Solving protein structures using short-distance cross-linking constraints as a guide for discrete molecular dynamics simulations.

Solving protein structures using short-distance cross-linking constraints as a guide for discrete molecular dynamics simulations.
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DOI:
10.1126/sciadv.1700479
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发表时间:
2017-07
期刊:
影响因子:
13.6
通讯作者:
Borchers CH
Borchers CH
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Brodie NI;Popov KI;Petrotchenko EV;Dokholyan NV;Borchers CH

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Short-distance cross-linking constraints combined with discrete molecular dynamics enable rapid prediction of protein structures. We present an integrated experimental and computational approach for de novo protein structure determination in which short-distance cross-linking data are incorporated into rapid discrete molecular dynamics (DMD) simulations as constraints, reducing the conformational space and achieving the correct protein folding on practical time scales. We tested our approach on myoglobin and FK506 binding protein—models for α helix–rich and β sheet–rich proteins, respectively—and found that the lowest-energy structures obtained were in agreement with the crystal structure, hydrogen-deuterium exchange, surface modification, and long-distance cross-linking validation data. Our approach is readily applicable to other proteins with unknown structures.
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发表时间: 2008-07-01
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