On the quantum dynamics of Davydov solitons in protein α-helices

被引：32

作者：

Georgiev, Danko D. ^{[1
]}

Glazebrook, James F. ^{[2
]}

机构：

[1] Inst Adv Study, Varna, Bulgaria

[2] Eastern Illinois Univ, Dept Math & Comp Sci, Charleston, IL 61920 USA

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2019年 / 517卷

关键词：

Davydov soliton; Numerical simulation; Protein alpha-helix; Quantum dynamics; Stability; ENERGY-TRANSFER; POLARON MOTION; MODEL; SPECTRA;

D O I：

10.1016/j.physa.2018.11.026

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The transport of energy inside protein alpha-helices is studied by deriving a system of quantum equations of motion from the Davydov Hamiltonian with the use of the Schrificlinger equation and the generalized Ehrenfest theorem. Numerically solving the system of quantum equations of motion for different initial distributions of the amide I energy over the peptide groups confirmed the generation of both moving or stationary Davydov solitons. In this simulation the soliton generation, propagation, and stability were found to be dependent on the symmetry of the exciton-phonon interaction Hamiltonian and the initial site of application of the exciton energy. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：257 / 269

页数：13