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Electron Transfer Between Biological Molecules by Thermally Activated Tunneling
Open accessAbstract
A theory of electron transfer between two fixed sites by tunneling is developed. Vibronic coupling in the individual molecules produces an activation energy to transfer at high temperatures, and temperature-independent tunneling (when energetically allowed) at low temperature. The model is compared with known results on electron transfer in Chromatium and in Rhodopseudomonas spheroides . It quantitatively interprets these results, with parameters whose scale is verified by comparison with optical absorption spectra. According to this description, the separation between linking sites for electron transfer is 8-10 Å in Chromatium , far smaller than earlier estimates.
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Cites
Studies of Photosynthesis Using a Pulsed Laser
De Vault, D., & Chance, B. (1966) · Biophysical Journal · doi:10.1016/s0006-3495(66)86698-5 · Cited by 487
Cited by
Reaction-rate theory: fifty years after Kramers
Hänggi, P., Talkner, P., & Borkovec, M. (1990) · Reviews of Modern Physics · doi:10.1103/revmodphys.62.251 · Cited by 6,154
Stubbe, J., Nocera, D. G., Yee, C. S., & Chang, M. C. Y. (2003) · Chemical Reviews · doi:10.1021/cr020421u · Cited by 823
Quantum mechanical tunnelling in biological systems
Devault, D. (1980) · Quarterly Reviews of Biophysics · doi:10.1017/s003358350000175x · Cited by 406
Kleinfeld, D., Okamura, M. Y., & Feher, G. (1984) · Biochemistry · doi:10.1021/bi00319a017 · Cited by 344
Winkler, J. R., & Gray, H. B. (2014) · Journal of the American Chemical Society · doi:10.1021/ja500215j · Cited by 306
Metadata
- Authors
- Hopfield, J. J.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 1974-09
- Volume
- 71
- Issue
- 9
- Pages
- 3640-3644
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2053167395
- Cited by
- 918
- References
- 1
- FWCI
- 9.41
- Type
- journal article
- Language
- en
- Open access
- green
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
