FIGURE 2. Comparison of the deduced amino acid sequences of the CMO2 among ferret, human, and mouse.

Identity is indicated in yellow among three species and in blue between two species. The four conserved histidines (indicated by a single asterisk) and one glutamate (indicated in double asterisks) existed in the ferret CMO2, which has been demonstrated as putative iron-binding residues in all oxygenase family members (10). There CMO family signature sequence is underlined. The nucleotide sequence for the carotene 9′,10′-monooxygenase gene of ferret has been deposited in the GenBankTM with accession number AY527150.