Nonlinear molecular excitations in a completely inhomogeneous DNA chain

被引：24

作者：

Daniel, M. ^{[1
]}

Vasumathi, V. ^{[1
]}

机构：

[1] Bharathidasan Univ, Ctr Nonlinear Dynam, Sch Phys, Tiruchirappalli 620024, India

来源：

PHYSICS LETTERS A | 2008年 / 372卷 / 31期

关键词：

DNA; soliton; multiple scale perturbation;

D O I：

10.1016/j.physleta.2008.05.063

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the nonlinear dynamics of a completely inhomogeneous DNA chain which is governed by a perturbed sine-Gordon equation. A multiple scale perturbation analysis provides perturbed kink-antikink solitons to represent open state configuration with small fluctuation. The perturbation due to inhomogeneities changes the velocity of the soliton. However, the width of the soliton remains constant. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：5144 / 5151

页数：8

共 38 条

[1]

ABLOWITZ MJ, 1974, STUD APPL MATH, V53, P249

[2] Thermal denaturation of a helicoidal DNA model [J].

Barbi, M ;

Lepri, S ;

Peyrard, M ;

Theodorakopoulos, N .

PHYSICAL REVIEW E, 2003, 68 (06)

[3] Helicoidal model for DNA opening [J].

Barbi, M ;

Cocco, S ;

Peyrard, M .

PHYSICS LETTERS A, 1999, 253 (5-6) :358-369

[4] Composite model for DNA torsion dynamics [J].

Cadoni, Mariano ;

De Leo, Roberto ;

Gaeta, Giuseppe .

PHYSICAL REVIEW E, 2007, 75 (02)

[5] Bubble propagation in a helicoidal molecular chain [J].

Campa, A .

PHYSICAL REVIEW E, 2001, 63 (02) :021901-021901

[6] ON A TODA LATTICE MODEL WITH A TRANSVERSAL DEGREE OF FREEDOM [J].

CHRISTIANSEN, PL ;

LOMDAHL, PS ;

MUTO, V .

NONLINEARITY, 1991, 4 (02) :477-501

[7] Statistical mechanics of torque induced denaturation of DNA [J].

Cocco, S ;

Monasson, R .

PHYSICAL REVIEW LETTERS, 1999, 83 (24) :5178-5181

[8] Observation of spontaneous base pair breathing events in the molecular dynamics simulation of a difluorotoluene-containing DNA oligonucleotide [J].

Cubero, E ;

Sherer, EC ;

Luque, FJ ;

Orozco, M ;

Laughton, CA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (37) :8653-8654

[9] Interaction induced deformation of two coupled XY spin chains [J].

Dandoloff, R ;

Saxena, A .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1997, 9 (50) :L667-L670

[10] Perturbed soliton excitations in the DNA double helix [J].

Daniel, M. ;

Vasumathi, V. .

PHYSICA D-NONLINEAR PHENOMENA, 2007, 231 (01) :10-29

← 1 2 3 4 →