PDBe 1m57

X-ray diffraction
3Å resolution

Structure of cytochrome c oxidase from Rhodobacter sphaeroides (EQ(I-286) mutant))

Released:

Function and Biology Details

Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
Entry contents:
4 distinct polypeptide molecules
Macromolecules (4 distinct):
Cytochrome c oxidase subunit 1 Chains: A, G
Molecule details ›
Chains: A, G
Length: 566 amino acids
Theoretical weight: 63.19 KDa
Source organism: Rhodobacter sphaeroides
Expression system: Rhodobacter sphaeroides
UniProt:
  • Best match: P33517 (Residues: 1-566)
Gene name: ctaD
Cytochrome c oxidase subunit 2 Chains: B, H
Molecule details ›
Chains: B, H
Length: 264 amino acids
Theoretical weight: 29.39 KDa
Source organism: Rhodobacter sphaeroides
Expression system: Rhodobacter sphaeroides
UniProt:
  • Best match: Q03736 (Residues: 26-289)
Gene names: coxII, ctaB, ctaC
Cytochrome c oxidase polypeptide III (Cytochrome AA3 subunit 3) Chains: C, I
Molecule details ›
Chains: C, I
Length: 266 amino acids
Theoretical weight: 30.2 KDa
Source organism: Rhodobacter sphaeroides
Expression system: Rhodobacter sphaeroides
UniProt:
  • Best match: P84153 (Residues: 1-266)
Aa3-type cytochrome c oxidase subunit IV Chains: D, J
Molecule details ›
Chains: D, J
Length: 51 amino acids
Theoretical weight: 5.41 KDa
Source organism: Rhodobacter sphaeroides
Expression system: Rhodobacter sphaeroides
UniProt:
  • Best match: Q8KRK5 (Residues: 11-61)
Gene name: coxIV

Ligands and Environments


No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID14-4
Spacegroup: R3
Unit cell:
a: 340.72Å b: 340.72Å c: 89.76Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.293 0.293 0.329
Expression system: Rhodobacter sphaeroides