Bending and Twisting Elasticity: a Revised Marko-Siggia Model on DNA Chirality

Дата и время публикации : 1998-03-01T01:04:07Z

Авторы публикации и институты :
Zhou Haijun
Ou-Yang Zhong-can

Ссылка на журнал-издание: Phys.Rev.E 58 (1998) 4816
Коментарии к cтатье: 7 pages in Latex form, without figure. Significant changes have been made in this version, especially in the latter part
Первичная категория: cond-mat.soft

Все категории : cond-mat.soft, cond-mat.mtrl-sci, cond-mat.stat-mech, q-bio

Краткий обзор статьи: A revised Marko-Siggia elastic model for DNA double helix [Macromolecules 27, 981 (1994)] is proposed, which includes the WLC bending energy and a new chiral twisting energy term. It is predicted that the mean helical repeat length (HRL) for short DNA rings increases with the decreasing of chain length; while for very long chains, their mean HRL is the same, independent of both the chain length and whether the ends are closed, it is longer than the value for rectilinear DNAs. Our results are in good agreement with experiments.

Category: Physics