title: Solubilized cytochrome c oxidase from Paracoccus denitrificans is a monomer.
abstract: Cytochrome c oxidase purified from the bacterium Paracoccus denitrificans was analyzed by analytical ultracentrifugation. In the detergent octyltetra/pentaoxyethylene (C8E45), the isolated enzyme exhibits a molecular weight of 79,000 to 84,000. The detergent-solubilized enzyme is thus a monomer which contains one copy of each of the two subunits.
mesh_terms: D003902:Detergents; D003576:Electron Transport Complex IV / Q000302:isolation & purification*; D008970:Molecular Weight; D010231:Paracoccus denitrificans / Q000201:enzymology*; D012995:Solubility
chemical_list: D003902:Detergents; D003576:Electron Transport Complex IV