Anthranilic acid, the new player in the ensemble of aromatic residue labeling precursor compounds
作者:Julia Schörghuber、Leonhard Geist、Marilena Bisaccia、Frederik Weber、Robert Konrat、Roman J. Lichtenecker
DOI:10.1007/s10858-017-0129-2
日期:2017.9
The application of metabolic precursors for selective stable isotope labeling of aromatic residues in cell-based protein overexpression has already resulted in numerous NMR probes to study the structural and dynamic characteristics of proteins. With anthranilic acid, we present the structurally simplest precursor for exclusive tryptophan side chain labeling. A synthetic route to 13C, 2H isotopologues
代谢前体在基于细胞的蛋白过表达中对芳香族残基进行选择性稳定同位素标记的应用已经产生了许多NMR探针来研究蛋白质的结构和动力学特征。与邻氨基苯甲酸一起,我们提出了结构简单的独家色氨酸侧链标记的前体。合成13C,2H同位素异构体的途径允许在色氨酸的吲哚环中安装独立的13C-1H自旋系统,这是使用基于松弛的实验研究侧链运动的多功能工具,而不会由于强1JCC和较弱而失去磁化强度2JCH标量耦合,以及与远端氢的偶极相互作用。在本文中,