Substrate and reaction intermediate mimics as inhibitors of 3-deoxy-d-arabino-heptulosonate 7-phosphate synthase
作者:Scott R. Walker、Hemi Cumming、Emily J. Parker
DOI:10.1039/b909241b
日期:——
3-Deoxy-D-arabino-heptulosonate 7-phosphate (DAH7P) synthase catalyses the aldol-like addition of phosphoenolpyruvate (PEP) to D-erythrose 4-phosphate in the first step of the shikimate pathway to aromatic amino acids. A series of compounds, designed to mimic intermediates in the enzyme-catalysed reaction, have been synthesised and tested as inhibitors for the DAH7P synthase from Escherichia coli. The most potent inhibitor was the vinyl phosphonate, (E)-2-methyl-3-phosphonoacrylic acid, with a Ki of 4.7 µM.
3-Deoxy-D-arabino-heptulosonate 7-phosphate (DAH7P) synthase 催化磷酸烯醇丙酮酸 (PEP) 与 D-erythrose 4-phosphate 的醛醇类加成反应,是莽草酸通向芳香族氨基酸的第一步。我们合成并测试了一系列模拟酶催化反应中间产物的化合物,作为大肠杆菌 DAH7P 合成酶的抑制剂。最有效的抑制剂是乙烯基膦酸,(E)-2-甲基-3-膦酰丙烯酸,Ki 为 4.7 µM。