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EMBO Rep. 2008 Aug;9(8):735-41. doi: 10.1038/embor.2008.131. Epub 2008 Jul 11.

The type VI secretion toolkit.

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1
Laboratoire d'Ingénierie des Systèmes Macromoléculaires, IBSM, Centre National de la Recherche Scientifique, Marseille, France. cascales@ibsm.cnrs-mrs.fr

Abstract

Bacterial secretion systems are macromolecular complexes that release virulence factors into the medium or translocate them into the target host cell. These systems are widespread in bacteria allowing them to infect eukaryotic cells and survive or replicate within them. A new secretion system, the type VI secretion system (T6SS), was recently described and characterized in several pathogens. Genomic data suggest that T6SS exist in most bacteria that come into close contact with eukaryotic cells, including plant and animal pathogens. Many research groups are now investigating the underlying mechanisms and the way in which the effector proteins translocated through this machine subvert host defences. This review provides an overview of our current knowledge about type VI secretion, focusing on gene regulation, components of the secretion machine, substrate secretion and the cellular consequences for the host cell.

PMID:
18617888
PMCID:
PMC2515208
DOI:
10.1038/embor.2008.131
[Indexed for MEDLINE]
Free PMC Article
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