PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 21164259-1 2011 Mitochondrial cytochrome P450 side-chain cleavage enzyme (P450scc) converts cholesterol to pregnenolone and is the initiating enzyme for steroidogenesis. Pregnenolone 91-103 cytochrome P450 family 11 subfamily A member 1 Homo sapiens 58-65