Journal
FEBS LETTERS
Volume 545, Issue 1, Pages 52-60Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0014-5793(03)00393-4
Keywords
cytochrome c oxidase; electron transfer; photosynthetic reaction center; proton transfer; quinol : fumarate reductase
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Electrostatic interactions play a key role in the coupling of electron and proton transfer in membrane protein complexes during the conversion of the energy stored in sunlight or reduced substrates into biochemical energy via a transmembrane electrochemical proton potential. Principles of charge stabilization within membrane proteins are reviewed and discussed for photosynthetic reaction centers, cytochrome c oxidases, and diheme-containing quinol:fumarate reductases. The impact of V ray structure-based electrostatic calculations on the functional interpretation of these structural coordinates, on providing new explanations for experimental observations, and for the design of more focused additional experiments is illustrated by a number of key examples. (C) 2003 Federation of European Biochemical Societies. Published by Elsevier Science B.V. All rights reserved.
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