Molecular dynamics/order parameter extrapolation for bionanosystem simulations.
Molecular dynamics/order parameter extrapolation for bionanosystem simulations.
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DOI:
10.1002/jcc.21071
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发表时间:
2009-02
影响因子:
3
通讯作者:
Ortoleva, Peter J.
中科院分区:
文献类型:
--
作者:
Miao, Yinglong;Ortoleva, Peter J.
A multiscale approach, Molecular Dynamics/Order Parameter eXtrapolation (MD/OPX), to the all-atom simulation of large bionanosystems is presented. The approach starts with the introduction of a set of order parameters (OPs) automatically generated with orthogonal polynomials to characterize the nanoscale features of bionanosystems. The OPs are shown to evolve slowly via Newton’s equations and the all-atom multiscale analysis (AMA) developed earlier demonstrates the existence of their stochastic dynamics, which serve as the justification for our MD/OPX approach. In MD/OPX, a short MD run estimates the rate of change of the OPs, which is then used to extrapolate the state of the system over time that is much longer than the 10−14 second timescale of fast atomic vibrations and collisions. The approach is implemented in NAMD and demonstrated on cowpea chlorotic mottle virus (CCMV) capsid structural transitions (STs). It greatly accelerates the MD code and its underlying all-atom description of the nanosystems enables the use of a universal inter-atomic force field, avoiding recalibration with each new application as needed for coarse-grained models.
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影响因子:
5.4
作者:
FRICKS, CE;HOGLE, JM
通讯作者:
HOGLE, JM
影响因子:
5.6
作者:
Canady, MA;Tsuruta, H;Johnson, JE
通讯作者:
Johnson, JE
影响因子:
--
作者:
ASKAR, A;SPACE, B;RABITZ, H
通讯作者:
RABITZ, H
影响因子:
3.4
作者:
Harries, D;May, S;Ben-Shaul, A
通讯作者:
Ben-Shaul, A
影响因子:
4.4
作者:
Miao, Yinglong;Ortoleva, Peter
通讯作者:
Ortoleva, Peter