TCDB is operated by the Saier Lab Bioinformatics Group

3 component system: The Proton-translocating Cytochrome Oxidase (COX) Superfamily

P00396 Cox1 aka MTCO1 aka COI
P00415 COX3 aka MTCO3 aka COIII
P68530 Cox2 aka MTCO2 aka COII