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
相关论文
共 43 条
  • [1] Thermal denaturation of a helicoidal DNA model
    Barbi, M
    Lepri, S
    Peyrard, M
    Theodorakopoulos, N
    [J]. PHYSICAL REVIEW E, 2003, 68 (06):
  • [2] Helicoidal model for DNA opening
    Barbi, M
    Cocco, S
    Peyrard, M
    [J]. PHYSICS LETTERS A, 1999, 253 (5-6) : 358 - 369
  • [3] Statistical physics of the melting of inhomogeneous DNA
    Buyukdagli, Sahin
    Joyeux, Marc
    [J]. PHYSICAL REVIEW E, 2008, 77 (03):
  • [4] Bubble propagation in a helicoidal molecular chain
    Campa, A
    [J]. PHYSICAL REVIEW E, 2001, 63 (02): : 021901 - 021901
  • [5] Shear Unzipping of DNA
    Chakrabarti, Buddhapriya
    Nelson, David R.
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2009, 113 (12) : 3831 - 3836
  • [6] COMPOSITION OF HUMAN DESOXYPENTOSE NUCLEIC ACID
    CHARGAFF, E
    ZAMENHOF, S
    GREEN, C
    [J]. NATURE, 1950, 165 (4202) : 756 - 757
  • [7] Statistical mechanics of torque induced denaturation of DNA
    Cocco, S
    Monasson, R
    [J]. PHYSICAL REVIEW LETTERS, 1999, 83 (24) : 5178 - 5181
  • [8] ENERGY LOCALIZATION IN NONLINEAR LATTICES
    DAUXOIS, T
    PEYRARD, M
    [J]. PHYSICAL REVIEW LETTERS, 1993, 70 (25) : 3935 - 3938
  • [9] DYNAMICS AND THERMODYNAMICS OF A NONLINEAR MODEL FOR DNA DENATURATION
    DAUXOIS, T
    PEYRARD, M
    BISHOP, AR
    [J]. PHYSICAL REVIEW E, 1993, 47 (01): : 684 - 695
  • [10] ENTROPY-DRIVEN TRANSITION IN A ONE-DIMENSIONAL SYSTEM
    DAUXOIS, T
    PEYRARD, M
    [J]. PHYSICAL REVIEW E, 1995, 51 (05): : 4027 - 4040
12345