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Electronic transport in DNA
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Klotsa, Daphne, Roemer, Rudolf A. and Turner, Matthew S. (2008) Electronic transport in DNA. Biophysical Journal, Vol.89 . pp. 2187-2198. doi:10.1529/biophysj.105.064014 ISSN 0006-3495.
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Official URL: http://dx.doi.org/10.1529/biophysj.105.064014
Abstract
We study the electronic properties of DNA by way of a tight-binding model applied to four particular DNA sequences. The charge transfer properties are presented in terms of localization lengths (crudely speaking, the length over
which electrons travel). Various types of disorder, including random potentials, are employed to account for different real environments. We have performed calculations on poly(dG)-poly(dC), telomeric-DNA, random-ATGC DNA, and l-DNA. We find that random and l-DNA have localization lengths allowing for electron motion among a few dozen basepairs only. A novel enhancement of localization lengths is observed at particular energies for an increasing binary backbone disorder. We comment on the possible biological relevance of sequence-dependent charge transfer in DNA.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Centre for Scientific Computing Faculty of Science, Engineering and Medicine > Science > Physics |
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Library of Congress Subject Headings (LCSH): | DNA, Charge transfer in biology | ||||
Journal or Publication Title: | Biophysical Journal | ||||
Publisher: | Biophysical Society | ||||
ISSN: | 0006-3495 | ||||
Official Date: | 29 October 2008 | ||||
Dates: |
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Volume: | Vol.89 | ||||
Page Range: | pp. 2187-2198 | ||||
DOI: | 10.1529/biophysj.105.064014 | ||||
Status: | Peer Reviewed | ||||
Access rights to Published version: | Open Access (Creative Commons) |
Data sourced from Thomson Reuters' Web of Knowledge
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