The presence of multiple cytochrome b proteins in succinate-cytochrome c reductase.
D000596:Amino Acids / Q000032:analysis; D000818:Animals; D002417:Cattle; D003580:Cytochromes / Q000032:analysis*; D004591:Electrophoresis, Polyacrylamide Gel; D046911:Macromolecular Substances; D008931:Mitochondria, Muscle / Q000201:enzymology; D008970:Molecular Weight; D009206:Myocardium / Q000201:enzymology; D010088:Oxidoreductases / Q000032:analysis*; D013053:Spectrophotometry; D013056:Spectrophotometry, Ultraviolet; D013384:Succinate Cytochrome c Oxidoreductase / Q000032:analysis*
D000596:Amino Acids; D003580:Cytochromes; D046911:Macromolecular Substances; D010088:Oxidoreductases; D013384:Succinate Cytochrome c Oxidoreductase