Characterization of Small-Molecule Scaffolds That Bind to the Shigella Type III Secretion System Protein IpaD.
Characterization of Small-Molecule Scaffolds That Bind to the Shigella Type III Secretion System Protein IpaD.
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DOI：
10.1002/cmdc.201700348
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发表时间：
2017-09-21
期刊：
影响因子：
3.4
通讯作者：
De Guzman RN
中科院分区：
文献类型：
--
作者：
Dey S;Anbanandam A;Mumford BE;De Guzman RN
Many pathogens such as Shigella and other bacteria assemble the type III secretion system (T3SS) nanoinjector to inject virulence proteins into their target cells to cause infectious diseases in humans. The rise of drug resistance among pathogens that rely on the T3SS for infectivity, plus the dearth of new antibiotics require alternative strategies in developing new antibiotics. The Shigella T3SS tip protein IpaD is an attractive target for developing anti-infectives because of its essential role in virulence and its exposure on the bacterial surface. Currently, the only known small molecules that bind to IpaD are bile salts sterols. Here, we identified four new small molecule scaffolds that bind to IpaD based on the methylquinoline, pyrrolidin-aniline, hydroxyindole, and morpholinoaniline scaffolds. NMR mapping revealed potential hotspots in IpaD for binding small molecules. These scaffolds can be used as building blocks in developing small molecule inhibitors of IpaD that could lead to new anti-infectives.
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