PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15854816-1 2005 Cytochrome P450 (CYP) is a large family of enzymes containing heme as the active site. Heme 62-66 cytochrome P450 family 4 subfamily F member 3 Homo sapiens 0-15 15854816-1 2005 Cytochrome P450 (CYP) is a large family of enzymes containing heme as the active site. Heme 62-66 cytochrome P450 family 4 subfamily F member 3 Homo sapiens 17-20