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Proton-Based Ultrafast Magic Angle Spinning Solid-State NMR Spectroscopy
Accounts of Chemical Research ( IF 16.4 ) Pub Date : 2017-03-29 00:00:00 , DOI: 10.1021/acs.accounts.7b00082
Rongchun Zhang 1 , Kamal H. Mroue 1 , Ayyalusamy Ramamoorthy 1
Affiliation  

Protons are vastly abundant in a wide range of exciting macromolecules and thus can be a powerful probe to investigate the structure and dynamics at atomic resolution using solid-state NMR (ssNMR) spectroscopy. Unfortunately, the high signal sensitivity, afforded by the high natural-abundance and high gyromagnetic ratio of protons, is greatly compromised by severe line broadening due to the very strong 1H–1H dipolar couplings. As a result, protons are rarely used, in spite of the desperate need for enhancing the sensitivity of ssNMR to study a variety of systems that are not amenable for high resolution investigation using other techniques including X-ray crystallography, cryo-electron microscopy, and solution NMR spectroscopy. Thanks to the remarkable improvement in proton spectral resolution afforded by the significant advances in magic-angle-spinning (MAS) probe technology, 1H ssNMR spectroscopy has recently attracted considerable attention in the structural and dynamics studies of various molecular systems. However, it still remains a challenge to obtain narrow 1H spectral lines, especially from proteins, without resorting to deuteration.

中文翻译:

基于质子的超快魔角旋转固态NMR光谱

质子在各种令人兴奋的大分子中非常丰富,因此可以成为使用固态NMR(ssNMR)光谱研究原子分辨率下的结构和动力学的有力探针。不幸的是,由于非常强的1 H– 1,严重的谱线展宽极大地损害了质子的高自然丰度和高旋磁比所提供的高信号灵敏度。H偶极耦合。结果,尽管迫切需要提高ssNMR的灵敏度,以研究使用其他技术(包括X射线晶体学,低温电子显微镜和溶液NMR光谱。得益于魔角旋转(MAS)探针技术的重大进步,质子光谱分辨率有了显着提高,近来1 H ssNMR光谱学已在各种分子系统的结构和动力学研究中引起了相当大的关注。然而,仍然难以获得窄的1 H谱线,尤其是从蛋白质中获得1 H谱线而又不借助氘。
更新日期:2017-03-29
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