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Journal of Bacteriology, February 2004, p. 1215-1219, Vol. 186, No. 4
0021-9193/04/$08.00+0     DOI: 10.1128/JB.186.4.1215-1219.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

InvB Is Required for Type III-Dependent Secretion of SopA in Salmonella enterica Serovar Typhimurium

Institute of Microbiology, ETH Zürich, 8092 Zürich, Switzerland

Received 2 September 2003/ Accepted 11 November 2003

The Salmonella effector protein SopA is translocated into host cells via the SPI-1 type III secretion system (TTSS) and contributes to enteric disease. We found that the chaperone InvB binds to SopA and slightly stabilizes it in the bacterial cytosol and that it is required for its transport via the SPI-1 TTSS.

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