Cytochrome c
Cytochrome c oxidase subunit 6A1, mitochondrial is a protein that in humans is encoded by the "COX6A1" gene. Cytochrome c oxidase 6A1 is a subunit of the cytochrome "c" oxidase complex, also known as Complex IV, the last enzyme in the mitochondrial electron transport chain. A mutation of the COX6A1 gene is associated with a recessive axonal or mixed form of Charcot-Marie-Tooth disease.