Reducing the Flexibility of Type II Dehydroquinase for Inhibition: A Fragment-Based Approach and Molecular Dynamics Study
作者:Antonio Peón、Adrián Robles、Beatriz Blanco、Marino Convertino、Paul Thompson、Alastair R. Hawkins、Amedeo Caflisch、Concepción González-Bello
DOI:10.1002/cmdc.201700396
日期:2017.9.21
the type II dehydroquinase from Helicobacter pylori. This enzyme, which is essential for the survival of this bacterium, is involved in the biosynthesis of aromatic amino acids. A computer‐aided fragment‐based protocol (ALTA) was first used to identify the aromatic fragments able to block the interface pocket that separates two neighboring enzyme subunits and is located at the active site entrance
使用多学科方法来鉴定和优化基于喹唑啉二酮的配体,该配体会降低幽门螺杆菌II型脱氢喹啉酶的底物覆盖环(催化环)的灵活性。该酶对于细菌的生存至关重要,它参与芳香族氨基酸的生物合成。首先使用计算机辅助基于片段的协议(ALTA)来识别能够阻断界面口袋的芳香片段,该界面口袋将两个相邻的酶亚基分开,并位于活性位点入口处。通过烯烃交叉复分解对其非芳族部分进行化学修饰,以及Seebach的手性合成原理的自我复制,使得开发了一种喹唑啉二酮衍生物,该衍生物会破坏催化环的可塑性,这对酶的催化循环至关重要。