Hydantoin analogs inhibit the fully assembled ClpXP protease without affecting the individual peptidase and chaperone domains
作者:Christian Fetzer、Vadim S. Korotkov、Stephan A. Sieber
DOI:10.1039/c9ob01339c
日期:——
Proteolysis mediated by ClpXP is a crucial cellular process linked to bacterial pathogenesis. The development of specific inhibitors has largely focused on ClpP. However, this focus was challenged by a recent finding showing that conformational control by ClpX leads to a rejection of ClpP binders. Thus, we here follow up on a hit molecule from a high throughput screen performed against the whole ClpXP complex
ClpXP介导的蛋白水解是与细菌发病机理相关的关键细胞过程。特异性抑制剂的开发主要集中在ClpP上。但是,最近的发现表明ClpX的构象控制导致ClpP结合蛋白被排斥,这一挑战受到了挑战。因此,我们在此跟踪了针对整个ClpXP复合物的高通量筛选中的命中分子,并证明了高效稳定的抑制作用是可能的。进一步的研究表明,该小分子与ClpP结合而不影响其活性。同样,该分子不抑制ClpX,并且在结合后保留ClpXP的整体寡聚状态。结构活性关系研究证实了该分子所有三个部分的结构限制,表明结合到一个确定的立体特异性口袋中。