Synonyms : Bacterial Electron Transport Complex IV, Cytochrome Oxidase Subunit III, Cytochrome a, a3, Cytochrome c Oxidase Subunit VIa, Cytochrome-c Oxidase (Complex IV), Cytochrome-c Oxidase Subunit III, Cytochrome-c Oxidase Subunit IV, Heme aa3 Cytochrome Oxidase