De novo protein structure determination from near-atomic-resolution cryo-EM maps.

De novo protein structure determination from near-atomic-resolution cryo-EM maps.
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DOI:
10.1038/nmeth.3287
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发表时间:
2015-04
期刊:
影响因子:
48
通讯作者:
DiMaio, Frank
DiMaio, Frank
中科院分区:
生物学1区
文献类型:
--
作者:
Wang, Ray Yu-Ruei;Kudryashev, Mikhail;Li, Xueming;Egelman, Edward H.;Basler, Marek;Cheng, Yifan;Baker, David;DiMaio, Frank

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我们提出了一种从头模型构建方法,该方法将预测的主链构象与侧链密度拟合相结合,以准确地将序列分配到密度图。我们表明,这种方法在3.3-4.8 μ m分辨率下产生六个实验图的准确模型,并产生一个几乎完整的模型,用于包含660个残基的异源二聚体蛋白质的未解决的地图。这种方法应该能够快速和可靠的蛋白质结构的测定从近原子分辨率cryo-EM地图。
We present a de novo model building approach that combines predicted backbone conformations with side-chain density-fit to accurately assign sequence into density maps. We show this method yields accurate models for six experimental maps at 3.3–4.8 Å resolution, and produces a nearly complete model for an unsolved map containing a 660-residue hetero-dimeric protein. This method should enable rapid and reliable protein structure determination from near-atomic resolution cryo-EM maps.
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