← Back to search

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：Q99KD6 New Search
3PDB entries
3Biological assembly
3chain/assembly records
Main Difference Dimensions in This Set
Different assembly state Different ligand/ion 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
7O37 Murine supercomplex CIII2CIV in the assembled locked conformation Deposited 2021-04-01 Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric（34） Consistent with protein count
Chain I 1–113（113 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 Assembly 1 Protein heterocomplex Heteromer；Protein × 34 PDB declaration: 34-meric（34） Consistent with protein count
Chain I 1–113（113 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 Assembly 1 Protein heterocomplex Heteromer；Protein × 31 PDB declaration: 31-meric（31） Consistent with protein count
Chain I 1–113（113 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

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.