PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 24760842-4 2014 Cytochrome P450 side chain cleavage (P450scc) converts cholesterol to pregnenolone, the rate-limiting enzymatic reaction in neurosteroidogenesis. Pregnenolone 70-82 cytochrome P450 family 4 subfamily F member 3 Homo sapiens 0-15