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FEMS Microbiol Lett. 2005 Jan 15;242(2):287-95.

GeneChip expression analysis of the VqsR regulon of Pseudomonas aeruginosa TB.

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Clinical Research Group OE 6711, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany.


Two interlinked quorum sensing circuits, las and rhl, which control pathogenesis of Pseudomonas aeruginosa are further modulated by numerous regulators, including VqsR (virulence and quorum sensing regulator). High-density oligonucleotide microarrays were used to compare the global expression profile of a wild-type and VqsR mutant in ABC minimal medium. The expression of a large group of metabolic genes, ECF sigma factors as well as of many quorum-sensing genes previously not assigned to VqsR-regulon was found to be affected by the disruption of vqsR.

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