Peptide sequence: MFPLVKSALN RLQVRSIQQT MARQSHQKRT PDFHDKYGNA VLASGATFCI Sequence homology: Human: 100%; Mouse: 92%; Pig: 77%; Rabbit: 92%; Rat: 92%. Cytochrome c oxidase (COX), the terminal component of the mitochondrial respiratory chain, catalyzes the