Tags: Protein.
Cytochrome P450 17A1 or steroid 17-alpha-monooxygenase or 17α-hydroxylase/1720 lyase/1720 desmolase is an enzyme that in humans is encoded by the CYP17A1 gene. It is found in the zona reticularis of the adrenal cortex. This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases that catalyze many reactions involved in drug metabolism and synthesis of cholesterol steroids and other lipids.