PMID: 36140Apr 11, 1979

Factors controlling the binding of two protons per electron transferred through the ubiquinone and cytochrome b/c2 segment of Rhodopseudomonas sphaeroides chromatophores

Biochimica Et Biophysica Acta
K M PettyP L Dutton


1. On every turnover, 2.0 protons can be bound by the membrane for each single electron moving through the Q-b/c2 oxidoreductase. 2. One proton (H+II) binding reaction is, and one (H+I) is not, sensitive to antimycin. 3. The redox states of electron transfer components other than the proton binding agents can affect both the rate of proton uptake and the apparent pK values on the agents binding the protons. 4. The presence of valinomycin under certain well-defined conditions can strongly influence the value of the measured pK on the H+II binding agent.


Aug 1, 1983·Journal of Bioenergetics and Biomembranes·A V Oleskin, V D Samuilov
Jul 1, 1993·Photosynthesis Research·Péter Maróti
Apr 10, 2007·Proceedings of the National Academy of Sciences of the United States of America·M F RichterJürgen Köhler
Oct 15, 1982·Biochemical and Biophysical Research Communications·L Yu, C A Yu
Feb 24, 2011·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Sarah UnterkoflerJürgen Köhler
Jan 4, 2007·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Armen Y Mulkidjanian


Oct 21, 1976·Journal of Theoretical Biology·P Mitchell
Apr 11, 1979·Biochimica Et Biophysica Acta·K I Takamiya, P L Dutton
Nov 8, 1979·Biochimica Et Biophysica Acta·J M PachenceJ K Blasie
Mar 3, 1979·British Medical Journal·T van den Berg
Feb 1, 1976·Proceedings of the National Academy of Sciences of the United States of America·M D BrandA L Lehninger
Oct 31, 1974·Biochimica Et Biophysica Acta·P L Dutton, D F Wilson

Related Concepts

Ubiquinone (Lab Procedure)
Electron Transport
Bacterial Chromatophore
Cytochrome B Activity
Cytochrome c Group
Rhodobacter sphaeroides

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