Abstract:
:For many Gram-negative bacteria, like Brucella, the type IV secretion system (T4SS) has a critical role in bacterial virulence. In Brucella, the VirB T4SS permits the injection of bacterial effectors inside host cells, leading to subversion of signaling pathways and favoring bacterial growth and pathogenesis. The virB operon promoter is tightly regulated by a combination of transcriptional activators and repressors that are expressed according to the environmental conditions encountered by Brucella. Recent advances have shed light on the Brucella T4SS regulatory mechanisms and also its substrates. Characterization of the targets and functions of these translocated effectors is underway and will help understand the role of the T4SS in the establishment of a replication niche inside host cells.
journal_name
Curr Opin Microbioljournal_title
Current opinion in microbiologyauthors
Lacerda TL,Salcedo SP,Gorvel JPdoi
10.1016/j.mib.2012.11.005subject
Has Abstractpub_date
2013-02-01 00:00:00pages
45-51issue
1eissn
1369-5274issn
1879-0364pii
S1369-5274(12)00171-3journal_volume
16pub_type
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