Enzymatic synthesis of N-glycoprotein linkage region disaccharide mimetics using β-N-acetylhexosaminidases from Aspergillus oryzae and Vigna radiata
作者:Thiruneelakantan Lakshmanan、Duraikkannu Loganathan
DOI:10.1016/j.tetasy.2004.11.016
日期:2005.1
the versatility of β-N-acetylhexosaminidase from Aspergillus oryzae. The efficacy of the enzyme from Vigna radiata for synthesis has been demonstrated for the first time. This is also the first report on the use of derivatized sugars as co-reactants in glycosidase catalyzed reversed hydrolysis mode of synthesis. The excellent (1→6) selectivity of mung beans β-N-acetylhexosaminidase under transglycosylation
糖苷酶是用于合成多种二糖和寡糖的有价值的催化剂。本文中,我们报道了N-糖蛋白连接区的简单模型β-1- N-乙酰氨基-2-乙酰氨基-2-脱氧-d-吡喃葡萄糖作为β- N催化的二糖合成的新型受体的用途。-米曲霉和绿豆(Vigna radiata)的α-乙酰己糖胺酶在转糖基化作用下以及逆水解作用下发生。二糖模型,β-d-GlcNAc-(1→4)的专属形成-D-GlcNAcβNHAc,通过转糖和下反转水解相应的(1→6)模拟无论是在合理的产率表明的β-通用性Ñ -乙酰己糖胺酶米曲霉。首次证明了来自Vigna radiata的酶用于合成的功效。这也是关于在糖苷酶催化的逆水解合成模式中使用衍生糖作为共反应物的第一份报告。绿豆β- N-乙酰基己糖胺酶在转糖基作用下的优异选择性(1→6)和米曲霉在逆水解作用下的优异选择性将被证明是非常有用的。