Deriving Ligand Orientation in Weak Protein-Ligand Complexes by DEEP-STD NMR Spectroscopy in the Absence of Protein Chemical-Shift Assignment.
Deriving Ligand Orientation in Weak Protein-Ligand Complexes by DEEP-STD NMR Spectroscopy in the Absence of Protein Chemical-Shift Assignment.
复制标题
在没有蛋白质化学班次分配的情况下,通过深-STD NMR光谱在弱蛋白质配合物中得出配体方向。
DOI:
10.1002/cbic.201800568
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发表时间:
2019-02-01
期刊:
影响因子:
--
通讯作者:
Angulo J
中科院分区:
文献类型:
--
作者:
Nepravishta R;Walpole S;Tailford L;Juge N;Angulo J
Differential epitope mapping saturation transfer difference (DEEP‐STD) NMR spectroscopy is a recently developed powerful approach for elucidating the structure and pharmacophore of weak protein–ligand interactions, as it reports key information on the orientation of the ligand and the architecture of the binding pocket.1 The method relies on selective saturation of protein residues in the binding site and the generation of a differential epitope map by observing the ligand, which depicts the nature of the protein residues making contact with the ligand in the bound state. Selective saturation requires knowledge of the chemical‐shift assignment of the protein residues, which can be obtained either experimentally by NMR spectroscopy or predicted from 3D structures. Herein, we propose a simple experimental procedure to expand the DEEP‐STD NMR methodology to protein–ligand cases in which the spectral assignment of the protein is not available. This is achieved by experimentally identifying the chemical shifts of the residues present in binding hot‐spots on the surface of the receptor protein by using 2D NMR experiments combined with a paramagnetic probe.
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