Thermal Denaturation of Fluctuating DNA Driven by Bending Entropy

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dc.creatorPalmeri, J.
dc.creatorManghi, M.
dc.creatorDestainville, N.
dc.date2006-12-22
dc.date2007-08-28
dc.date.accessioned2026-07-07T08:26:12Z
dc.date.available2026-07-07T08:26:12Z
dc.descriptionA statistical model of homopolymer DNA, coupling internal base pair states (unbroken or broken) and external thermal chain fluctuations, is exactly solved using transfer kernel techniques. The dependence on temperature and DNA length of the fraction of denaturation bubbles and their correlation length is deduced. The thermal denaturation transition emerges naturally when the chain fluctuations are integrated out and is driven by the difference in bending (entropy dominated) free energy between broken and unbroken segments. Conformational properties of DNA, such as persistence length and mean-square-radius, are also explicitly calculated, leading, e.g., to a coherent explanation for the experimentally observed thermal viscosity transition.
dc.description4 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/cond-mat/0612588
dc.identifierhttp://arxiv.org/abs/cond-mat/0612588
dc.identifierPhysical Review Letters 99, 088103 (2007)
dc.identifierdoi:10.1103/PhysRevLett.99.088103
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/136861
dc.subjectSoft Condensed Matter
dc.subjectStatistical Mechanics
dc.subjectBiological Physics
dc.titleThermal Denaturation of Fluctuating DNA Driven by Bending Entropy
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