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arXiv · 0805.0469

Sequence-Dependent Effects on the Properties of Semiflexible Biopolymers

Zicong Zhou·Bela Joos
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Abstract

Using path integral technique, we show exactly that for a semiflexible biopolymer in constant extension ensemble, no matter how long the polymer and how large the external force, the effects of short range correlations in the sequence-dependent spontaneous curvatures and torsions can be incorporated into a model with well-defined mean spontaneous curvature and torsion as well as a renormalized persistence length. Moreover, for a long biopolymer with large mean persistence length, the sequence-dependent persistence lengths can be replaced by their mean. However, for a short biopolymer or for a biopolymer with small persistence lengths, inhomogeneity in persistence lengths tends to make physical observables very sensitive to details and therefore less predictable.

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BibTeXRIS

Zicong Zhou, Bela Joos. 2008-05-16. Sequence-Dependent Effects on the Properties of Semiflexible Biopolymers. https://doi.org/10.1103/physreve.77.061906

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