Journal
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
Volume 387, Issue 27, Pages 6790-6800Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physa.2008.09.014
Keywords
Statistical mechanics; Single molecules; Random walk
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We study the three-dimensional persistent random walk with drift. Then we develop a thermodynamic model that is based on this random walk without assuming the Boltzmann-Gibbs form for the equilibrium distribution. The simplicity of the model allows us to perform all calculations in closed form. We show that, despite its simplicity, the model can be used to describe different polymer stretching experiments. We study the reversible overstretching transition of DNA and the static force-extension relation of the protein titin. (C) 2008 Elsevier B.V. All rights reserved.
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