Regioselective Phosphorylation of Carbohydrates and Various Alcohols by Bacterial Acid Phosphatases; Probing the Substrate Specificity of the Enzyme fromShigella flexneri
作者:Teunie van Herk、Aloysius F. Hartog、Alida M. van der Burg、Ron Wever
DOI:10.1002/adsc.200505072
日期:2005.6
broad range of carbohydrates and alcohols. Many cyclic carbohydrates are phosphorylated in a regioselective manner. Non-cyclic carbohydrates are phosphorylated as well. Phosphorylation of linear alcohols, cyclic and aromatic alcohols is also possible. In all cases the acid phosphatase from Shigella prefers a primary alcohol function above a secondary one. We conclude that these enzymes are an attractive
细菌非特异性酸性磷酸酶通常催化多种底物的去磷酸化。如前所述,来自弗氏志贺氏菌和肠炎沙门氏菌的酶也能够使用廉价的焦磷酸盐作为磷酸盐供体,催化将肌苷磷酸化为肌苷单磷酸和将D-葡萄糖磷酸化为D-葡萄糖6-磷酸(D-G6P)。经过优化后,在后一反应中可实现高收率(95%),我们在此表明可以以制备方式使用这些酶。这促使我们使用31P NMR和HPLC还可以使多种碳水化合物和醇类进行磷酸化。许多环状碳水化合物以区域选择性方式被磷酸化。非环状碳水化合物也被磷酸化。直链醇,环状和芳族醇的磷酸化也是可能的。在所有情况下,志贺氏菌的酸性磷酸酶都比伯醇更喜欢伯醇功能。我们得出结论,在广泛范围的化合物磷酸化中,这些酶是现有化学和酶促方法的一种有吸引力的替代物。