A Fragment-Based Method to Discover Irreversible Covalent Inhibitors of Cysteine Proteases
作者:Stefan G. Kathman、Ziyang Xu、Alexander V. Statsyuk
DOI:10.1021/jm500345q
日期:2014.6.12
reported which irreversibly tethers drug-like fragments to catalytic cysteines. We attached an electrophile to 100 fragments without significant alterations in the reactivity of the electrophile. A mass spectrometry assay discovered three nonpeptidic inhibitors of the cysteine protease papain. The identified compounds display the characteristics of irreversible inhibitors. The irreversible tethering system
报道了一种新的基于片段的药物发现方法,该方法不可逆地将类药物片段束缚在催化半胱氨酸上。我们将亲电试剂连接到 100 个片段上,而亲电试剂的反应性没有显着改变。质谱分析发现了半胱氨酸蛋白酶木瓜蛋白酶的三种非肽抑制剂。鉴定出的化合物显示出不可逆抑制剂的特征。不可逆的束缚系统也显示出特异性:三种鉴定出的木瓜蛋白酶抑制剂不与 UbcH7、USP08 或带有 GST 标签的人类鼻病毒 3C 蛋白酶共价反应。