Grid-based prediction of torsion angle probabilities of protein backbone and its application to discrimination of protein intrinsic disorder regions and selection of model structures.
Grid-based prediction of torsion angle probabilities of protein backbone and its application to discrimination of protein intrinsic disorder regions and selection of model structures.
复制标题
基于网格的蛋白质骨架扭转角概率预测及其在蛋白质内在无序区域判别和模型结构选择中的应用
DOI:
10.1186/s12859-018-2031-7
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发表时间:
2018-02-01
影响因子:
3
通讯作者:
Zhou Y
中科院分区:
文献类型:
--
作者:
Gao J;Yang Y;Zhou Y
Protein structure can be described by backbone torsion angles: rotational angles about the N-Cα bond (φ) and the Cα-C bond (ψ) or the angle between Cαi-1-Cαi-Cαi + 1 (θ) and the rotational angle about the Cαi-Cαi + 1 bond (τ). Thus, their accurate prediction is useful for structure prediction and model refinement. Early methods predicted torsion angles in a few discrete bins whereas most recent methods have focused on prediction of angles in real, continuous values. Real value prediction, however, is unable to provide the information on probabilities of predicted angles. Here, we propose to predict angles in fine grids of 5° by using deep learning neural networks. We found that this grid-based technique can yield 2–6% higher accuracy in predicting angles in the same 5° bin than existing prediction techniques compared. We further demonstrate the usefulness of predicted probabilities at given angle bins in discrimination of intrinsically disorder regions and in selection of protein models. The proposed method may be useful for characterizing protein structure and disorder. The method is available at http://sparks-lab.org/server/SPIDER2/ as a part of SPIDER2 package. The online version of this article (10.1186/s12859-018-2031-7) contains supplementary material, which is available to authorized users.
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影响因子:
3
作者:
Ray A;Lindahl E;Wallner B
通讯作者:
Wallner B
影响因子:
14.9
作者:
Cole C;Barber JD;Barton GJ
通讯作者:
Barton GJ
影响因子:
4.4
作者:
Sirota FL;Ooi HS;Gattermayer T;Schneider G;Eisenhaber F;Maurer-Stroh S
通讯作者:
Maurer-Stroh S
影响因子:
3.7
作者:
Singh H;Singh S;Raghava GP
通讯作者:
Raghava GP
影响因子:
5.8
作者:
Gao, Jianzhao;Yang, Yuedong;Zhou, Yaoqi
通讯作者:
Zhou, Yaoqi