PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 33656879-1 2021 CYP17A1 is an essential human steroidogenic enzyme, which catalyzes two sequential reactions leading to the formation of androstenedione from progesterone and dehydroepiandrosterone from pregnenolone. Androstenedione 121-136 cytochrome P450 family 17 subfamily A member 1 Homo sapiens 0-7