Function and Biology

cytochrome bd-II type oxidase with bound aurachin D

Source organism: Escherichia coli BW25113
Biochemical function: metal ion binding
Biological process: transmembrane transport
Cellular component: plasma membrane

EC 7.1.1.3: Ubiquinol oxidase (H(+)-transporting)

Reaction catalysed:
2 ubiquinol + O(2) + n H(+)(Side 1) = 2 ubiquinone + 2 H(2)O + n H(+)(Side 2)
Systematic name:
Ubiquinol:oxygen oxidoreductase (H(+)-transporting)
Alternative Name(s):
  • Cytochrome bb3 oxidase
  • Cytochrome bo oxidase
  • Cytochrome bo(3) oxidase

Sequence families

Pfam Protein families (Pfam)
PF08173
Domain description: Membrane bound YbgT-like protein
Occurring in:
  1. Putative cytochrome bd-II ubiquinol oxidase subunit AppX
The deposited structure of PDB entry 7ose contains 2 copies of Pfam domain PF08173 (Membrane bound YbgT-like protein) in Putative cytochrome bd-II ubiquinol oxidase subunit AppX. Showing 1 copy in chain C.

PF02322
Domain description: Cytochrome bd terminal oxidase subunit II
Occurring in:
  1. Cytochrome bd-II ubiquinol oxidase subunit 2
The deposited structure of PDB entry 7ose contains 2 copies of Pfam domain PF02322 (Cytochrome bd terminal oxidase subunit II) in Cytochrome bd-II ubiquinol oxidase subunit 2. Showing 1 copy in chain B.

PF01654
Domain description: Cytochrome bd terminal oxidase subunit I
Occurring in:
  1. Cytochrome bd-II ubiquinol oxidase subunit 1
The deposited structure of PDB entry 7ose contains 2 copies of Pfam domain PF01654 (Cytochrome bd terminal oxidase subunit I) in Cytochrome bd-II ubiquinol oxidase subunit 1. Showing 1 copy in chain A.

InterPro InterPro annotations
IPR003317
Domain description: Cytochrome ubiquinol oxidase subunit 2
Occurring in:
  1. Cytochrome bd-II ubiquinol oxidase subunit 2
IPR002585
Domain description: Cytochrome ubiquinol oxidase subunit 1
Occurring in:
  1. Cytochrome bd-II ubiquinol oxidase subunit 1
IPR012994
Domain description: Membrane bound YbgT-like
Occurring in:
  1. Putative cytochrome bd-II ubiquinol oxidase subunit AppX