Influences of Quantum and Disorder Effects on Solitons Excited in Protein Molecules in Improved Model |
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Authors: | PANG Xiao-Feng YU Jia-Feng LUO
Yu-Hui |
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Institution: | 1. Institute of Life Science and Technology, University of Electronics Science and Technology of China, Chengdu 610054, China
;2. International Center for Materials Physics, the Chinese
Academy of Sciences, Shenyang 110015, China |
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Abstract: | Utilizing the improved model with quasi-coherent two-quantum state and new
Hamiltonian containing an additional interaction term Phys. Rev.
E62 (2000) 6989 and Euro. Phys. J. B19 (2001) 297] we study numerically the
influences of the quantum and disorder effects including distortion of the
sequences of masses of amino acid molecules and fluctuations of force
constant of molecular chains, and of exciton-phonon coupled constants and of
the dipole-dipole interaction constant and of the ground state energy on the
properties of the solitons transported the bio-energy in the protein
molecules by Runge-Kutta method. The results obtained show that the new
soliton is robust against these structure disorders, especially for stronger disorders in the sequence of masses spring constants and coupling constants, except for quite larger fluctuations of the ground state energy and dipole-dipole interaction constant. This means that the new soliton in the
improved model is very stable in normal cases and is possibly a carrier of
bio-energy transport in the protein molecules. |
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Keywords: | bio-energy transport protein soliton quantum effect disorder effect numerical simulation |
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