PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 25940823-3 2015 Tamoxifen is bioactivated by cytochrome P450 (CYP) enzymes such as CYP2B6, CYP2C9, CYP2C19, CYP2D6 and CYP3A4/5, resulting in the formation of active metabolites, including 4-hydroxy-tamoxifen and endoxifen. 4'-hydroxytamoxifen 173-192 cytochrome P450 family 2 subfamily C member 19 Homo sapiens 83-90