DENATURATION AND PROPAGATION OF THE LOCALIZED EXCITATION IN DNA
YANG XIAN-JUN (杨显俊)ab, ZHUO YI-ZHONG (卓益忠)ac, YAN SHI-WEI (晏世伟)a, WU XI-ZHEN (吴锡真)a
a China Institute of Atomic Energy, P O Box 275 (18), Beijing 102413, China; b Deparment of Physics, Guizhou Institute for Nationalities, Guiyang 550025, China; c Institute of Theoretical Physics, Academia Sinica, Beijing 100080, China
Abstract The thermal denaturation and propagation of the localized excitation in desoxyribonucleic acid (DNA) molecules are studied in the unified way under a new Hamiltonian proposed in this work and the large amplitude motion of the DNA molecules is investigated during the propagation of the localized excitation. We discussed the nonlinear effect on the formation of the localized excitation, and showed that our model not only can reproduce the experimental results of the DNA thermal denaturation, but also can describe the process of the nonlinear localized excitation of fluctuational opening in DNA molecules.
Received: 16 December 1996
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China and the Nuclear Industry and Science Foundation of China.
Cite this article:
YANG XIAN-JUN (杨显俊), ZHUO YI-ZHONG (卓益忠), YAN SHI-WEI (晏世伟), WU XI-ZHEN (吴锡真) DENATURATION AND PROPAGATION OF THE LOCALIZED EXCITATION IN DNA 1997 Acta Physica Sinica (Overseas Edition) 6 780
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