Cytochrome C Oxidase Subunit 1

**Semantic type:** Amino Acid, Peptide, or Protein|Enzyme

**Definition:** Cytochrome c oxidase subunit 1 (513 aa, ~57 kDa) is encoded by the human MT-CO1 gene. This protein plays a role in the final step of oxidative phosphorylation in the mitochondrion.

**Synonyms:** - COX Complex IV Subunit I - COX1 - Cytochrome C Oxidase I - Cytochrome C Oxidase Polypeptide I - Cytochrome C Oxidase Subunit I - EC 1.9.3.1, Formerly - EC 7.1.1.9 - MT-CO1