Volume 86, Number 4, May 2009
|Number of page(s)||5|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||22 May 2009|
Generalized wormlike chain model for long-range correlated heteropolymers
Laboratoire Joliot-Curie and Laboratoire de Physique, CNRS, ENS-Lyon - 46 Allée d'Italie, F69007 Lyon, France, EU and Université de Lyon - F69000 Lyon, France, EU
Corresponding author: firstname.lastname@example.org
Accepted: 5 May 2009
We extend the 2D wormlike chain model (WLC) for semiflexible polymers to long-range correlated (LRC) heteropolymers. The conjugated contributions of i) the thermal curvature fluctuations characterized by the “dynamic” persistence length and ii) the intrinsic LRC curvature disorder of amplitude and Hurst exponent , characterized by a “static” persistence length , are shown to be described by a continuum of generalized WLC (GWLC) models parametrized by the LRC exponent H. Exact analytic calculations and perturbative analysis are supported by numerical simulations. The relevance of the GWLC model for the description of the elastic properties of genomic DNA is discussed.
PACS: 87.14.G- – Nucleic acids / 87.15.A- – Theory, modeling, and computer simulation / 36.20.Ey – Conformation (statistics and dynamics)
© EPLA, 2009
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