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arXiv 1405.0929q-bio.BM
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序列协同进化给出了蛋白质复合物的三维接触和结构

Sequence co-evolution gives 3D contacts and structures of protein complexes

Thomas A. Hopf, Charlotta P. I. Schärfe, João P. G. L. M. Rodrigues, Anna G. Green, Chris Sander, Alexandre M. J. J. Bonvin, Debora S. Marks

摘要:

蛋白质相互作用是许多生物过程的基础。实验筛选已经确定了数以万计的相互作用,结构生物学为选择3D蛋白质复合物提供了详细的功能见解。关于蛋白质相互作用的另一个丰富的信息来源是进化序列记录。在早期工作的基础上,我们表明,跨蛋白质的相关进化序列变化的分析确定的残基,是接近的空间有足够的准确性,以确定的三维结构的蛋白质复合物。我们在盲法测试中评估了76个已知3D结构的复合物的预测性能,预测了32个未知结构的复合物中的蛋白质-蛋白质接触,并演示了如何使用进化耦合来区分大型复合物中相互作用和非相互作用的蛋白质对。随着目前序列数据库的增长,我们期望该方法可以推广到全基因组范围内的蛋白质相互作用网络的阐明,并用于在残基分辨率的相互作用预测。

英文摘要:

Protein-protein interactions are fundamental to many biological processes. Experimental screens have identified tens of thousands of interactions and structural biology has provided detailed functional insight for select 3D protein complexes. An alternative rich source of information about protein interactions is the evolutionary sequence record. Building on earlier work, we show that analysis of correlated evolutionary sequence changes across proteins identifies residues that are close in space with sufficient accuracy to determine the three-dimensional structure of the protein complexes. We evaluate prediction performance in blinded tests on 76 complexes of known 3D structure, predict protein-protein contacts in 32 complexes of unknown structure, and demonstrate how evolutionary couplings can be used to distinguish between interacting and non-interacting protein pairs in a large complex. With the current growth of sequence databases, we expect that the method can be generalized to genome-wide elucidation of protein-protein interaction networks and used for interaction predictions at residue resolution.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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