINC ION × 3 TGL TRISTEAROYLGLYCEROL × 2 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8PW6 C respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain G 1–82（82 aa）
Chain R 1–82（82 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 12 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
8PW7 A respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain G 1–82（82 aa）
Chain R 1–82（82 aa）
Not recorded CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 9 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
8UCA Formation of I2+III2 supercomplex rescues respiratory chain defects Deposited 2023-09-26 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 111 PDB declaration: 111-meric
Chain 3G 2–82（81 aa）
Chain 3R 2–82（81 aa）
Not recorded MG MAGNESIUM ION × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 2 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 2 ZN ZINC ION × 2 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 4 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FMN FLAVIN MONONUCLEOTIDE × 2 SF4 IRON/SULFUR CLUSTER × 12 FES FE2/S2 (INORGANIC) CLUSTER × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å

17 other PDB entries and 17 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name QCR8_MOUSE
Isoform —
PDB entities 7
Chains and sequence ranges Author chain G； PDBConstruct 1–81； UniProt 2–82 Author chain R； PDBConstruct 1–81； UniProt 2–82

Cytochrome b-c1 complex subunit 6, mitochondrial

OrganismNot specified

UniProt P99028

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein heterocomplex Heteromer Protein × 21 PDB declaration: 21-meric（21） Consistent with protein copy count Chain H； UniProt 14–89 Chain S； UniProt 14–89 Not recorded Cytochrome b-c1 complex subunit 1, mitochondrial × 2 （Q9CZ13） Cytochrome b-c1 complex subunit 2, mitochondrial × 2 （Q9DB77） Cytochrome b × 2 （P00158） Cytochrome c1, heme protein, mitochondrial × 2 （Q9D0M3） Cytochrome b-c1 complex subunit Rieske, mitochondrial × 2 （Q9CR68） Cytochrome b-c1 complex subunit 7 × 2 （Q9CQB4） Cytochrome b-c1 complex subunit 8 × 2 （Q9CQ69） Cytochrome b-c1 complex subunit 9 × 2 （Q8R1I1） Cytochrome b-c1 complex subunit 10 × 2 （Q9CPX8） Cytochrome b-c1 complex subunit 9 × 1 （Q9CR68） 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 8 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 ELECTRON MICROSCOPY cryo-EM buffer：pH 7.7；CHAPS was added only upon freezing cryo-EM vitrification conditions：Cryogen ETHANE Resolution 2.60 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 7O3H Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
7O37 Murine supercomplex CIII2CIV in the assembled locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain H 14–89（76 aa）
Chain S 14–89（76 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 16 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 TGL TRISTEAROYLGLYCEROL × 1 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
7O3C Murine supercomplex CIII2CIV in the mature unlocked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain H 14–89（76 aa）
Chain S 14–89（76 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 15 CDL CARDIOLIPIN × 7 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
7O3E Murine supercomplex CIII2CIV in the intermediate locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 31 PDB declaration: 31-meric
Chain H 14–89（76 aa）
Chain S 14–89（76 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 13 CDL CARDIOLIPIN × 5 HEC HEME C × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AH 1–89（89 aa）
Chain Ah 1–89（89 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 CDL CARDIOLIPIN × 12 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IAR Respiratory complex CIII2, focus-refined of type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AH 1–89（89 aa）
Chain Ah 1–89（89 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 5 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AH 1–89（89 aa）
Chain Ah 1–89（89 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IB7 Respiratory complex CIII2, focus-refined of type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AH 1–89（89 aa）
Chain Ah 1–89（89 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 5 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 CDL CARDIOLIPIN × 4 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB9 Respiratory complex CI:CIII2, type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AH 1–89（89 aa）
Chain Ah 1–89（89 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 8 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IBC Respiratory complex CIII2, focus-refined of type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AH 1–89（89 aa）
Chain Ah 1–89（89 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 2 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IBD Respiratory complex CI:CIII2, type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AH 1–89（89 aa）
Chain Ah 1–89（89 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 6 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IBG Respiratory complex CIII2, focus-refined of type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AH 1–89（89 aa）
Chain Ah 1–89（89 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 CDL CARDIOLIPIN × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
8IC2 Respiratory complex CI:CIII2, type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AH 1–89（89 aa）
Chain Ah 1–89（89 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 14 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ZN ZINC ION × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 6.30 Å
8IC5 Respiratory complex CIII2, focus-refined of type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AH 1–89（89 aa）
Chain Ah 1–89（89 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8PW5 CS respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 92 PDB declaration: 92-meric
Chain H 1–89（89 aa）
Chain S 1–89（89 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 41 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 13 CDL CARDIOLIPIN × 18 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 CU COPPER (II) ION × 2 NA SODIUM ION × 2 HEA HEME-A × 4 MG MAGNESIUM ION × 3 CUA DINUCLEAR COPPER ION × 2 ZN ZINC ION × 3 TGL TRISTEAROYLGLYCEROL × 2 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8PW6 C respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain H 1–89（89 aa）
Chain S 1–89（89 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 12 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
8PW7 A respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain H 1–89（89 aa）
Chain S 1–89（89 aa）
Not recorded CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 9 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
8UCA Formation of I2+III2 supercomplex rescues respiratory chain defects Deposited 2023-09-26 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 111 PDB declaration: 111-meric
Chain 3H 14–89（76 aa）
Chain 3S 14–89（76 aa）
Not recorded MG MAGNESIUM ION × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 2 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 2 ZN ZINC ION × 2 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 4 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FMN FLAVIN MONONUCLEOTIDE × 2 SF4 IRON/SULFUR CLUSTER × 12 FES FE2/S2 (INORGANIC) CLUSTER × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å

17 other PDB entries and 17 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name QCR6_MOUSE
Isoform —
PDB entities 8
Chains and sequence ranges Author chain H； PDBConstruct 1–76； UniProt 14–89 Author chain S； PDBConstruct 1–76； UniProt 14–89

Cytochrome b-c1 complex subunit 9

OrganismNot specified

UniProt Q8R1I1

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein heterocomplex Heteromer Protein × 21 PDB declaration: 21-meric（21） Consistent with protein copy count Chain J； UniProt 2–64 Chain U； UniProt 2–64 Not recorded Cytochrome b-c1 complex subunit 1, mitochondrial × 2 （Q9CZ13） Cytochrome b-c1 complex subunit 2, mitochondrial × 2 （Q9DB77） Cytochrome b × 2 （P00158） Cytochrome c1, heme protein, mitochondrial × 2 （Q9D0M3） Cytochrome b-c1 complex subunit Rieske, mitochondrial × 2 （Q9CR68） Cytochrome b-c1 complex subunit 7 × 2 （Q9CQB4） Cytochrome b-c1 complex subunit 8 × 2 （Q9CQ69） Cytochrome b-c1 complex subunit 6, mitochondrial × 2 （P99028） Cytochrome b-c1 complex subunit 10 × 2 （Q9CPX8） Cytochrome b-c1 complex subunit 9 × 1 （Q9CR68） 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 8 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 ELECTRON MICROSCOPY cryo-EM buffer：pH 7.7；CHAPS was added only upon freezing cryo-EM vitrification conditions：Cryogen ETHANE Resolution 2.60 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 7O3H Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
7O37 Murine supercomplex CIII2CIV in the assembled locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain J 2–64（63 aa）
Chain U 2–64（63 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 16 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 TGL TRISTEAROYLGLYCEROL × 1 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
7O3C Murine supercomplex CIII2CIV in the mature unlocked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain J 2–64（63 aa）
Chain U 2–64（63 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 15 CDL CARDIOLIPIN × 7 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
7O3E Murine supercomplex CIII2CIV in the intermediate locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 31 PDB declaration: 31-meric
Chain J 2–64（63 aa）
Chain U 2–64（63 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 13 CDL CARDIOLIPIN × 5 HEC HEME C × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AJ 1–64（64 aa）
Chain Aj 1–64（64 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 CDL CARDIOLIPIN × 12 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IAR Respiratory complex CIII2, focus-refined of type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AJ 1–64（64 aa）
Chain Aj 1–64（64 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 5 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AJ 1–64（64 aa）
Chain Aj 1–64（64 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IB7 Respiratory complex CIII2, focus-refined of type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AJ 1–64（64 aa）
Chain Aj 1–64（64 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 5 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 CDL CARDIOLIPIN × 4 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB9 Respiratory complex CI:CIII2, type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AJ 1–64（64 aa）
Chain Aj 1–64（64 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 8 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IBC Respiratory complex CIII2, focus-refined of type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AJ 1–64（64 aa）
Chain Aj 1–64（64 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 2 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IBD Respiratory complex CI:CIII2, type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AJ 1–64（64 aa）
Chain Aj 1–64（64 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 6 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IBG Respiratory complex CIII2, focus-refined of type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AJ 1–64（64 aa）
Chain Aj 1–64（64 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 CDL CARDIOLIPIN × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
8IC2 Respiratory complex CI:CIII2, type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AJ 1–64（64 aa）
Chain Aj 1–64（64 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 14 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ZN ZINC ION × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 6.30 Å
8IC5 Respiratory complex CIII2, focus-refined of type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AJ 1–64（64 aa）
Chain Aj 1–64（64 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8PW5 CS respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 92 PDB declaration: 92-meric
Chain J 1–64（64 aa）
Chain U 1–64（64 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 41 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 13 CDL CARDIOLIPIN × 18 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 CU COPPER (II) ION × 2 NA SODIUM ION × 2 HEA HEME-A × 4 MG MAGNESIUM ION × 3 CUA DINUCLEAR COPPER ION × 2 ZN ZINC ION × 3 TGL TRISTEAROYLGLYCEROL × 2 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8PW6 C respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain J 1–64（64 aa）
Chain U 1–64（64 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 12 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
8PW7 A respirasome from murine liver Deposited 2023-07-19 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain J 1–64（64 aa）
Chain U 1–64（64 aa）
Not recorded CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 9 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
8UCA Formation of I2+III2 supercomplex rescues respiratory chain defects Deposited 2023-09-26 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 111 PDB declaration: 111-meric
Chain 3J 2–64（63 aa）
Chain 3U 2–64（63 aa）
Not recorded MG MAGNESIUM ION × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 2 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 2 ZN ZINC ION × 2 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 4 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FMN FLAVIN MONONUCLEOTIDE × 2 SF4 IRON/SULFUR CLUSTER × 12 FES FE2/S2 (INORGANIC) CLUSTER × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å

17 other PDB entries and 17 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name QCR9_MOUSE
Isoform —
PDB entities 9
Chains and sequence ranges Author chain J； PDBConstruct 1–63； UniProt 2–64 Author chain U； PDBConstruct 1–63； UniProt 2–64

Cytochrome b-c1 complex subunit 10

OrganismNot specified

UniProt Q9CPX8

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein heterocomplex Heteromer Protein × 21 PDB declaration: 21-meric（21） Consistent with protein copy count Chain K； UniProt 1–56 Chain V； UniProt 1–56 Not recorded Cytochrome b-c1 complex subunit 1, mitochondrial × 2 （Q9CZ13） Cytochrome b-c1 complex subunit 2, mitochondrial × 2 （Q9DB77） Cytochrome b × 2 （P00158） Cytochrome c1, heme protein, mitochondrial × 2 （Q9D0M3） Cytochrome b-c1 complex subunit Rieske, mitochondrial × 2 （Q9CR68） Cytochrome b-c1 complex subunit 7 × 2 （Q9CQB4） Cytochrome b-c1 complex subunit 8 × 2 （Q9CQ69） Cytochrome b-c1 complex subunit 6, mitochondrial × 2 （P99028） Cytochrome b-c1 complex subunit 9 × 2 （Q8R1I1） Cytochrome b-c1 complex subunit 9 × 1 （Q9CR68） 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 8 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 ELECTRON MICROSCOPY cryo-EM buffer：pH 7.7；CHAPS was added only upon freezing cryo-EM vitrification conditions：Cryogen ETHANE Resolution 2.60 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB Difference from Current Entry 7O3H Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
7O37 Murine supercomplex CIII2CIV in the assembled locked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain K 1–56（56 aa）
Chain V 1–56（56 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 16 CDL CARDIOLIPIN × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 TGL TRISTEAROYLGLYCEROL × 1 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
7O3C Murine supercomplex CIII2CIV in the mature unlocked conformation Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric
Chain K 1–56（56 aa）
Chain V 1–56（56 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 15 CDL CARDIOLIPIN × 7 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 1 TGL TRISTEAROYLGLYCEROL × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7；CHAPS was added only upon freezing
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AK 1–56（56 aa）
Chain Ak 1–56（56 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 CDL CARDIOLIPIN × 12 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IAR Respiratory complex CIII2, focus-refined of type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AK 1–56（56 aa）
Chain Ak 1–56（56 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 6 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 5 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AK 1–56（56 aa）
Chain Ak 1–56（56 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IB7 Respiratory complex CIII2, focus-refined of type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AK 1–56（56 aa）
Chain Ak 1–56（56 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 5 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 CDL CARDIOLIPIN × 4 HEC HEME C × 2 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8IB9 Respiratory complex CI:CIII2, type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AK 1–56（56 aa）
Chain Ak 1–56（56 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 18 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 8 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.30 Å
8IBC Respiratory complex CIII2, focus-refined of type IB, Wild type mouse under cold temperature Deposited 2023-02-10 Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AK 1–56（56 aa）
Chain Ak 1–56（56 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 2 U10 UBIQUINONE-10 × 2 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8IBD Respiratory complex CI:CIII2, type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 67 PDB declaration: 67-meric
Chain AK 1–56（56 aa）
Chain Ak 1–56（56 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 20 SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 6 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8IBG Respiratory complex CIII2, focus-refined of type II, Wild type mouse under cold temperature Deposited 2023-02-10 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 22 PDB declaration: 22-meric
Chain AK 1–56（56 aa）
Chain Ak 1–56（56 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 3PH 1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE × 1 CDL CARDIOLIPIN × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
8IC2 Respiratory complex CI:CIII2, type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 66 PDB declaration: 66-meric
Chain AK 1–56（56 aa）
Chain Ak 1–56（56 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 UQ1 UBIQUINONE-1 × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 14 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 UQ9 Ubiquinone-9 × 1 CDL CARDIOLIPIN × 9 ZN ZINC ION × 2 ADP ADENOSINE-5'-DIPHOSPHATE × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 2 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 6.30 Å
8IC5 Respiratory complex CIII2, focus-refined of type I, PERK -/- mouse under cold temperature Deposited 2023-02-10 Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain AK 1–56（56 aa）
Chain Ak 1–56（56 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 UQ6 5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL × 2 HEC HEME C × 2 CDL CARDIOLIPIN × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 U10 UBIQUINONE-10 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8PW5 CS respirasome from murine liver Deposited 2023-07-19 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 92 PDB declaration: 92-meric
Chain K 1–56（56 aa）
Chain V 1–56（56 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 41 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 13 CDL CARDIOLIPIN × 18 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 CU COPPER (II) ION × 2 NA SODIUM ION × 2 HEA HEME-A × 4 MG MAGNESIUM ION × 3 CUA DINUCLEAR COPPER ION × 2 ZN ZINC ION × 3 TGL TRISTEAROYLGLYCEROL × 2 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8PW6 C respirasome from murine liver Deposited 2023-07-19 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain K 1–56（56 aa）
Chain V 1–56（56 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 12 CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
8PW7 A respirasome from murine liver Deposited 2023-07-19 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 79 PDB declaration: 79-meric
Chain K 1–56（56 aa）
Chain V 1–56（56 aa）
Not recorded CU COPPER (II) ION × 1 NA SODIUM ION × 1 HEA HEME-A × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 33 MG MAGNESIUM ION × 2 CUA DINUCLEAR COPPER ION × 1 ZN ZINC ION × 2 TGL TRISTEAROYLGLYCEROL × 1 CDL CARDIOLIPIN × 16 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 4 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 9 SF4 IRON/SULFUR CLUSTER × 6 FMN FLAVIN MONONUCLEOTIDE × 1 K POTASSIUM ION × 1 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZMP S-[2-({N-[(2S)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy)butanoyl]-beta-alanyl}amino)ethyl] tetradecanethioate × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
8UCA Formation of I2+III2 supercomplex rescues respiratory chain defects Deposited 2023-09-26 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 111 PDB declaration: 111-meric
Chain 3K 1–56（56 aa）
Chain 3V 1–56（56 aa）
Not recorded MG MAGNESIUM ION × 2 DGT 2'-DEOXYGUANOSINE-5'-TRIPHOSPHATE × 2 NDP NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 2 ZN ZINC ION × 2 EHZ ~{S}-[2-[3-[[(2~{R})-3,3-dimethyl-2-oxidanyl-4-phosphonooxy-butanoyl]amino]propanoylamino]ethyl] (3~{S})-3-oxidanyltetradecanethioate × 4 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FMN FLAVIN MONONUCLEOTIDE × 2 SF4 IRON/SULFUR CLUSTER × 12 FES FE2/S2 (INORGANIC) CLUSTER × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å

16 other PDB entries and 16 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name QCR10_MOUSE
Isoform —
PDB entities 10
Chains and sequence ranges Author chain K； PDBConstruct 1–56； UniProt 1–56 Author chain V； PDBConstruct 1–56； UniProt 1–56

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 7o3h

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7o3h
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7o3h
Deposition date deposition_date2021-04-01
Structure title titleMurine CIII2 focus-refined from supercomplex CICIII2
Keywords keywordsmitochondria, respiratory chain, supercomplex, OXIDOREDUCTASE, complex III, complex IV, MEMBRANE PROTEIN; MEMBRANE PROTEIN
Experimental Method methodELECTRON MICROSCOPY
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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier55.00 Å
Radius of gyration Rg (electron density) rg_electron54.12 Å
Forward intensity I(0) i03120270000.00
Molecular weight molecular_weight478900.0 kDa
Excluded volume excluded_volume603120 ų
Envelope volume envelope_volume847890 ų
Hydration-shell volume shell_volume126450 ų
Envelope diameter envelope_diameter175.9 Å
Shell Rg shell_rg59.92 Å
Envelope Rg envelope_rg53.12 Å
Shape Rg shape_rg54.12 Å
Total Rg total_rg54.28 Å
Total atoms total_atoms33700
Residues n_residues4161
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 Å−1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3
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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax177.4 Å
Rg (real space) rg_real54.87 Å
Rg uncertainty (real space) rg_real_error1.17 Å
I(0) (real space) i0_real3.1200e+09
I(0) uncertainty (real space) i0_real_error5.9310e+07
Rg (reciprocal space) rg_reciprocal55.10 Å
I(0) (reciprocal space) i0_reciprocal3121000000.0000
Solution quality estimate total_estimate0.8800
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary67.3 Å
Skewness Skewness skewness0.236
Kurtosis Kurtosis kurtosis-0.538
Angular range angular_range— – 0.1450 Å−1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha366100000.0000
Real-space data points n_real_points30
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.907; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.982; Smooth: 0.734
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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (17)

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7. Fold Classification (SCOP + CATH) 6 domains

CATH v4.4 (6 domains)

Domain ID domain_id7o3hA01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology830 — Cytochrome Bc1 Complex; Chain A, domain 1
Homologous superfamily homologous superfamily10 — Metalloenzyme, LuxS/M16 peptidase-like
Domain ID domain_id7o3hA02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology830 — Cytochrome Bc1 Complex; Chain A, domain 1
Homologous superfamily homologous superfamily10 — Metalloenzyme, LuxS/M16 peptidase-like
Domain ID domain_id7o3hE01
Class class2 — Mainly Beta
Architecture architecture102 — 3-layer Sandwich
Topology topology10 — Rieske Iron-sulfur Protein
Homologous superfamily homologous superfamily10 — Rieske [2Fe-2S] iron-sulphur domain
Domain ID domain_id7o3hL01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology830 — Cytochrome Bc1 Complex; Chain A, domain 1
Homologous superfamily homologous superfamily10 — Metalloenzyme, LuxS/M16 peptidase-like
Domain ID domain_id7o3hL02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology830 — Cytochrome Bc1 Complex; Chain A, domain 1
Homologous superfamily homologous superfamily10 — Metalloenzyme, LuxS/M16 peptidase-like
Domain ID domain_id7o3hP01
Class class2 — Mainly Beta
Architecture architecture102 — 3-layer Sandwich
Topology topology10 — Rieske Iron-sulfur Protein
Homologous superfamily homologous superfamily10 — Rieske [2Fe-2S] iron-sulphur domain
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8. Citations (1)

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9. Files and Curves (10)