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Sinkala Z 《Journal of theoretical biology》2006,241(4):919-927
The study of electron/proton transport in alpha-helix sections of proteins have illustrated the existence of soliton-like mechanisms. Recently, Ciblis and Cosic extended investigation to the existence of possible like soliton-type mechanisms in other parts of the protein. They used Quantum Hamiltonian analysis to investigate. In this paper, we investigate the same problem but we use Classical Hamiltonian analysis in our investigation. 相似文献
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The role of thermal fluctuations in the conformational dynamics of a single closed filament is studied. It is shown that,
due to the interaction between charges and bending degrees of freedom, initially circular chains may undergo transformation
to polygonal shape. 相似文献
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《Electromagnetic biology and medicine》2013,32(2):95-106
The frequency-dependent, resonance-type biological effects of electromagnetic radiation on a-helical protein macromolecules were treated in terms of Davydov soliton (DS) theory. We studied DS over the temperature range from 0 to 350 K. An important characteristic of the autolocalized state is the bond energy, which defines the soliton stability. As the DSs are stable, only a small probability exists of their energy dissipation into heat providing for the high efficiency of energy and charge transduction in bio-systems. However, under the influence of electromagnetic radiation (EMR), the DS decay (photodissociation) probability increases. This approach allows for the qualitative explanation of the resonant effects of low-intensity microwaves on living organisms found in a number of experiments. The dependence of resonance frequency on temperature was obtained this way. The direct charge transfer along the protein molecule may result from the capture of an extra electron by the moving acoustic soliton (electrosoliton). Decay of the electrosoliton under the influence of EMR (photodisintegration) is also examined. 相似文献
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在生物大分子中温度对所激发的孤立子的影响 总被引:4,自引:1,他引:3
研究了生物蛋白质分子的温度T≠OK和分子链作非线性振动情况下所产生的相干性集体激发和激发的孤立子的特点,此时这类孤立子以超声速运动,其振幅和传递速度都随温度和非线性振动作用改变,但这种热涨落的存在并未多大影响这类孤立子的稳定性,因而在生物学过程中是很有用的。 相似文献
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研究了生物蛋白质分子的温度T≠OK和分子链作非线性振动情况下所产生的相干性集体激发和激发的孤立子的特点,此时这类孤立子以超声速运动、其振幅和传递速度都随温度和非线性振动作用改变,但这种热涨落的存在并未多大影响这类孤立子的稳定性.因而在生物学过程中是很有用的. 相似文献
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