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8iar

Respiratory complex CIII2, focus-refined of type I, Wild type mouse under thermoneutral temperature

Method: ELECTRON MICROSCOPY Dmax: 176.6 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 × 22 PDB declaration: 22-meric（22） Consistent with protein copy count Chain AA； UniProt 1–480 Chain Aa； UniProt 1–480 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 × 4 （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） 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

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 8IAR 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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
7O3H Murine CIII2 focus-refined from supercomplex CICIII2 Deposited 2021-04-01 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain A 35–480（446 aa）
Chain L 35–480（446 aa）
Not recorded 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
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 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 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 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 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 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 AA； PDBConstruct 1–480； UniProt 1–480 Author chain Aa； PDBConstruct 1–480； UniProt 1–480

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 × 22 PDB declaration: 22-meric（22） Consistent with protein copy count Chain AB； UniProt 1–453 Chain Ab； UniProt 1–453 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 × 4 （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） 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

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 8IAR 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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
7O3H Murine CIII2 focus-refined from supercomplex CICIII2 Deposited 2021-04-01 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain B 15–453（439 aa）
Chain M 15–453（439 aa）
Not recorded 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
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 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 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 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 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 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 AB； PDBConstruct 1–453； UniProt 1–453 Author chain Ab； PDBConstruct 1–453； UniProt 1–453

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 × 22 PDB declaration: 22-meric（22） Consistent with protein copy count Chain AC； UniProt 1–381 Chain Ac； 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 × 4 （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） 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

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 8IAR 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 experimental conditions 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 experimental conditions 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 experimental conditions 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
7O3H Murine CIII2 focus-refined from supercomplex CICIII2 Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain C 1–381（381 aa）
Chain N 1–381（381 aa）
Not recorded 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
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 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 oligomeric state Different ligand/ion 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 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 ligand/ion 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 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 oligomeric state Different ligand/ion 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 AC； PDBConstruct 1–381； UniProt 1–381 Author chain Ac； 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 × 22 PDB declaration: 22-meric（22） Consistent with protein copy count Chain AD； UniProt 1–325 Chain Ad； UniProt 1–325 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 × 4 （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） 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

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 8IAR 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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
7O3H Murine CIII2 focus-refined from supercomplex CICIII2 Deposited 2021-04-01 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain D 85–325（241 aa）
Chain O 85–325（241 aa）
Not recorded 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
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 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 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 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 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 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 AD； PDBConstruct 1–325； UniProt 1–325 Author chain Ad； PDBConstruct 1–325； UniProt 1–325

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 × 22 PDB declaration: 22-meric（22） Consistent with protein copy count Chain AE； UniProt 1–274 Chain AI； UniProt 1–274 Chain Ae； UniProt 1–274 Chain Ai； UniProt 1–274 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 × 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

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 8IAR 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 construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions 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 construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions 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 experimental conditions 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
7O3H Murine CIII2 focus-refined from supercomplex CICIII2 Deposited 2021-04-01 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-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 × 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
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different construct Different mutation/modification Different oligomeric state Different ligand/ion 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 mutation/modification Different oligomeric state Different ligand/ion 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 mutation/modification Different oligomeric state Different ligand/ion 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 mutation/modification Different oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 ligand/ion 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 mutation/modification Different oligomeric state Different ligand/ion 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 mutation/modification Different oligomeric state Different ligand/ion 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 mutation/modification 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 mutation/modification 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 mutation/modification 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 construct Different mutation/modification 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
Chains and sequence ranges Author chain AE； PDBConstruct 1–274； UniProt 1–274 Author chain AI； PDBConstruct 1–274； UniProt 1–274 Author chain Ae； PDBConstruct 1–274； UniProt 1–274 Author chain Ai； PDBConstruct 1–274； UniProt 1–274

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 × 22 PDB declaration: 22-meric（22） Consistent with protein copy count Chain AF； UniProt 1–111 Chain Af； UniProt 1–111 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 × 4 （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） 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

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 8IAR 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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
7O3H Murine CIII2 focus-refined from supercomplex CICIII2 Deposited 2021-04-01 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain F 2–111（110 aa）
Chain Q 2–111（110 aa）
Not recorded 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
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 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 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 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 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 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 AF； PDBConstruct 1–111； UniProt 1–111 Author chain Af； PDBConstruct 1–111； UniProt 1–111

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 × 22 PDB declaration: 22-meric（22） Consistent with protein copy count Chain AG； UniProt 1–82 Chain Ag； UniProt 1–82 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 × 4 （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） 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

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 8IAR 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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
7O3H Murine CIII2 focus-refined from supercomplex CICIII2 Deposited 2021-04-01 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain G 2–82（81 aa）
Chain R 2–82（81 aa）
Not recorded 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
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 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 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 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 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 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 AG； PDBConstruct 1–82； UniProt 1–82 Author chain Ag； PDBConstruct 1–82； UniProt 1–82

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 × 22 PDB declaration: 22-meric（22） Consistent with protein copy count Chain AH； UniProt 1–89 Chain Ah； UniProt 1–89 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 × 4 （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） 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

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 8IAR 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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
7O3H Murine CIII2 focus-refined from supercomplex CICIII2 Deposited 2021-04-01 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain H 14–89（76 aa）
Chain S 14–89（76 aa）
Not recorded 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
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 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 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 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 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 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 AH； PDBConstruct 1–89； UniProt 1–89 Author chain Ah； PDBConstruct 1–89； UniProt 1–89

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 × 22 PDB declaration: 22-meric（22） Consistent with protein copy count Chain AJ； UniProt 1–64 Chain Aj； UniProt 1–64 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 × 4 （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） 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

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 8IAR 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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 construct Different oligomeric state Different ligand/ion Different experimental conditions 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
7O3H Murine CIII2 focus-refined from supercomplex CICIII2 Deposited 2021-04-01 Different construct Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain J 2–64（63 aa）
Chain U 2–64（63 aa）
Not recorded 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
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 ligand/ion 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 oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 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 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 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 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 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 AJ； PDBConstruct 1–64； UniProt 1–64 Author chain Aj； PDBConstruct 1–64； UniProt 1–64

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 × 22 PDB declaration: 22-meric（22） Consistent with protein copy count Chain AK； UniProt 1–56 Chain Ak； 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 × 4 （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） 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

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 8IAR 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 experimental conditions 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 experimental conditions 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
7O3H Murine CIII2 focus-refined from supercomplex CICIII2 Deposited 2021-04-01 Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein heterocomplex Heteromer；Protein × 21 PDB declaration: 21-meric
Chain K 1–56（56 aa）
Chain V 1–56（56 aa）
Not recorded 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
8IAO Respiratory complex CI:CIII2, type I, Wild type mouse under thermoneutral temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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
8IB4 Respiratory complex CI:CIII2, type IA, Wild type mouse under cold temperature Deposited 2023-02-09 Different oligomeric state Different ligand/ion 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 oligomeric state Different ligand/ion 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 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 oligomeric state Different ligand/ion 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 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 ligand/ion 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 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 oligomeric state Different ligand/ion 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 AK； PDBConstruct 1–56； UniProt 1–56 Author chain Ak； 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 8iar

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8iar
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8iar
Deposition date deposition_date2023-02-09
Structure title titleRespiratory complex CIII2, focus-refined of type I, Wild type mouse under thermoneutral temperature
Keywords keywordsRespiratory complex, Respiratory supercomplex, ELECTRON TRANSPORT; ELECTRON TRANSPORT
Experimental Method methodELECTRON MICROSCOPY
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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier54.33 Å
Radius of gyration Rg (electron density) rg_electron53.40 Å
Forward intensity I(0) i02821900000.00
Molecular weight molecular_weight457860.0 kDa
Excluded volume excluded_volume577750 ų
Envelope volume envelope_volume795280 ų
Hydration-shell volume shell_volume121110 ų
Envelope diameter envelope_diameter173.8 Å
Shell Rg shell_rg58.76 Å
Envelope Rg envelope_rg52.15 Å
Shape Rg shape_rg53.39 Å
Total Rg total_rg53.56 Å
Total atoms total_atoms32253
Residues n_residues3976
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 dmax176.6 Å
Rg (real space) rg_real54.19 Å
Rg uncertainty (real space) rg_real_error1.31 Å
I(0) (real space) i0_real2.8220e+09
I(0) uncertainty (real space) i0_real_error5.7730e+07
Rg (reciprocal space) rg_reciprocal54.42 Å
I(0) (reciprocal space) i0_reciprocal2823000000.0000
Solution quality estimate total_estimate0.8855
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary67.0 Å
Skewness Skewness skewness0.224
Kurtosis Kurtosis kurtosis-0.545
Angular range angular_range— – 0.1450 Å−1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha257400000.0000
Real-space data points n_real_points30
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.900; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.981; Smooth: 0.825
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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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8. Citations (1)

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9. Files and Curves (10)