Melting of genomic DNA: Predictive modeling by nonlinear lattice dynamics

Nikos Theodorakopoulos
Phys. Rev. E 82, 021905 – Published 6 August 2010

Abstract

The melting behavior of long, heterogeneous DNA chains is examined within the framework of the nonlinear lattice dynamics based Peyrard-Bishop-Dauxois (PBD) model. Data for the pBR322 plasmid and the complete T7 phage have been used to obtain model fits and determine parameter dependence on salt content. Melting curves predicted for the complete fd phage and the Y1 and Y2 fragments of the ϕX174 phage without any adjustable parameters are in good agreement with experiment. The calculated probabilities for single base-pair opening are consistent with values obtained from imino proton exchange experiments.

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  • Received 15 January 2010

DOI:https://doi.org/10.1103/PhysRevE.82.021905

©2010 American Physical Society

Authors & Affiliations

Nikos Theodorakopoulos

  • Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, Vasileos Constantinou 48, 116 35 Athens, Greece and Fachbereich Physik, Universität Konstanz, 78457 Konstanz, Germany

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Vol. 82, Iss. 2 — August 2010

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