CYP2A6

Official Full Name

cytochrome P450, family 2, subfamily A, polypeptide 6

Background

This gene, CYP2A6, 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. This protein localizes to the endoplasmic reticulum and its expression is induced by phenobarbital. The enzyme is known to hydroxylate coumarin, and also metabolizes nicotine, aflatoxin B1, nitrosamines, and some pharmaceuticals. Individuals with certain allelic variants are said to have a poor metabolizer phenotype, meaning they do not efficiently metabolize coumarin or nicotine. This gene is part of a large cluster of cytochrome P450 genes from the CYP2A, CYP2B and CYP2F subfamilies on chromosome 19q. The gene was formerly referred to as CYP2A3; however, it has been renamed CYP2A6.

Synonyms

CYP2A6; cytochrome P450, family 2, subfamily A, polypeptide 6; CYP2A3, cytochrome P450, subfamily IIA (phenobarbital inducible), polypeptide 6; cytochrome P450 2A6; CPA6; CYP2A; Coumarin 7 hydroxylase; CYP2A3; Coumarin 7-hydroxylase; CP2A6_HUMAN; CYPIIA6; Cytochrome P450 IIA3; Cytochrome P450 subfamily IIA (phenobarbital inducible) polypeptide 6; Cytochrome P450(I); Cytochrome P450, family 2 subfamily A polypeptide 6; Flavoprotein linked monooxygenase; P450C2A; P450PB; Xenobiotic monooxygenase; flavoprotein-linked monooxygenase; cytochrome P450, subfamily IIA (phenobarbital-inducible), polypeptide 6