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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：P98002 New Search
8PDB entries
8Biological assembly
8chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion Different experimental method 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
1AR1 Structure at 2.7 Angstrom Resolution of the Paracoccus Denitrificans two-subunit Cytochrome C Oxidase Complexed with an Antibody Fv Fragment Deposited 1997-08-08 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–558（558 aa）
Not recorded CU COPPER (II) ION × 3 MG MAGNESIUM ION × 1 CA CALCIUM ION × 1 HEA HEME-A × 2 LDA LAURYL DIMETHYLAMINE-N-OXIDE × 9 X-RAY DIFFRACTION
X-ray crystallization conditions pH 5.5；pH 5.5
Resolution 2.70 Å R-free 0.261
1QLE CRYO-STRUCTURE OF THE PARACOCCUS DENITRIFICANS FOUR-SUBUNIT CYTOCHROME C OXIDASE IN THE COMPLETELY OXIDIZED STATE COMPLEXED WITH AN ANTIBODY FV FRAGMENT Deposited 1999-08-30 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 17–554（538 aa）
Not recorded HEA HEME-A × 2 CU COPPER (II) ION × 1 CA CALCIUM ION × 1 MN MANGANESE (II) ION × 1 CUA DINUCLEAR COPPER ION × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 X-RAY DIFFRACTION
X-ray crystallization conditions pH 8；pH 8.00
Resolution 3.00 Å R-free 0.309
3EHB A D-Pathway Mutation Decouples the Paracoccus Denitrificans Cytochrome c Oxidase by Altering the side chain orientation of a distant, conserved Glutamate Deposited 2008-09-12 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–558（558 aa） Fragment：UNP residues 17-545
Mutation：N131D HEA HEME-A × 2 CU COPPER (II) ION × 3 MG MAGNESIUM ION × 1 CA CALCIUM ION × 1 LDA LAURYL DIMETHYLAMINE-N-OXIDE × 9 LMT DODECYL-BETA-D-MALTOSIDE × 12 PER PEROXIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.3；291 K；MPEG 2000 is contained in the crystallization buffer pH 5.5, pH 7.3, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Resolution 2.32 Å R-free 0.242
3HB3 High resolution crystal structure of Paracoccus denitrificans cytochrome c oxidase Deposited 2009-05-04 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–558（558 aa）
Not recorded HEA HEME-A × 2 CU1 COPPER (I) ION × 3 MN MANGANESE (II) ION × 1 CA CALCIUM ION × 1 LDA LAURYL DIMETHYLAMINE-N-OXIDE × 10 LMT DODECYL-BETA-D-MALTOSIDE × 14 PEO HYDROGEN PEROXIDE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；pH 5.5；277 K；25% glycerol, pH 5.5, VAPOR DIFFUSION, temperature 277K
Resolution 2.25 Å R-free 0.280
7ATE Cytochrome c oxidase structure in P-state Deposited 2020-10-30 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–558（558 aa）
Not recorded MN MANGANESE (II) ION × 1 HEA HEME-A × 2 CU COPPER (II) ION × 1 CA CALCIUM ION × 1 PEO HYDROGEN PEROXIDE × 1 CUA DINUCLEAR COPPER ION × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 1 PGV (1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL (11E)-OCTADEC-11-ENOATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE；4 second before plunging
Resolution 2.40 Å
7ATN Cytochrome c oxidase structure in R-state Deposited 2020-10-30 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–558（558 aa）
Not recorded MN MANGANESE (II) ION × 1 HEA HEME-A × 2 CU COPPER (II) ION × 1 CA CALCIUM ION × 1 CUA DINUCLEAR COPPER ION × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE；4 seconds before plunging
Resolution 2.66 Å
7AU3 Cytochrome c oxidase structure in F-state Deposited 2020-11-02 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–558（558 aa）
Not recorded MN MANGANESE (II) ION × 1 HEA HEME-A × 2 CU COPPER (II) ION × 1 CA CALCIUM ION × 1 O OXYGEN ATOM × 1 2FK SUPEROXO ION × 1 CUA DINUCLEAR COPPER ION × 1 PGV (1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL (11E)-OCTADEC-11-ENOATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE；4 seconds before plunging
Resolution 2.56 Å
7AU6 Cytochrome c oxidase structure in O-state Deposited 2020-11-02 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–558（558 aa）
Not recorded HEA HEME-A × 2 CU COPPER (II) ION × 1 CA CALCIUM ION × 1 OXY OXYGEN MOLECULE × 6 PEO HYDROGEN PEROXIDE × 1 MN MANGANESE (II) ION × 1 CUA DINUCLEAR COPPER ION × 1 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE；4 seconds before plunging
Resolution 2.40 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.