Abstract
The polaron approach is used to treat long-range electron transfers between globular proteins. A rate expression for the polaron transfer model is given along with a description of appropriate conditions for its use. Assuming that electrons transfer via a superexchange coupling due to a polaron excitation, we have estimated the distance dependence of the rate constant for the self-exchange reactions between globular proteins in solutions. The distance dependence of the polaron coupling and solvent reorganization energy are provided as a basis for understanding and interpreting a long-range electron transfer experiment. The difficulties and problems of the polaron treatment of long-range electron transfers are discussed, and suggestions for new experiments are made.
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Chuev, G., Lakhno, V. & Ustitnin, M. Superexchange coupling and electron transfer in globular proteins via polaron excitations. Journal of Biological Physics 24, 245–256 (1999). https://doi.org/10.1023/A:1005175306267
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DOI: https://doi.org/10.1023/A:1005175306267