De novo main-chain modeling for EM maps using MAINMAST.
De novo main-chain modeling for EM maps using MAINMAST.
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DOI:
10.1038/s41467-018-04053-7
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发表时间:
2018-04-24
影响因子:
16.6
通讯作者:
Kihara D
中科院分区:
文献类型:
--
作者:
Terashi G;Kihara D
An increasing number of protein structures are determined by cryo-electron microscopy (cryo-EM) at near atomic resolution. However, tracing the main-chains and building full-atom models from EM maps of ~4–5 Å is still not trivial and remains a time-consuming task. Here, we introduce a fully automated de novo structure modeling method, MAINMAST, which builds three-dimensional models of a protein from a near-atomic resolution EM map. The method directly traces the protein’s main-chain and identifies Cα positions as tree-graph structures in the EM map. MAINMAST performs significantly better than existing software in building global protein structure models on data sets of 40 simulated density maps at 5 Å resolution and 30 experimentally determined maps at 2.6–4.8 Å resolution. In another benchmark of building missing fragments in protein models for EM maps, MAINMAST builds fragments of 11–161 residues long with an average RMSD of 2.68 Å. Main-chain tracing remains a time-consuming task for medium resolution cryo-EM maps. Here the authors describe MAINMAST, a computational approach for building main-chain structure models of proteins from EM maps of 4-5 Å resolution that builds main-chain models of the protein by tracing local dense points in the density distribution.
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影响因子:
48
作者:
Kucukelbir, Alp;Sigworth, Fred J.;Tagare, Hemant D.
通讯作者:
Tagare, Hemant D.
影响因子:
48
作者:
Nogales E
通讯作者:
Nogales E
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48
作者:
Frenz B;Walls AC;Egelman EH;Veesler D;DiMaio F
通讯作者:
DiMaio F
影响因子:
7.7
作者:
Kühlbrandt W
通讯作者:
Kühlbrandt W
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3
作者:
Tang, Guang;Peng, Liwei;Ludtke, Steven J.
通讯作者:
Ludtke, Steven J.