PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15912551-4 2005 The results indicated that the haem of C357M cytochrome P450cam is possibly axially coordinated to a methionine and a histidine, analogously to cytochrome c. Histidine 118-127 cytochrome c, somatic Equus caballus 144-156