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Anisotropic Elastic Model for Short DNA Loops

2006/05/03 by G. Bijani, N. Hamedani Radja, Bijani, G. +5
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #Biomolecules (q-bio.BM) #FOS: Biological sciences #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Soft Condensed Matter (cond-mat.soft) #cond-mat.mtrl-sci #cond-mat.soft #q-bio.BM

paper · pdf · doi:10.48550/arxiv.cond-mat/0605086

4 pages and one figure

arxiv created 2008/09/17 · arxiv updated 2009/12/01

Abstract

Effect of bending anisotropy on a planar DNA loop, using energy minimization and neglecting entropic effects, is studied. We show that the anisotropy results in polygonal shape of the loop and increasing the anisotropy makes the edges sharper. Calculating the energy of such a loop lets us to find effective persistence length as the geometrical mean of hard and soft rigidities, which is quite different from harmonic mean for an unconstrained long DNA.

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