Discovery of AMP Mimetics that Exhibit High Inhibitory Potency and Specificity for AMP Deaminase
作者:Mark D. Erion、Srinivas Rao Kasibhatla、Brett C. Bookser、Paul D. van Poelje、M. Rami Reddy、Harry E. Gruber、James R. Appleman
DOI:10.1021/ja983153j
日期:1999.1.1
The first potent, specific, and cell-penetrable AMP deaminase (AMPDA) inhibitors were discovered through an investigation of 3-substituted 3,6,7,8-tetrahydroimidazo[4,5-d][1,3]diazepin-8-ol analogues. Inhibition constants for the most potent inhibitors were 105-fold lower than the KM for the substrate AMP. High affinity required the presence of both the 8-hydroxyl and the 3-substituent and is postulated
通过对 3-取代 3,6,7,8-四氢咪唑并[4,5-d][1,3]diazepin-8-的研究,发现了第一个有效、特异性和细胞可渗透的 AMP 脱氨酶 (AMPDA) 抑制剂ol 类似物。最有效抑制剂的抑制常数比底物 AMP 的 KM 低 105 倍。高亲和力需要 8-羟基和 3-取代基的存在,并且被假定来自于降低结合熵成本并使二氮杂碱基采用模拟过渡态 (TS) 结构的结合构象的协同相互作用. 相对于其他 AMP 结合酶,AMPDA 抑制剂系列的高特异性 (> 105)部分归因于二氮杂碱,它有利于与用于稳定 TS 结构的残基相互作用,并排除通常由 AMP 结合酶用于结合 AMP 的相互作用。相比之下,AMPDA 和腺苷脱氨酶 (ADA) 之间的区别,这两种酶假定稳定类似的 TS 结构......