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The role of electrostatics in proton-conducting membrane protein complexes Lancaster CRFEBS Lett 2003[Jun]; 545 (1): 52-60Electrostatic 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 X-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.|*Protons[MESH]|Electron Transport[MESH]|Electron Transport Complex IV/chemistry/metabolism[MESH]|Ion Transport[MESH]|Macromolecular Substances[MESH]|Membrane Proteins/*chemistry/metabolism[MESH]|Models, Theoretical[MESH]|Oxidoreductases/chemistry/metabolism[MESH]|Photosynthetic Reaction Center Complex Proteins/chemistry/metabolism[MESH]|Static Electricity[MESH] |
