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Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：P03898 New Search
10PDB entries
10Biological assembly
10chain/assembly records
Main Difference Dimensions in This Set
Different construct Different assembly state Different ligand/ion Different experimental conditions Different structure-quality metrics

Difference tags compare only the current result set; every original PDB and assembly record remains separate.

Related-Structure Differences

Each row represents one biological assembly in one PDB entry; multiple monomers of the same protein are listed separately.

PDB Entry Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Experimental Method Experimental Conditions Structure Quality
5LC5 Structure of mammalian respiratory Complex I, class2 Deposited 2016-06-19 Assembly 1 Protein heterocomplex Heteromer；Protein × 45 PDB declaration: 45-meric（45） Consistent with protein count
Chain A 2–112（111 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 NAP NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE；The specimen was vitrified in an environmental plunge-freeze apparatus, blot for 12-15 seconds after the diameter of the blotted meniscus ceases to spread and plunged.
Resolution 4.35 Å
5LDW Structure of mammalian respiratory Complex I, class1 Deposited 2016-06-28 Assembly 1 Protein heterocomplex Heteromer；Protein × 45 PDB declaration: 45-meric（45） Consistent with protein count
Chain A 1–115（115 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 NAP NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20 mM TRIS-HCL, 150 mM NaCl, 0.03% CYMAL-7
cryo-EM vitrification conditions Cryogen ETHANE；The specimen was vitrified in an environmental plunge-freeze apparatus present in a cold room, blot for 12-15 seconds after the diameter of the blotted meniscus ceases to spread and plunged.
Resolution 4.27 Å
5LDX Structure of mammalian respiratory Complex I, class3. Deposited 2016-06-28 Assembly 1 Protein heterocomplex Heteromer；Protein × 45 PDB declaration: 45-meric（45） Consistent with protein count
Chain A 1–115（115 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 NAP NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer 20 mM TRIS-HCL, 150 mM NaCl, 0.03% CYMAL-7；pH 8
cryo-EM vitrification conditions Cryogen ETHANE；The specimen was vitrified in an environmental plunge-freeze apparatus, blot for 12-15 seconds after the diameter of the blotted meniscus ceases to spread and plunged.
Resolution 5.60 Å
5O31 Mitochondrial complex I in the deactive state Deposited 2017-05-23 Assembly 1 Protein heterocomplex Heteromer；Protein × 45 PDB declaration: 45-meric（45） Consistent with protein count
Chain A 1–115（115 aa）
Not recorded SF4 IRON/SULFUR CLUSTER × 6 FES FE2/S2 (INORGANIC) CLUSTER × 2 FMN FLAVIN MONONUCLEOTIDE × 1 NAP NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.55
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.13 Å
7DGQ Activity optimized supercomplex state1 Deposited 2020-11-12 Assembly 1 Protein heterocomplex Heteromer；Protein × 80 PDB declaration: 80-meric（80） Consistent with protein count
Chain 3 1–115（115 aa）
Not recorded PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 5 FES FE2/S2 (INORGANIC) CLUSTER × 3 CDL CARDIOLIPIN × 3 FMN FLAVIN MONONUCLEOTIDE × 1 SF4 IRON/SULFUR CLUSTER × 6 CU COPPER (II) ION × 3 HEA HEME-A × 2 MG MAGNESIUM ION × 1 ZN ZINC ION × 2 NAP NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 UQ2 UBIQUINONE-2 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 5.00 Å
7DGR Activity optimized supercomplex state2 Deposited 2020-11-12 Assembly 1 Protein heterocomplex Heteromer；Protein × 80 PDB declaration: 80-meric（80） Consistent with protein count
Chain 3 1–115（115 aa）
Not recorded FES FE2/S2 (INORGANIC) CLUSTER × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 4 CDL CARDIOLIPIN × 3 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 FMN FLAVIN MONONUCLEOTIDE × 1 SF4 IRON/SULFUR CLUSTER × 6 ZN ZINC ION × 2 NAP NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 HEA HEME-A × 2 CU COPPER (II) ION × 3 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.60 Å
7DGS Activity optimized supercomplex state3 Deposited 2020-11-12 Assembly 1 Protein heterocomplex Heteromer；Protein × 80 PDB declaration: 80-meric（80） Consistent with protein count
Chain 3 1–115（115 aa）
Not recorded FES FE2/S2 (INORGANIC) CLUSTER × 3 CDL CARDIOLIPIN × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 5 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 5 FMN FLAVIN MONONUCLEOTIDE × 1 SF4 IRON/SULFUR CLUSTER × 6 ZN ZINC ION × 2 NAP NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 HEA HEME-A × 2 CU COPPER (II) ION × 3 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 7.80 Å
7DGZ Activity optimized complex I (closed form) Deposited 2020-11-12 Assembly 1 Protein heterocomplex Heteromer；Protein × 45 PDB declaration: 45-meric（45） Consistent with protein count
Chain 3 1–115（115 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 4 CDL CARDIOLIPIN × 2 FMN FLAVIN MONONUCLEOTIDE × 1 SF4 IRON/SULFUR CLUSTER × 6 FES FE2/S2 (INORGANIC) CLUSTER × 2 ZN ZINC ION × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 4 NAP NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.80 Å
7DH0 Activity optimized complex I (open form) Deposited 2020-11-12 Assembly 1 Protein heterocomplex Heteromer；Protein × 45 PDB declaration: 45-meric（45） Consistent with protein count
Chain 3 1–115（115 aa）
Not recorded 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 CDL CARDIOLIPIN × 1 FMN FLAVIN MONONUCLEOTIDE × 1 SF4 IRON/SULFUR CLUSTER × 6 FES FE2/S2 (INORGANIC) CLUSTER × 2 ZN ZINC ION × 1 NAP NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
7DKF Activity optimized supercomplex state4 Deposited 2020-11-24 Assembly 1 Protein heterocomplex Heteromer；Protein × 80 PDB declaration: 80-meric（80） Consistent with protein count
Chain 32 1–115（115 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 2 FES FE2/S2 (INORGANIC) CLUSTER × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 CDL CARDIOLIPIN × 1 FMN FLAVIN MONONUCLEOTIDE × 1 SF4 IRON/SULFUR CLUSTER × 6 ZN ZINC ION × 2 NAP NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 HEA HEME-A × 2 CU COPPER (II) ION × 3 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 8.30 Å

This page presents structural evidence recorded in PDB/mmCIF.“No recorded non-water small molecule” does not prove that the experimental sample was ligand-free; experimental conditions belong to the PDB experiment, while ligands and copy counts are shown for each biological assembly.