Importance of the CMAP correction to the CHARMM22 protein force field: Dynamics of hen lysozyme

被引:297
作者
Buck, M [1 ]
Bouguet-Bonnet, S
Pastor, RW
MacKerell, AD
机构
[1] Case Western Reserve Univ, Dept Physiol & Biophys, Sch Med, Cleveland, OH 44106 USA
[2] US FDA, Ctr Biol Evaluat & Res, Biophys Lab, Rockville, MD 20852 USA
[3] Univ Maryland, Sch Pharm, Baltimore, MD 21201 USA
关键词
D O I
10.1529/biophysj.105.078154
中图分类号
Q6 [生物物理学];
学科分类号
071011 ;
摘要
The recently developed CMAP correction to the CHARMM22 force field (C22) is evaluated from 25 ns molecular dynamics simulations on hen lysozyme. Substantial deviations from experimental backbone root mean-square fluctuations and N-H NMR order parameters obtained in the C22 trajectories (especially in the loops) are eliminated by the CMAP correction. Thus, the C22/CMAP force field yields improved dynamical and structural properties of proteins in molecular dynamics simulations.
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收藏
页码:L36 / L38
页数:3
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