Using molecular dynamics trajectories to predict nuclear spin relaxation behaviour in large spin systems.
Using molecular dynamics trajectories to predict nuclear spin relaxation behaviour in large spin systems.
复制标题
用分子动力学轨迹预测大自旋系统中的核自旋弛豫行为。
DOI:
10.1016/j.jmr.2020.106891
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发表时间:
2021-03
期刊:
影响因子:
--
通讯作者:
Prestegard JH
中科院分区:
文献类型:
--
作者:
Kuprov I;Morris LC;Glushka JN;Prestegard JH
Molecular dynamics (MD) trajectories provide useful insights into molecular structure and dynamics. However, questions persist about the quantitative accuracy of those insights. Experimental NMR spin relaxation rates can be used as tests, but only if relaxation superoperators can be efficiently computed from MD trajectories - no mean feat for the quantum Liouville space formalism where matrix dimensions quadruple with each added spin 1/2. Here we report a module for the Spinach software framework that computes Bloch-Redfield-Wangsness relaxation superoperators (including non-secular terms and cross-correlations) from MD trajectories. Predicted initial slopes of nuclear Overhauser effects for sucrose trajectories using advanced water models and a force field optimised for glycans are within 25% of experimental values.
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