Comment on "Flexibility of short DNA helices with finite-length effect: From base pairs to tens of base pairs"

While analyzing the persistence length of DNA atomistic simulations Wu et al. [J. Chem. Phys. 142, 125103 (2015)] introduced an empirical formula to account for the observed length-dependence. In particular they found that the persistence length increases with the distance. Here, we derive the formu...

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Bibliographic Details
Published inarXiv.org
Main Authors Segers, Midas, Skoruppa, Enrico, Stevens, Jan A, Vangilbergen, Merijn, Voorspoels, Aderik, Carlon, Enrico
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 24.10.2021
Subjects
Couplings
Empirical analysis
Helices
Physics - Soft Condensed Matter
Physics - Statistical Mechanics
Quantitative Biology - Biomolecules
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Summary:While analyzing the persistence length of DNA atomistic simulations Wu et al. [J. Chem. Phys. 142, 125103 (2015)] introduced an empirical formula to account for the observed length-dependence. In particular they found that the persistence length increases with the distance. Here, we derive the formula by Wu et al. using a non-local twistable wormlike chain which introduces couplings between distal sites. Finally, we show that the same formula can account for the length-scale dependence of the torsional persistence length and is, in fact, applicable to any kind of polymer model with non-local couplings.
ISSN:2331-8422
DOI:10.48550/arxiv.2110.12389