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Electron transfer and protein dynamics (1987)

Knapp, E. W. ; Fischer, S. F.

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 87 (1987), S. 3880-3887

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ISSN: 1089-7690

Source: AIP Digital Archive

Topics: Physics , Chemistry and Pharmacology

Notes: The electron transfer process from cytochrome c to the special pair is revisited. In the present model the transfer rate in photosynthetic reaction centers of Chromatium vinosum is modulated by fluctuations of the dielectric constant of the protein environment between the donor and acceptor site. The fluctuations enter the rate expression as the inverse of a Lamb–Mössbauer factor. The strong temperature dependence of the transfer rate can thus be related to protein specific dynamics. Experimental evidence about such dynamics is provided by recently recorded Mössbauer spectra of iron containing proteins [Parak et al., J. Mol. Biol. 161, 177 (1982)].

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.452943

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