Enables several functions, including caffeine oxidase activity; heme binding activity; and steroid hydroxylase activity. Involved in several processes, including oxidative demethylation; steroid metabolic process; and terpenoid metabolic process. Located in intracellular membrane-bounded organelle. Implicated in breast cancer; chronic obstructive pulmonary disease; endometrial cancer; and porphyria cutanea tarda.
RGD Description
This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. The protein encoded by this gene localizes to the endoplasmic reticulum and its expression is induced by some polycyclic aromatic hydrocarbons (PAHs), some of which are found in cigarette smoke. The enzyme's endogenous substrate is unknown; however, it is able to metabolize some PAHs to carcinogenic intermediates. Other xenobiotic substrates for this enzyme include caffeine, aflatoxin B1, and acetaminophen. The transcript from this gene contains four Alu sequences flanked by direct repeats in the 3' untranslated region. [provided by RefSeq, Jul 2008]