Influences of temperature and solvent ions in solution on states and properties of deoxyribonucleic acid (DNA)
文献类型:期刊论文
作者 | X. F. Pang ; Y. Y. Feng ; H. W. Zhang ; A. F. Jalbout ; R. X. Dong |
刊名 | Communications in Theoretical Physics
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出版日期 | 2005 |
卷号 | 43期号:6页码:1141-1152 |
关键词 | dynamical property DNA nonlinearity soliton solvent ion specific heat breather trapping mechanism consistent phonon theory klein-gordon lattices one-dimensional model peyrard-bishop model hydrogen-bond statistical-mechanics double helices vibrational-modes nonlinear model |
ISSN号 | 0253-6102 |
中文摘要 | We here study the influences of the temperature and solvent ions in solution on the states and properties of DNA by a new dynamical model. This model admits three degrees of freedom per base-pair: two displacement variables related to the vibrations of the hydrogen atom in the hydrogen bonds and base (nucleotide), respectively, and an angular variable related to the rotation of each base, which delineate different forms of motion of the hydrogen atom and bases and the relations among them. In this -model we stress specially the important role of the hydrogen atom in the hydrogen bonds of the bases in the dynamics of DNA. According to their properties of motion we give the Hamiltonian of the system and the corresponding equations of motion, and End out their soliton solutions. The solitons formed by the displacements of the hydrogen atoms and bases and their rotations are the excitation states arising from the energy absorbed by the DNA working at the biological temperature. We give further the free energy of the thermal excitation state in DNA system by transfer integral way and End out the corresponding specific heat. The specific heat increases with the increasing of the temperature and concentration of the solvent ions in the solution, but is not linear changes in the region of high temperature. If compared with experimental data, they are approximately consistent. Meanwhile we End that the solvent ion conceptration influences seriously on the stability, states, and configurations of DNA. |
原文出处 | |
公开日期 | 2012-04-14 |
源URL | [http://ir.imr.ac.cn/handle/321006/34996] ![]() |
专题 | 金属研究所_中国科学院金属研究所 |
推荐引用方式 GB/T 7714 | X. F. Pang,Y. Y. Feng,H. W. Zhang,et al. Influences of temperature and solvent ions in solution on states and properties of deoxyribonucleic acid (DNA)[J]. Communications in Theoretical Physics,2005,43(6):1141-1152. |
APA | X. F. Pang,Y. Y. Feng,H. W. Zhang,A. F. Jalbout,&R. X. Dong.(2005).Influences of temperature and solvent ions in solution on states and properties of deoxyribonucleic acid (DNA).Communications in Theoretical Physics,43(6),1141-1152. |
MLA | X. F. Pang,et al."Influences of temperature and solvent ions in solution on states and properties of deoxyribonucleic acid (DNA)".Communications in Theoretical Physics 43.6(2005):1141-1152. |
入库方式: OAI收割
来源:金属研究所
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