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EspJ is a prophage-carried type III effector protein of attaching and effacing pathogens that modulates infection dynamics

Dahan, S., Wiles, S., La Ragione, R. M., Best, A., Woodward, M. J., Stevens, M. P., Shaw, R. K., Chong, Y., Knutton, S., Phillips, A. and Frankel, G. (2005) EspJ is a prophage-carried type III effector protein of attaching and effacing pathogens that modulates infection dynamics. Infection and Immunity, 73 (2). pp. 679-686. ISSN 0019-9567

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To link to this article DOI: 10.1128/iai.73.2.679-686.2005

Abstract/Summary

Enterohemorrhagic Escherichia coli, enteropathogenic E. coli, and Citrobacter rodentium are highly adapted enteropathogens that successfully colonize their host's gastrointestinal tract via the formation of attaching and effacing (A/E) lesions. These pathogens utilize a type III secretion system (TTSS) apparatus, encoded by the locus of enterocyte effacement, to translocate bacterial effector proteins into epithelial cells. Here, we report the identification of EspJ (E. coli-secreted protein J), a translocated TTSS effector that is carried on the 5' end of the cryptic prophage CP-933U. Infection of epithelial cells in culture revealed that EspJ is not required for A/E lesion activity in vivo and ex vivo. However, in vivo studies performed with mice demonstrated that EspJ possesses properties that influence the dynamics of clearance of the pathogen from the host's intestinal tract, suggesting a role in host survival and pathogen transmission.

Item Type:Article
Refereed:Yes
Divisions:No Reading authors. Back catalogue items
Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences > Food Microbial Sciences Research Group
ID Code:30068
Publisher:American Society for Microbiology

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