cytochrome P450 family 2, subfamily W, polypeptide 1
Cytochrome P450 2W1 (CYP2W1) is expressed during development of the gastrointestinal tract, is silenced after birth in the intestine and colon by epigenetic modifications, but is activated following demethylation in colorectal cancer (CRC). Its expression levels in CRC correlate with the degree of malignancy, are higher in metastases and are predictive of survival. Thus, it is an attractive tumor-specific diagnostic and therapeutic target. CYP2W1 belongs to family 2 of the large cytochrome P450 (P450, CYP) superfamily of heme-containing proteins that catalyze a variety of oxidative reactions of a large number of structurally different endogenous and exogenous compounds in organisms from all major domains of life. CYPs bind their diverse ligands in a buried, hydrophobic active site, which is accessed through a substrate access channel formed by two flexible helices and their connecting loop.