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Protonation states of the catalytic intermediates of cytochrome c oxidase.

Mitchell, R; Mitchell, P; Rich, PR; (1992) Protonation states of the catalytic intermediates of cytochrome c oxidase. Biochim Biophys Acta , 1101 (2) pp. 188-191.

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Abstract

Protonation changes accompanying conversion of oxidised (O state) cytochrome c oxidase to the 2-electron-reduced P state, and 3-electron-reduced F state at pH 8.0 have been measured. It was found that 2 and 3 protons, respectively, were taken up. The fourth proton required for the reduction of O2 to H2O must therefore be consumed in the remaining F----O portion of the catalytic cycle.

Type: Article
Title: Protonation states of the catalytic intermediates of cytochrome c oxidase.
Location: Netherlands
Keywords: Animals, Catalysis, Cattle, Electron Transport Complex IV, Hydrogen-Ion Concentration, Protons
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Structural and Molecular Biology
URI: http://discovery.ucl.ac.uk/id/eprint/10027170
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