UniProt functional annotation for Q3J5G0

UniProt code: Q3J5G0.

Organism: Rhodobacter sphaeroides (strain ATCC 17023 / 2.4.1 / NCIB 8253 / DSM 158).
Taxonomy: Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales; Rhodobacteraceae; Rhodobacter.
Function: Subunits I and II form the functional core of the enzyme complex. Electrons originating in cytochrome c are transferred via heme a and Cu(A) to the binuclear center formed by heme a3 and Cu(B) (By similarity).
Catalytic activity: 4 ferrocytochrome c + O(2) + 4 H(+) = 4 ferricytochrome c + 2 H(2)O.
Cofactor: Copper A (By similarity).
Subcellular location: Membrane; Multi-pass membrane protein (By similarity).
Similarity: Belongs to the cytochrome c oxidase subunit 2 family.

Annotations taken from UniProtKB at the EBI.