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Paper detail

Rigidity of Melting DNA

The temperature dependence of DNA flexibility is studied in the presence of stretching and unzipping forces. Two classes of models are considered. In one case the origin of elasticity is entropic due to the polymeric correlations, and in the other the double-stranded DNA is taken to have an intrinsic rigidity for bending. In both cases single strands are completely flexible. The change in the elastic constant for the flexible case due to thermally generated bubbles is obtained exactly. For the case of intrinsic rigidity, the elastic constant is found to be proportional to the square root of the bubble number fluctuation.

preprint2016arXivOpen access
Tanmoy PalSomendra M. Bhattacharjee
cond-mat.stat-mechcond-mat.softBiomolecules
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Tanmoy PalSomendra M. Bhattacharjee

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