Institute of Infection, Immunity, and Inflammation, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, Scotland, United Kingdom.
J Biol Chem. 2011 Aug 26;286(34):29922-31. doi: 10.1074/jbc.M111.233858. Epub 2011 Jul 1.
A class of anti-virulence compounds, the salicylidene acylhydrazides, has been widely reported to block the function of the type three secretion system of several Gram-negative pathogens by a previously unknown mechanism. In this work we provide the first identification of bacterial proteins that are targeted by this group of compounds. We provide evidence that their mode of action is likely to result from a synergistic effect arising from a perturbation of the function of several conserved proteins. We also examine the contribution of selected target proteins to the pathogenicity of Yersinia pseudotuberculosis and to expression of virulence genes in Escherichia coli O157.
一类抗毒化合物,即水杨醛酰腙,已被广泛报道通过一种先前未知的机制阻断几种革兰氏阴性病原体的 III 型分泌系统的功能。在这项工作中,我们首次鉴定了这组化合物的靶细菌蛋白。我们提供的证据表明,它们的作用模式可能是由于几种保守蛋白功能受到干扰而产生协同效应的结果。我们还研究了选定靶蛋白对假结核耶尔森氏菌致病性和大肠杆菌 O157 中毒力基因表达的贡献。