Nanomolar inhibition of the enterobactin biosynthesis enzyme, EntE: Synthesis, substituent effects, and additivity
作者:Brian P. Callahan、Joseph V. Lomino、Richard Wolfenden
DOI:10.1016/j.bmcl.2006.04.024
日期:2006.7
3-Dihydroxybenzohydroxamoyl adenylate (I) was prepared as a potential product analog inhibitor of EntE (EC# 2.7.7.58), a 2,3-dihydroxybenzoate AMP ligase from Escherichia coli that is required for the biosynthesis of enterobactin. This compound, obtained by the aqueous reaction of imidazole-activated adenosine 5'-phosphate and 2,3-dihydroxybenzohydroxamic acid, is a competitive inhibitor with a Ki value of 4.5 x
制备2,3-二羟基苯甲氧肟酸腺苷酸(I)作为EntE(EC#2.7.7.58)的潜在产物类似物抑制剂,EntE是大肠杆菌的2,3-二羟基苯甲酸酯AMP连接酶,是肠杆菌素生物合成所必需的。通过咪唑活化的5'-磷酸腺苷和2,3-二羟基苯并异羟肟酸的水反应获得的该化合物是竞争性抑制剂,Ki值为4.5 x 10(-9)M。化合物(II)中(I)的儿茶酚3-OH基团的删除将抑制活性降低了3.5倍,而(III)中的3-OH和2-OH基团的去除均降低了抑制活性。乙酰羟肟酸腺苷酸(IV),其中(I)的整个邻苯二酚部分被氢原子取代,