PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 21094255-4 2011 Evidence is presented to show that in the case of CYP17 the attack of Fe(III)-O-O(-) on the target carbon is promoted by cytochrome b(5), which acts as a conformational regulator of CYP17. fe(iii)-o-o 70-81 mitochondrially encoded cytochrome b Homo sapiens 121-133