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Electron tunneling in biological molecules

Winkler, Jay R. and Di Bilio, Angel J. and Farrow, Neil A. and Richards, John H. and Gray, Harry B. (1999) Electron tunneling in biological molecules. Pure and Applied Chemistry, 71 (9). pp. 1753-1764. ISSN 0033-4545. doi:10.1351/pac199971091753.

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Electron transfers in photosynthesis and respiration commonly occur between protein-bound prosthetic groups that are separated by large molecular distances (often greater than 10Å). Although the electron donors and acceptors are expected to be weakly coupled, the reactions are remarkably fast and proceed with high specificity. Tunneling timetables based on analyses of Fe^(2+)/Cu^+ to Ru^(3+) electron-transfer rates for Ru-modified heme and copper proteins reveal that the structure of the intervening polypeptide can control these distant donor-acceptor couplings. Multistep tunneling can account for the relatively rapid Cu^+ to Re^(2+) electron transfer observed in Re-modified azurin.

Item Type:Article
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URLURL TypeDescription
Winkler, Jay R.0000-0002-4453-9716
Gray, Harry B.0000-0002-7937-7876
Additional Information:© 1999 IUPAC. Our work on protein electron transfer is supported by the National Institutes of Health, the National Science Foundation, and the Arnold and Mabel Beckman Foundation.
Funding AgencyGrant Number
Arnold and Mabel Beckman FoundationUNSPECIFIED
Issue or Number:9
Record Number:CaltechAUTHORS:20150428-092352002
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Official Citation:Electron tunneling in biological molecules J. R. Winkler, Angel J. Di Bilio, N. A. Farrow, J. H. Richards and H. B. Gray p. 1753
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57041
Deposited By: Ruth Sustaita
Deposited On:29 Apr 2015 14:49
Last Modified:10 Nov 2021 21:07

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