Abstract:We propose a bead-spring model that accurately reproduces a variety of experimental force-extension curves of long double-stranded DNA and RNA, including torsionally constrained and unconstrained DNA, and negatively supercoiled DNA. A key feature of the model is a specific non-convex energy function of the spring. We provide an algorithm for obtaining five required parameters of the model from experimental force-extension curves. In the plateau region of the force-extension curves, our molecular dynamics simul… Show more
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