title: Proton pump coupled to cytochrome c oxidase in the cyanobacterium Anacystis nidulans.
abstract: Intact spheroplasts of the cyanobacterium Anacystis nidulans were found to oxidize various exogenous c-type cytochromes with concomitant proton extrusion. In the coupled state, H+/e stoichiometries close to 1 were measured, regardless of absolute reaction rates. It is concluded that the proton translocation observed is an intrinsic property of the cytoplasmic membrane-bound cytochrome c oxidase of A. nidulans.
mesh_terms: D002462:Cell Membrane / Q000201:enzymology; D000458:Cyanobacteria / Q000201:enzymology*; D003574:Cytochrome c Group / Q000378:metabolism; D003576:Electron Transport Complex IV / Q000378:metabolism*; D006859:Hydrogen / Q000378:metabolism*; D007473:Ion Channels / Q000378:metabolism*; D010101:Oxygen Consumption; D011522:Protons
chemical_list: D003574:Cytochrome c Group; D007473:Ion Channels; D011522:Protons; D006859:Hydrogen; D003576:Electron Transport Complex IV