Hydroxamate based inhibitors of adenylyl cyclase. Part 1: The effect of acyclic linkers on P-site binding
作者:Daniel E Levy、Charles Marlowe、Kim Kane-Maguire、Ming Bao、Diana B Cherbavaz、James E Tomlinson、David M Sedlock、Robert M Scarborough
DOI:10.1016/s0960-894x(02)00653-4
日期:2002.11
The adenylyl cyclases (ACs) are a family of enzymes that are key elements of signal transduction by virtue of their ability to convert ATP to cAMP. The catalytic mechanism of this transformation proceeds through initial binding of ATP to the purine binding site (P-site) followed by metal mediated cyclization with loss of pyrophosphate. Crystallographic analysis of ACs with known inhibitors reveals
腺苷酸环化酶(AC)是一类酶,由于其将ATP转化为cAMP的能力而成为信号转导的关键元素。这种转化的催化机制是通过ATP与嘌呤结合位点(P-位点)的初始结合而进行的,随后是金属介导的环化反应而失去了焦磷酸盐。用已知抑制剂对AC进行的晶体学分析表明,活性位点中存在两种金属。目前,已知腺苷酸环化酶的九种同工型,并且以组织特异性的方式表达独特的同工型组合。腺苷酸环化酶同工型特异性抑制剂的开发可能被证明是设计新型治疗剂的有用策略。为了开发新型AC抑制剂,我们选择了一种利用腺嘌呤环系统分子通过柔性无环接头与金属配位异羟肟酸连接的设计方法。对设计的抑制剂针对V AC型进行分析,其中接头的大小和杂原子含量发生变化,以探测酶中核苷酸和金属结合位点的相互作用。