Bibliografisk träff 2011-08-03 Conversion of 7-dehydrocholesterol to 7-ketocholesterol is catalyzed by human cytochrome P450 7A1 and occurs by direct oxidation without an epoxide intermediate. Shinkyo R, Xu L, Tallman KA, Cheng Q, Porter NA, Guengerich FP. J Biol Chem · research-article; journal article · DOI 10.1074/jbc.m111.282434