Markov state model reveals folding and functional dynamics in ultra-long MD trajectories.
Markov state model reveals folding and functional dynamics in ultra-long MD trajectories.
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DOI:
10.1021/ja207470h
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发表时间:
2011-11-16
影响因子:
15
通讯作者:
Pande VS
中科院分区:
文献类型:
--
作者:
Lane TJ;Bowman GR;Beauchamp K;Voelz VA;Pande VS
Two strategies have been recently employed to push molecular simulation to long, biologically relevant timescales: projection-based analysis of results from specialized hardware producing a small number of ultra-long trajectories and the statistical interpretation of massive parallel sampling performed with Markov state models (MSMs). Here, we assess the MSM as an analysis method by constructing a Markov model from ultra-long trajectories, specifically two previously reported 100 μs trajectories of the FiP35 WW domain (Shaw et. al. (2010) Science, 330: 341–346). We find that the MSM approach yields novel insights. It discovers new statistically significant folding pathways, in which either beta-hairpin of the WW domain can form first. The rates of this process approach experimental values in a direct quantitative comparison (timescales of 5.0 μs and 100 ns), within a factor of ~2. Finally, the hub-like topology of the MSM and identification of a holo conformation predicts how WW domains may function through a conformational selection mechanism.
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影响因子:
1.6
作者:
Metzner, Philipp;Schuette, Christof;Vanden-Eijnden, Eric
通讯作者:
Vanden-Eijnden, Eric
影响因子:
56.9
作者:
Shaw, David E.;Maragakis, Paul;Wriggers, Willy
通讯作者:
Wriggers, Willy
影响因子:
4.4
作者:
JORGENSEN, WL;CHANDRASEKHAR, J;KLEIN, ML
通讯作者:
KLEIN, ML
影响因子:
4.3
作者:
Morcos F;Chatterjee S;McClendon CL;Brenner PR;López-Rendón R;Zintsmaster J;Ercsey-Ravasz M;Sweet CR;Jacobson MP;Peng JW;Izaguirre JA
通讯作者:
Izaguirre JA
影响因子:
14.8
作者:
Boehr, David D.;Nussinov, Ruth;Wright, Peter E.
通讯作者:
Wright, Peter E.