Discovery and validation of 2-styryl substituted benzoxazin-4-ones as a novel scaffold for rhomboid protease inhibitors
作者:Parul Goel、Thorsten Jumpertz、Anežka Tichá、Isabella Ogorek、David C. Mikles、Martin Hubalek、Claus U. Pietrzik、Kvido Strisovsky、Boris Schmidt、Sascha Weggen
DOI:10.1016/j.bmcl.2018.02.017
日期:2018.5
against GlpG but not against the soluble serine protease α-chymotrypsin. Furthermore, mass spectrometry analysis demonstrated covalent modification of the catalytic residue Ser201, corroborating the predicted mechanism of inhibition and the formation of an acyl enzyme intermediate. In conclusion, 2-styryl substituted benzoxazinones are a novel rhomboid inhibitor scaffold with ample opportunity for optimization
菱形是膜内丝氨酸蛋白酶,在从古细菌到人类的生物中具有多种生理功能。晶体结构分析已经提供了对催化机理的详细理解,并且菱形化合物已经涉及各种疾病。不幸的是,特定菱形抑制剂的设计落后了,并且先前描述的小分子抑制剂显示出不足的效力和/或选择性。使用计算机辅助方法,我们专注于发现负债减少的新型脚手架,以及可能出现广泛的结构变化。与大肠杆菌菱形GlpG的对接研究表明,2-苯乙烯基取代的苯并恶嗪酮可能包含新型菱形抑制剂。蛋白酶体外分析证实2-苯乙烯基取代的苯并恶嗪酮对GlpG具有活性,但对可溶性丝氨酸蛋白酶α-胰凝乳蛋白酶没有活性。此外,质谱分析表明催化残基Ser201的共价修饰,证实了预期的抑制机理和酰基酶中间体的形成。总之,2-苯乙烯基取代的苯并恶嗪酮是一种新型的菱形抑制剂骨架,具有充分的优化机会。