The effect of anisotropic bending elasticity on the structure of bent DNA

被引：12

作者：

Mohammad-Rafiee, F ^{[1
]}

Golestanian, R ^{[1
]}

机构：

[1] Inst Adv Studies Basic Sci, Zanjan 45195159, Iran

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2005年 / 17卷 / 14期

关键词：

D O I：

10.1088/0953-8984/17/14/004

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The response of a short DNA segment to bending is studied, taking into account the anisotropy in the bending rigidities. It is shown that due to the helical structure of DNA, the anisotropy in the bending rigidities can lead to the formation of kinks and modulations in the curvature, depending on the values of the elastic constants. The typical wavelength for the modulations, or the distance between the neighbouring kinks, is found to be set by half of the DNA pitch.

引用

收藏

页码：S1165 / S1170

页数：6

相关论文

共 31 条

[1] Simulations of the molecular dynamics of nucleic acids [J].

Auffinger, P ;

Westhof, E .

CURRENT OPINION IN STRUCTURAL BIOLOGY, 1998, 8 (02) :227-236

[2] Elastic rod model of a DNA loop in the lac operon [J].

Balaeff, A ;

Mahadevan, L ;

Schulten, K .

PHYSICAL REVIEW LETTERS, 1999, 83 (23) :4900-4903

[3] GEOMETRY AND MECHANICS OF DNA SUPERHELICITY [J].

BENHAM, CJ .

BIOPOLYMERS, 1983, 22 (11) :2477-2495

[4]

Bloomfield V. A., 2000, NUCL ACIDS STRUCTURE

[5] Elasticity model of a supercoiled DNA molecule [J].

Bouchiat, C ;

Mezard, M .

PHYSICAL REVIEW LETTERS, 1998, 80 (07) :1556-1559

[6] Elastic rod model of a supercoiled DNA molecule [J].

Bouchiat, C ;

Mézard, M .

EUROPEAN PHYSICAL JOURNAL E, 2000, 2 (04) :377-402

[7] 3-DIMENSIONAL STRUCTURE OF ESCHERICHIA-COLI RNA-POLYMERASE HOLOENZYME DETERMINED BY ELECTRON CRYSTALLOGRAPHY [J].

DARST, SA ;

KUBALEK, EW ;

KORNBERG, RD .

NATURE, 1989, 340 (6236) :730-732

[8] Conformations of linear DNA [J].

Fain, B ;

Rudnick, J ;

Ostlund, S .

PHYSICAL REVIEW E, 1997, 55 (06) :7364-7368

[9] Conformations of closed DNA [J].

Fain, B ;

Rudnick, J .

PHYSICAL REVIEW E, 1999, 60 (06) :7239-7252

[10] Direct determination of DNA twist-stretch coupling [J].

Kamien, RD ;

Lubensky, TC ;

Nelson, P ;

OHern, CS .

EUROPHYSICS LETTERS, 1997, 38 (03) :237-242

← 1 2 3 4 →