High-resolution NMR spectroscopy of encapsulated proteins dissolved in low-viscosity fluids.

High-resolution NMR spectroscopy of encapsulated proteins dissolved in low-viscosity fluids.
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DOI:
10.1016/j.jmr.2013.10.006
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发表时间:
2014-04
影响因子:
2.2
通讯作者:
Wand, A. Joshua
Wand, A. Joshua
中科院分区:
化学3区
文献类型:
--
作者:
Nucci, Nathaniel V.;Valentine, Kathleen G.;Wand, A. Joshua

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高分辨率多维溶液核磁共振作为生物物理和生化工具的独特之处在于,它能够以原子分辨率检查大分子的结构和动力学。然而,传统的溶液核磁共振方法在很大程度上仅限于检查相对较小(< 25 kDa)的分子,这主要是由于缓慢旋转扩散的光谱后果。将大分子封装在溶解在低粘度流体中的反胶束的保护性纳米级水性内部中已被开发为克服“缓慢翻滚问题”的一种手段。该方法已成功应用于高达 100 kDa 的多种蛋白质和核酸,大大拓宽了传统溶液 NMR 方法可应用的生物大分子的范围。方法论的最新进展显着扩大了这种方法在结构生物学和分子生物物理学中的实用性。
High-resolution multi-dimensional solution NMR is unique as a biophysical and biochemical tool in its ability to examine both the structure and dynamics of macromolecules at atomic resolution. Conventional solution NMR approaches, however, are largely limited to examinations of relatively small (< 25 kDa) molecules, mostly due to the spectroscopic consequences of slow rotational diffusion. Encapsulation of macromolecules within the protective nanoscale aqueous interior of reverse micelles dissolved in low viscosity fluids has been developed as a means through which the ‘slow tumbling problem’ can be overcome. This approach has been successfully applied to diverse proteins and nucleic acids ranging up to 100 kDa, considerably widening the range of biological macromolecules to which conventional solution NMR methodologies may be applied. Recent advances in methodology have significantly broadened the utility of this approach in structural biology and molecular biophysics.
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