PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 24414690-3 1991 Appreciable extents of cytochrome b-559HP photoreduction were observed at DCMU concentrations which completely abolished the electron transport from water to methyl viologen under the same experimental conditions. Viologens 165-173 mitochondrially encoded cytochrome b Homo sapiens 23-35