Atomic-accuracy models from 4.5-Å cryo-electron microscopy data with density-guided iterative local refinement.
Atomic-accuracy models from 4.5-Å cryo-electron microscopy data with density-guided iterative local refinement.
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DOI:
10.1038/nmeth.3286
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发表时间:
2015-04
期刊:
影响因子:
48
通讯作者:
Baker, David
中科院分区:
文献类型:
--
作者:
DiMaio, Frank;Song, Yifan;Li, Xueming;Brunner, Matthias J.;Xu, Chunfu;Conticello, Vincent;Egelman, Edward;Marlovits, Thomas C.;Cheng, Yifan;Baker, David
Direct electron detectors have made it possible to generate electron density maps at near atomic resolution using cryo-electron microscopy single particle reconstructions. Critical current questions include how best to build models into these maps, how high quality a map is required to generate an accurate model, and how to cross-validate models in a system independent way. We describe a modeling approach that integrates Monte Carlo optimization with local density guided moves, Rosetta all-atom refinement, and real space B-factor fitting, yielding accurate models from experimental maps for three different systems with resolutions 4.5 Å or higher. We characterize model accuracy as a function of data quality, and present a model validation statistic that correlates with model accuracy over the three test systems.
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影响因子:
48
作者:
Li, Xueming;Mooney, Paul;Zheng, Shawn;Booth, Christopher R.;Braunfeld, Michael B.;Gubbens, Sander;Agard, David A.;Cheng, Yifan
通讯作者:
Cheng, Yifan
影响因子:
56.9
作者:
Schraidt, Oliver;Marlovits, Thomas C.
通讯作者:
Marlovits, Thomas C.
影响因子:
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Tjioe, Elina;Lasker, Keren;Sali, Andrej
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Sali, Andrej
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14.9
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Davis IW;Leaver-Fay A;Chen VB;Block JN;Kapral GJ;Wang X;Murray LW;Arendall WB 3rd;Snoeyink J;Richardson JS;Richardson DC
通讯作者:
Richardson DC
影响因子:
4.8
作者:
Trabuco, Leonardo G.;Villa, Elizabeth;Schreiner, Eduard;Harrison, Christopher B.;Schulten, Klaus
通讯作者:
Schulten, Klaus