The preparation of deoxy derivatives of mannose-1-phosphate and their substrate specificity towards recombinant GDP-mannose pyrophosphorylase from Salmonella enterica, group B
摘要:
2-Deoxy-alpha-D-glucose-1-phosphate, 3-deoxy-alpha-D-arabino-hexose-1-phosphate, 4-deoxy-alpha-D-lyxo-hexose-1-phosphate, and alpha-D-lyxose-1-phosphate were synthesised chemically, and evaluated as substrates for a recombinant GDP-mannose pyrophosphorylase (Salmonella enterica, group B, cloned in Escherichia coli). The deoxy derivatives were all substrates for the enzyme, with slightly reduced V-max values but significantly higher K-m values than those recorded for the native substrate, mannose-1-phosphate. The pyrophosphorylase was used for the synthesis of GDP-mannose analogues GDP-2-deoxy-glucose and GDP-lyxose on a milligram scale. (C) 2000 Elsevier Science Ltd. All rights reserved.
Efficient Enzymatic Synthesis of Guanosine 5′-Diphosphate-Sugars and Derivatives
作者:Lei Li、Yonghui Liu、Yue Wan、Yanhong Li、Xi Chen、Wei Zhao、Peng George Wang
DOI:10.1021/ol402585c
日期:2013.11
Bifidobacterium infantis (NahK_15697), a guanosine 5′-diphosphate (GDP)-mannose pyrophosphorylase from Pyrococcus furiosus (PFManC), and an Escherichia coli inorganic pyrophosphatase (EcPpA) were used efficiently for a one-pot three-enzyme synthesis of GDP-mannose, GDP-glucose, their derivatives, and GDP-talose. This study represents the first facile and efficient enzymatic synthesis of GDP-sugars and derivatives
来自婴儿双歧杆菌的N-乙酰己糖胺 1-激酶(NahK_15697)、来自激烈火球菌(PFManC)的鸟苷 5'-二磷酸 (GDP)-甘露糖焦磷酸化酶和大肠杆菌无机焦磷酸酶 (EcPpA) 被有效地用于一锅GDP-甘露糖、GDP-葡萄糖及其衍生物和GDP-塔糖的三酶合成。这项研究代表了从单糖和衍生物开始的 GDP 糖和衍生物的首次简便有效的酶促合成。