A comparison of NCO and NCA transfer methods for biological solid-state NMR spectroscopy.

A comparison of NCO and NCA transfer methods for biological solid-state NMR spectroscopy.
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NCO和NCA转移方法的生物固态NMR光谱法的比较。

DOI:
10.1016/j.jmr.2011.10.012
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发表时间:
2012-01
影响因子:
2.2
通讯作者:
Oschkinat, Hartmut
Oschkinat, Hartmut
中科院分区:
化学3区
文献类型:
--
作者:
Loening, Nikolaus M.;Bjerring, Morten;Nielsen, Niels Chr;Oschkinat, Hartmut

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比较了在魔角旋转条件下的固态 NMR 实验中将 15N 磁化强度转移到 13C 的三种不同技术(绝热通道 ​​Hartman-Hahn 交叉极化、最佳控制设计脉冲和 EXPORT)。我们证明,与绝热通道 ​​Hartman-Hahn 交叉极化相比,最佳控制转移脉冲对于均匀 13C,15N 标记的样品可实现相似或更好的转移效率,并且通常优于具有非均匀标记方案(例如 1,3- 和 2-13C 甘油标记)的样品。此外,最佳控制脉冲通常使用明显较低的平均 RF 场强,并且对于实验变化和 RF 不均匀性更加稳健。因此,它们更适合要求较高的样品。
Three different techniques (adiabatic passage Hartman-Hahn cross-polarization, optimal control designed pulses, and EXPORT) are compared for transferring 15N magnetization to 13C in solid-state NMR experiments under magic-angle-spinning conditions. We demonstrate that, in comparison to adiabatic passage Hartman-Hahn cross-polarization, optimal control transfer pulses achieve similar or better transfer efficiencies for uniformly-13C,15N labelled samples and are generally superior for samples with non-uniform labeling schemes (such as 1,3- and 2-13C glycerol labeling). In addition, the optimal control pulses typically use substantially lower average RF field strengths and are more robust with respect to experimental variation and RF inhomogeneity. Consequently, they are better suited for demanding samples.
DOI: 10.1080/00268979809483251
发表时间: 1998-12-20
期刊: MOLECULAR PHYSICS
影响因子: 1.7
作者:
Baldus, M;Petkova, AT;Griffin, RG
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影响因子: 2.2
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