The present invention relates to labeled chiral alpha-hydroxy ketoacid derivatives, a process for preparing said derivatives and their use for isotopic labeling of amino acids, in particular, for isotopic labeling of methyl groups of amino acids, and more particularly, for specific isotopic labeling of valine, leucine and isoleucine methyl groups, in proteins and biomolecular assemblies. The invention also concerns a process for analyzing proteins and biomoiecular assemblies by NMR spectroscopy comprising a step of isotopic labeling of amino acids, in particular, valine, leucine and isoleucine, in proteins and biomolecular assemblies to be analyzed by the chiral alpha-hydroxy ketoacid derivatives of the invention. The invention further relates to a kit for isotopic labeling of valine, leucine and isoleucine amino acids, in proteins and biomolecular assemblies comprising one or more chiral alpha-hydroxy ketoacid derivatives of the invention.
本发明涉及标记的手性α-羟基
酮酸衍
生物,一种制备该衍
生物的方法以及它们用于
氨基酸的同位素标记,特别是用于
氨基酸的甲基基团的同位素标记,更具体地说,用于特定同位素标记蛋白质和
生物分子组装中缬
氨酸、亮
氨酸和
异亮氨酸甲基基团的同位素标记。该发明还涉及一种通过NMR光谱分析蛋白质和
生物分子组装的方法,其中包括对待分析的蛋白质和
生物分子组装中的
氨基酸,特别是缬
氨酸、亮
氨酸和
异亮氨酸进行同位素标记,以使用本发明的手性α-羟基
酮酸衍
生物。此外,该发明涉及一种用于对缬
氨酸、亮
氨酸和
异亮氨酸氨基酸在蛋白质和
生物分子组装中进行同位素标记的试剂盒,其中包括本发明的一个或多个手性α-羟基
酮酸衍
生物。