PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 27966929-6 2017 We studied the structure of human estrogen metabolizing enzymes (CYP1A1, CYP1A2, CYP1B1, and CYP3A4) in complex with estrone using docking and investigated the susceptibility of estrone, equilin, and equilenin (which only differ in the unsaturation of ring B) to undergo 2- and 4-hydroxylation using several models of CYP enzymes (Compound I, methoxy, and phenoxy radical). phenoxy radical 356-371 cytochrome P450 family 1 subfamily A member 2 Homo sapiens 73-79