Synthesis and enzymatic evaluation of modified acceptors of recombinant blood group A and B glycosyltransferases
作者:Ali Mukherjee、Monica M. Palcic、Ole Hindsgaul
DOI:10.1016/s0008-6215(00)00003-3
日期:2000.5
alpha-L-Fucp-(1 --> 2)-beta-D-Galp-(1 --> O)-Octyl (1) is an acceptor for the human blood group A and B glycosyltransferases. Seven analogues of 1, containing deoxy, methoxy and arabino modifications of the Fuc residue, were chemically synthesized and kinetically evaluated in radioactive enzymatic assays. Both the enzymes tolerate modification of the 3'-OH on the fucose residue. The 2'-OH was found
二糖α-L-Fucp-(1-> 2)-β-D-Galp-(1-> O)-辛基(1)是人血A和B组糖基转移酶的受体。化学合成了1的七个类似物,其中包含Fuc残基的脱氧,甲氧基和阿拉伯糖基修饰,并在放射性酶分析中进行了动力学评估。两种酶都耐受岩藻糖残基上3'-OH的修饰。发现2'-OH是这些酶识别受体的关键。阿拉伯糖衍生物被A转移酶(Km为200 microM)识别为受体,但未被B转移酶识别,并且是第一个能够区分两种酶活性的合成受体。