Comparison of the substrate specificity of type I and type II dehydroquinases with 5-deoxy- and 4,5-dideoxy-dehydroquinic acid
作者:Joanna M. Harris、William J. Watkins、Alastair R. Hawkins、John R. Coggins、Chris Abell
DOI:10.1039/p19960002371
日期:——
Syntheses of 5-deoxydehydroquinic acid and 4,5-dideoxydehydroquinic acid from quinic acid are described. These substrate analogues were tested against the mechanistically-distinct type I and type II dehydroquinases. The C-4 hydroxy group of the substrate is shown to be important for imine formation on the type I enzyme but appears not to contribute significantly to specificity on the type II dehydroquinase.
本文描述了奎尼酸的5-脱氧脱氢奎尼酸和4,5-二脱氧脱氢奎尼酸的合成。这些底物类似物分别与机械结构不同的I型和II型脱氢奎尼酸进行了测试。结果表明,底物的C-4羟基对于I型酶上的亚胺形成非常重要,但对于II型脱氢奎尼酸的特异性似乎没有显著贡献。