THE EFFECTS OF DAMPING AND TEMPERATURE OF MEDIUM ON THE SOLITON EXCITED IN alpha-HELIX PROTEIN MOLECULES WITH THREE CHANNELS

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	THE EFFECTS OF DAMPING AND TEMPERATURE OF MEDIUM ON THE SOLITON EXCITED IN alpha-HELIX PROTEIN MOLECULES WITH THREE CHANNELS
	X. F. Pang; M. J. Liu
	2009
发表期刊	Modern Physics Letters B
ISSN	0217-9849
卷号	23 期号:1 页码:71-88
摘要	We studied numerically the influences of damping and temperature of medium on the properties of the soliton transported bio-energy in the alpha-helix protein molecules with three channels by using the dynamic equations in the improved Davydov theory and fourth-order Runge-Kutta method. speed, in which the shape and energy of the soliton can remain in the cases of motion, whether short-time at T=0 or long time at T=300 K. In these motions, the solition can travel over about 700 amino acid residues, thus its lifetime is, at least, 120 ps at 300 K. When the two solitons undergo a collision, they can also retain themselves forms to transport towards. These results are consistent with the analytic result obtained by quantum perturbed theory in this model. However, the amplitudes of the solitons depress along with increase of temperature of the medium, and it begins to didperse at 320 K. In the meanwhile, the damping of the medium can influence the states and properties of the soliton excited in alpha-helix protein molecules. The soliton is dispersed at the large damping coefficient Gamma = 4 Gamma(0) at 300 K. The results show that the soliton excited in the alpha-helix protein molecules with three channels is very robust against the damping and thermal perturbation of medium at biological temperature of 300 K. Thus we can conclude that the soliton can play importeant part in the bio-energy transport and the improved model is possibly a candidate for the mechanism of the energy of the transport in the alpha-helix proteins.
部门归属	[pang, xiao-feng; liu, mei-jie] univ elect sci & technol china, inst life sci & technol, chengdu 610054, peoples r china. [pang, xiao-feng] chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;pang, xf (reprint author), univ elect sci & technol china, inst life sci & technol, chengdu 610054, peoples r china
关键词	Bio-energy Transport Soliton Protein Damping Temperature Dynamics Runge-kutta Method Vibrational-energy-spectra Davydov Soliton Finite-temperature Thermodynamic Properties Vibron Solitons Living Systems Polaron Band Quantum Dynamics Crystals
URL	查看原文
WOS记录号	WOS:000263629400006
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32232
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. F. Pang,M. J. Liu. THE EFFECTS OF DAMPING AND TEMPERATURE OF MEDIUM ON THE SOLITON EXCITED IN alpha-HELIX PROTEIN MOLECULES WITH THREE CHANNELS[J]. Modern Physics Letters B,2009,23(1):71-88.
APA	X. F. Pang,&M. J. Liu.(2009).THE EFFECTS OF DAMPING AND TEMPERATURE OF MEDIUM ON THE SOLITON EXCITED IN alpha-HELIX PROTEIN MOLECULES WITH THREE CHANNELS.Modern Physics Letters B,23(1),71-88.
MLA	X. F. Pang,et al."THE EFFECTS OF DAMPING AND TEMPERATURE OF MEDIUM ON THE SOLITON EXCITED IN alpha-HELIX PROTEIN MOLECULES WITH THREE CHANNELS".Modern Physics Letters B 23.1(2009):71-88.