The role of Rab GTPases in the transport of vacuoles containing Legionella pneumophila and Coxiella burnetii
- PMID: 23176480
- DOI: 10.1042/BST20120167
The role of Rab GTPases in the transport of vacuoles containing Legionella pneumophila and Coxiella burnetii
Abstract
Intracellular pathogens survive in eukaryotic cells by evading a variety of host defences. To avoid degradation through the endocytic pathway, intracellular bacteria must adapt their phagosomes into protective compartments that promote bacterial replication. Legionella pneumophila and Coxiella burnetii are Gram-negative intracellular pathogens that remodel their phagosomes by co-opting components of the host cell, including Rab GTPases. L. pneumophila and C. burnetii are related phylogenetically and share an analogous type IV secretion system for delivering bacterial effectors into the host cell. Some of these effectors mimic eukaryotic biochemical activities to recruit and modify Rabs at the vacuole. In the present review, we cover how these bacterial species, which utilize divergent strategies to establish replicative vacuoles, use translocated proteins to manipulate host Rabs, as well as exploring which Rabs are implicated in vacuolar biogenesis in these two organisms.
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