PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 18108498-13 1949 Cytochrome oxidase and cytochrome b and c (substrate: p-phenylenediamine): 16,800 calories per gram molecule. 4-phenylenediamine 54-72 mitochondrially encoded cytochrome b Homo sapiens 23-35