Shigella applies molecular mimicry to subvert vinculin and invade host cells

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Shigella applies molecular mimicry to subvert vinculin and invade host cells

Shigella flexneri, the causative agent of bacillary dysentery, injects invasin proteins through a type III secretion apparatus upon contacting the host cell, which triggers pathogen internalization. The invasin IpaA is essential for S. flexneri pathogenesis and binds to the cytoskeletal protein vinculin to facilitate host cell entry. We report that IpaA harbors two vinculin-binding sites (VBSs)...

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Structural mimicry for vinculin activation by IpaA, a virulence factor of Shigella flexneri.

Invasion of epithelial cells by Shigella flexneri is characterized by cytoskeletal rearrangements of the host cell membrane, promoting internalization of the bacterium. The bacterial effector IpaA is injected into the epithelial cell by a type III secretion apparatus and recruits vinculin to regulate actin polymerization at the site of entry. We analysed the complex formed between a carboxy-ter...

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ژورنال

عنوان ژورنال: Journal of Cell Biology

سال: 2006

ISSN: 1540-8140,0021-9525

DOI: 10.1083/jcb.200605091