Calculations for a simple model electron transfer system and tuna cytochrome c demonstrate a dichotomy in the distance dependence of the effective coupling. In one regime, the effective coupling varies exponentially with distance and depends primarily on the average properties of the bridging material; in the other regime, the effective coupling has a complex distance dependence and is more sensitive to the details of the bridging material. Experiments and theory indicate that both regimes may occur in biological systems, providing a perspective on a recent controversy over the nature of the distance dependence.
CITATION STYLE
Evenson, J. W., & Karplus, M. (1993). Effective coupling in biological electron transfer: Exponential or complex distance dependence? Science, 262(5137), 1247–1249. https://doi.org/10.1126/science.8235654
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