Enzyme of the respiratory chain encoded by a mitochondrial gene
Cytochrome c oxidase II is a protein in eukaryotes that is encoded by the MT-CO2 gene.[5] Cytochrome c oxidase subunit II, abbreviated COXII, COX2, COII, or MT-CO2, is the second subunit of cytochrome c oxidase. It is also one of the three mitochondrial DNA (mtDNA) encoded subunits (MT-CO1, MT-CO2, MT-CO3) of respiratory complex IV.