Partial alignment, residual dipolar couplings and molecular symmetry in solution NMR

Partial alignment, residual dipolar couplings and molecular symmetry in solution NMR
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溶液 NMR 中的部分排列、残余偶极耦合和分子对称性

DOI:
10.1007/s10858-019-00256-2
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发表时间:
2019
影响因子:
2.7
通讯作者:
Lorieau, Justin L.
Lorieau, Justin L.
中科院分区:
生物学3区
文献类型:
--
作者:
Lorieau, Justin L.

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残余偶极耦合(RDC)和残余各向异性化学位移(RACS)的溶液NMR样品的部分排列产生。RDC和RACS产生关于分子中键和化学基团方向的高分辨率结构和动态信息。许多分子形成低聚物或具有内在对称性,这可以简化其部分比对数据集的分析。在这份报告中,我们探讨了部分对齐使用不可约的球形表示的理论,我们调查的影响,分子的排列的分子对称性。虽然以前的研究已经报告了简化的关系,部分对齐的分子轴承不同的对称群,我们表明,这些简化的关系可能不是普遍的,只适用于一组有限的系统。
Residual dipolar couplings (RDCs) and residual anisotropic chemical shifts (RACSs) are produced by the partial alignment of solution NMR samples. RDCs and RACSs yield high-resolution structural and dynamic information on the orientation of bonds and chemical groups in molecules. Many molecules form oligomers or have intrinsic symmetries, which may simplify the analysis of their partial alignment datasets. In this report, we explore the theory of partial alignment using an irreducible spherical representation, and we investigate the impact of molecular symmetry on the alignment of molecules. Though previous studies have reported simplified relationships on the partial alignment of molecules bearing different symmetry groups, we show that these simplified relationships may not be universal and only apply to a limited set of systems.
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