Cytochromes P450 are a group of heme-thiolate monooxygenases. This isozyme seems to be implicated in olfaction. an organic molecule + O2 + reduced [NADPH--hemoprotein reductase] = an alcohol + H(+) + H2O + oxidized [NADPH--hemoprotein reductase] Olfactory epithelium. Belongs to the cytochrome P450 family.