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A theory on the migration of an extraneous electron across hydrogen bonds in polypeptides

Chandra, AK and Sudhindra, BS and Vijayan, M and Ramasarma, T (1978) A theory on the migration of an extraneous electron across hydrogen bonds in polypeptides. In: Journal of Theoretical Biology, 74 (1). 1 -9.

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Official URL: http://dx.doi.org/10.1016/0022-5193(78)90285-0

Abstract

The migrating electrons in biological systems normally are extraneous and taking this into account the electron delocalisation across the hydrogen bonds in proteins is re-examined. It is seen that an extraneous electron can travel rapidly via the low-lying virtual orbitals of the hydrogen-bonded π-electronic structure of peptide units in proteins. The frequency of electron transfer decreases slowly with an increase in the path length. However, the coupling of electron and protonic motions enhances this frequency. Transfer of electrons across the hydrogen bonds in accordance with the double-exchange mechanism does not appear to be possible. This theory offers a possibility for an extraneous electron to transfer within protein structures.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Department/Centre: Division of Biological Sciences > Microbiology & Cell Biology
Date Deposited: 02 Nov 2010 06:14
Last Modified: 18 Oct 2011 05:57
URI: http://eprints.iisc.ernet.in/id/eprint/33517

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