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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：P0ABJ1 New Search
10PDB entries
12Biological assembly
13chain/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
1CYW QUINOL OXIDASE (PERIPLASMIC FRAGMENT OF SUBUNIT II) (CYOA) Deposited 1995-08-22 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 111–315（205 aa） Fragment：PERIPLASMIC FRAGMENT (RESIDUES 111 - 315)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.50 Å R-free 0.326
1CYW QUINOL OXIDASE (PERIPLASMIC FRAGMENT OF SUBUNIT II) (CYOA) Deposited 1995-08-22 Assembly 2 Protein homooligomer Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 111–315（205 aa） Fragment：PERIPLASMIC FRAGMENT (RESIDUES 111 - 315)
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION mmCIF provides none of the parsed conditions Resolution 2.50 Å R-free 0.326
1CYX QUINOL OXIDASE (PERIPLASMIC FRAGMENT OF SUBUNIT II WITH ENGINEERED CU-A BINDING SITE)(CYOA) Deposited 1995-08-22 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 111–315（205 aa） Fragment：PERIPLASMIC FRAGMENT (RESIDUES 111 - 315)
Mutation：N172H, S207C, S209E, Y210I, S211C, F215H CUA DINUCLEAR COPPER ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 4.5；pH 4.5
Resolution 2.30 Å R-free 0.316
1FFT The structure of ubiquinol oxidase from Escherichia coli Deposited 2000-07-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 1–315（315 aa）
Not recorded CU COPPER (II) ION × 1 HEM PROTOPORPHYRIN IX CONTAINING FE × 1 HEO HEME O × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；277 K；9-10% PEG 1500, 100 mM NaCl, 100 mM MgCl2, 5% ethanol & 100 mM HEPES , pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 4K
Resolution 3.50 Å
1FFT The structure of ubiquinol oxidase from Escherichia coli Deposited 2000-07-26 Assembly 2 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain G 1–315（315 aa）
Not recorded CU COPPER (II) ION × 1 HEM PROTOPORPHYRIN IX CONTAINING FE × 1 HEO HEME O × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；277 K；9-10% PEG 1500, 100 mM NaCl, 100 mM MgCl2, 5% ethanol & 100 mM HEPES , pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 4K
Resolution 3.50 Å
7CUB 2.55-Angstrom Cryo-EM structure of Cytochrome bo3 from Escherichia coli in Native Membrane Deposited 2020-08-22 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 25–315（291 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 HEO HEME O × 1 CU COPPER (II) ION × 1 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 5 UQ8 Ubiquinone-8 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.55 Å
7CUQ 2.55-Angstrom Cryo-EM structure of Cytochrome bo3 from Escherichia coli in Native Membrane Deposited 2020-08-24 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 25–315（291 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 HEO HEME O × 1 CU COPPER (II) ION × 1 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 5 UQ8 Ubiquinone-8 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.64 Å
7CUW Ubiquinol Binding Site of Cytochrome bo3 from Escherichia coli Deposited 2020-08-25 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 25–315（291 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 HEO HEME O × 1 CU COPPER (II) ION × 1 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 5 UQ8 Ubiquinone-8 × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.63 Å
8F68 E. coli cytochrome bo3 ubiquinol oxidase monomer Deposited 2022-11-16 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 24–283（260 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 HEO HEME O × 1 CU COPPER (II) ION × 1 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.15 Å
8F6C E. coli cytochrome bo3 ubiquinol oxidase dimer Deposited 2022-11-16 Assembly 1 Protein heterocomplex Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain B 24–283（260 aa）
Chain F 24–283（260 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 2 HEO HEME O × 2 CU COPPER (II) ION × 2 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 6 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.46 Å
8GO3 Cryo-EM structure of Escherichia coli cytochrome bo3 in DDM detergent Deposited 2022-08-24 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 1–315（315 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 1 HEO HEME O × 1 CU COPPER (II) ION × 1 UQ8 Ubiquinone-8 × 1 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.09 Å
8QQK Cryo-EM structure of E. coli cytochrome bo3 quinol oxidase assembled in peptidiscs Deposited 2023-10-05 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain B 1–315（315 aa）
Not recorded POV (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate × 3 3PE 1,2-Distearoyl-sn-glycerophosphoethanolamine × 3 HEM PROTOPORPHYRIN IX CONTAINING FE × 1 HEO HEME O × 1 CU COPPER (II) ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8；20mM Tris-HCL, 150mM NaCl, 2% Glycerol, filtered and degassed.
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.80 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.