Charge transport in poly(dG)-poly(dC) and poly(dA)-poly(dT) DNA polymers

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dc.creatorHennig, D.
dc.creatorStarikov, E. B.
dc.creatorArchilla, J. F. R.
dc.creatorPalmero, F.
dc.date2003-08-01
dc.date.accessioned2026-07-07T05:34:54Z
dc.date.available2026-07-07T05:34:54Z
dc.descriptionWe investigate the charge transport in synthetic DNA polymers built up from single types of base pairs. In the context of a polaron-like model, for which an electronic tight-binding system and bond vibrations of the double helix are coupled, we present estimates for the electron-vibration coupling strengths utilizing a quantum-chemical procedure. Subsequent studies concerning the mobility of polaron solutions, representing the state of a localized charge in unison with its associated helix deformation, show that the system for poly(dG)-poly(dC) and poly(dA)-poly(dT) DNA polymers, respectively possess quantitatively distinct transport properties. While the former supports unidirectionally moving electron breathers attributed to highly efficient long-range conductivity the breather mobility in the latter case is comparatively restrained inhibiting charge transport. Our results are in agreement with recent experimental results demonstrating that poly(dG)-poly(dC) DNA molecules acts as a semiconducting nanowire and exhibits better conductance than poly(dA)-poly(dT) ones.
dc.description11 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/nlin/0308003
dc.identifierhttp://arxiv.org/abs/nlin/0308003
dc.identifierJournal of Biological Physics 30 (3): 227-238, 2004
dc.identifierdoi:10.1023/B:JOBP.0000046721.92623.a9
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/80542
dc.subjectPattern Formation and Solitons
dc.subjectSoft Condensed Matter
dc.subjectAdaptation and Self-Organizing Systems
dc.subjectBiomolecules
dc.titleCharge transport in poly(dG)-poly(dC) and poly(dA)-poly(dT) DNA polymers
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