New measurements of DNA twist elasticity

被引：21

作者：

Nelson, P ^{[1
]}

机构：

[1] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

来源：

BIOPHYSICAL JOURNAL | 1998年 / 74卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0006-3495(98)77958-5

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

The symmetries of the DNA double helix require a new term in its linear response to stress: the coupling between twist and stretch. Recent experiments with torsionally constrained single molecules give the first direct measurement of this new material parameter. We extract its value from a recent experiment, Finally, we sketch the effect of constrained twist on entropic elasticity of DNA arising from the connection between Link, Twist, and Writhe.

引用

页码：2501 / 2503

页数：3

共 16 条

[11] THE HELICITY OF DNA IN COMPLEXES WITH RECA PROTEIN [J].

STASIAK, A ;

DICAPUA, E .

NATURE, 1982, 299 (5879) :185-186

[12] The elasticity of a single supercoiled DNA molecule [J].

Strick, TR ;

Allemand, JF ;

Bensimon, D ;

Bensimon, A ;

Croquette, V .

SCIENCE, 1996, 271 (5257) :1835-1837

[13] DNA EXTENSION UNDER THE ACTION OF AN EXTERNAL FORCE [J].

VOLOGODSKII, A .

MACROMOLECULES, 1994, 27 (20) :5623-5625

[14] STATISTICAL-MECHANICS OF SUPERCOILS AND THE TORSIONAL STIFFNESS OF THE DNA DOUBLE HELIX [J].

VOLOGODSKII, AV ;

ANSHELEVICH, VV ;

LUKASHIN, AV ;

FRANKKAMENETSKII, MD .

NATURE, 1979, 280 (5720) :294-298

[15] Extension of torsionally stressed DNA by external force [J].

Vologodskii, AV ;

Marko, JF .

BIOPHYSICAL JOURNAL, 1997, 73 (01) :123-132

[16] Stretching DNA with optical tweezers [J].

Wang, MD ;

Yin, H ;

Landick, R ;

Gelles, J ;

Block, SM .

BIOPHYSICAL JOURNAL, 1997, 72 (03) :1335-1346

← 1 2 →