Synthesis of[13C]-isotopomers of indole and tryptophan for use in the analysis of indole-3-acetic acid biosynthesis
作者:Nebojša Ilić、Jerry D. Cohen
DOI:10.1002/jlcr.850
日期:2004.9
purification of the enzymes that carry out the enzymatic synthesis of indole-3-acetic acid from labeled indole, it was necessary to develop an assay that had both high sensitivity and analytical precision. To obtain the required analytical resolution and to allow definitive product identification, [13C6]indole was synthesized for use in GC-MS assays of the enzymatic conversion. Plants have been shown to be
吲哚直接转化为吲哚-3-乙酸,没有色氨酸作为中间体,先前已经证明在植物幼苗体内和体外发生。为了促进从标记的吲哚中酶促合成吲哚-3-乙酸的酶的纯化,有必要开发一种具有高灵敏度和分析精度的检测方法。为了获得所需的分析分辨率并允许确定的产品鉴定,合成了 [13C6] 吲哚用于酶促转化的 GC-MS 分析。植物已被证明能够直接从吲哚以及通过色氨酸降解合成吲哚-3-乙酸。因此,为了允许在这些过程之间进行生化区分,合成的[13C6]吲哚被用作一种新的酶促合成L-色氨酸的[13C]同位素在特定位置标记的起始材料。总之,这些同位素标记的吲哚化合物为理解和区分体外和体内吲哚-3-乙酸生物合成途径提供了强有力的新方法。版权所有 © 2004 John Wiley & Sons, Ltd.