Thermal properties of a DNA denaturation with solvent interaction

被引：23
|
作者：
Macedo, D. X. [1 ]
Guedes, I. [2 ]
Albuquerque, E. L. [3 ]
机构：
[1] Inst Fed Educ Ciencia & Tecnol Ceara, Dept Ensino, BR-63700000 Crateus, CE, Brazil
[2] Univ Fed Ceara, Dept Fis, BR-60455760 Fortaleza, Ceara, Brazil
[3] Univ Fed Rio Grande do Norte, Dept Biofis & Farmacol, BR-59072970 Natal, RN, Brazil
来源：
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2014年 / 404卷
关键词：
Morse potential; Nonlinear dynamics; DNA segment; Thermodynamics properties; STATISTICAL-MECHANICS; NONLINEAR MODEL; DYNAMICS; TRANSITION; THERMODYNAMICS; SIMULATIONS; IONS;
D O I：
10.1016/j.physa.2014.02.029
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this work we study the effects of the solvent interaction on the nonlinear dynamical structure of a DNA segment, by using a time-independent perturbation approach. Considering a well-known set of values for the spring constant (k) and the Morse (solvent) potential parameters D-n and a(n) (f(s) and lambda(s)), we investigate the denaturation temperature profiles of some DNA's thermodynamical functions, such as the stretching of the hydrogen bonds, the specific heat and the entropy. Besides a sharp thermal profile behavior of these functions, we observe also that the DNA's melting temperature decreases as the solvent potential increases. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：234 / 241
页数：8
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