Effective coupling in biological electron transfer: exponential or complex distance dependence?

J W Evenson; M Karplus

doi:10.1126/science.8235654

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PubMed · 8235654

Effective coupling in biological electron transfer: exponential or complex distance dependence?

J W Evenson·M Karplus

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Abstract

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.

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Animals Cytochrome c Group Electron Transport Heme Mathematics Models, Biological Models, Chemical Tuna Journal Article Research Support, U.S. Gov't, Non-P.H.S.

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J W Evenson, M Karplus. 1993-11-19. Effective coupling in biological electron transfer: exponential or complex distance dependence?. https://doi.org/10.1126/science.8235654

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