TonB Is Required for Intracellular Growth and Virulence of Shigella dysenteriae

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TonB is required for intracellular growth and virulence of Shigella dysenteriae.

To assess the importance of TonB-dependent iron transport systems to growth of Shigella in vivo, a tonB mutant of Shigella dysenteriae was isolated and tested in cultured cells. The tonB mutant invaded epithelial cells, but did not form plaques in confluent monolayers of Henle cells, indicating an inability of this mutant to spread from cell to cell. The rate of intracellular multiplication of ...

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Potential virulence of viable but nonculturable Shigella dysenteriae type 1.

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TonB-dependent systems of uropathogenic Escherichia coli: aerobactin and heme transport and TonB are required for virulence in the mouse.

The uropathogenic Escherichia coli strain CFT073 has multiple iron acquisition systems, including heme and siderophore transporters. A tonB mutant derivative of CFT073 failed to use heme as an iron source or to utilize the siderophores enterobactin and aerobactin, indicating that transport of these compounds in CFT073 is TonB dependent. The TonB(-) derivative showed reduced virulence in a mouse...

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The Specificity of the Agglutinin Reaction for Shigella dysenteriae: II. Agglutinin Absorption Relationships between Shigella dysenteriae and Escherichia coli.

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Survival of Shigella dysenteriae on fomites

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ژورنال

عنوان ژورنال: Infection and Immunity

سال: 2000

ISSN: 0019-9567,1098-5522

DOI: 10.1128/iai.68.11.6329-6336.2000