Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Expression profile for higA mutant of Pseudomonas aeruginosa PA14

ABSTRACT: The previously uncharacterized proteins HigB (unannotated) and HigA (PA4674) of Pseudomonas aeruginosa PA14 were found to form a type II TA system in which antitoxin HigA masks the RNase activity of toxin HigB through direct binding. To determine the physiological role of HigB/HigA in P. aeruginosa, a whole-transcriptome experiment was performed for the higA antitoxin deletion mutant of the PA14 strain compared to the wild-type PA14 strain. The rationale was that for the strain that lacks the antitoxin, the effect of the toxin could be discerned due to enhanced activity of the toxin. Furthermore, toxin HigB reduces production of the virulence factors pyochelin, pyocyanin, swarming, and biofilm formation.

ORGANISM(S): Pseudomonas aeruginosa Pseudomonas aeruginosa PA14

PROVIDER: GSE74730 | GEO | 2016/11/04

SECONDARY ACCESSION(S): PRJNA301352

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

P. aeruginosa PA14 mutant PA4496 biofilm vs wild-type biofilm

Project description:P. aeruginosa PA14 mutant strain PA4496 expression in biofilm cells relative to PA14 wild-type strain expression in biofilm cells. All samples cultured in LB with glass wool

2018-02-14 | GSE24638 | GEO

NdpA2 & TprA regulon in PA14: ICE PAPI-1 transference induced (M0) vs Control (Tn38)

Project description:Transcriptional profiling of Pseudomonas aeruginosa PA14 comparing T4SS-GI induced biosynthesis M0 strain with control wild type phentoype Tn38 strain The PA14_59050-59120 locus was overexpressed through chromosomal insertion of ptac promoter within PA14_59030 gene.

2021-01-31 | GSE152141 | GEO

C. elegans gene expression in response to the pathogenic P. aeruginosa strain PA14.

Project description:Analysis of differential gene expression in C. elegans adults exposed to three different bacteria: E. coli strain OP50, wild-type P. aeruginosa PA14 and gacA mutant PA14. Samples were analyzed at 4 hours and 8 hours after exposure to the different bacteria. These studies identified C. elegans genes induced by pathogen infection. Keywords: Time course, response to pathogen infection

2007-02-08 | GSE5793 | GEO

P. aeruginosa PA14-WT vs pyrF mutant vs pyrF mutant w/uracil

Project description:Comparative transcriptome analyses of P. aeruginosa PA14 pyrF mutant with PA14 wild type, and with PA14 pyrF mutant with 1 mM uracil supplement and PA14 wild type with 10 mM uracil in biofilm cells. All samples were cultured in LB with glass wool at 37C for 7h. Keywords: Pseudomonas aeruginosa biofilm pyrF uracil

2008-11-12 | GSE9592 | GEO

Microarray for suspension cells of PA14 WT with and without NE (50 uM and 500 uM) for 7 h

Project description:It has been proposed that the gastro-intestinal tract environment containing high levels of neuroendocrine hormones is important for gut-derived P. aeruginosa infections. In this study, we report that the hormone norepinephrine increases P. aeruginosa PA14 growth, virulence factor production, invasion of HCT-8 epithelial cells, and swimming motility in a concentration-dependent manner. Transcriptome analysis of P. aeruginosa exposed to 500 µM, but not 50 µM, norepinephrine for 7 h showed that genes involved in the regulation of the virulence determinants pyocyanin, elastase, and Pseudomonas quinolone signal (PQS, 2-heptyl-3-hydroxy-4-quinolone) were up-regulated. The production of rhamnolipids, which are also important in P. aeruginosa infections, was significantly decreased on semi-solid surfaces, but not in planktonic cultures, upon exposure to norepinephrine. Swarming motility, a phenotype that is directly influenced by rhamnolipids, was also decreased upon 500 µM norepinephrine exposure. The increase in the transcriptional activation of lasR, but not that of rhlR, suggest that the effects of norepinephrine are mediated primarily through the las quorum sensing pathway. Together, our data strongly suggests that norepinephrine can play an important role in gut-derived infections by increasing the pathogenicity of P. aeruginosa PA14.

2009-08-27 | GSE13326 | GEO

Whole-genome microarray of Caenorhabditis elegans strains DA650 and RC301 exposed to Pseudomonas aeruginosa PA14

Project description:To gain insights into the mechanisms by which RC301 compensates for the deficiency in the NPR-1 controlled immune and behavioral responses of strain DA650, we determine the whole-genome expression profile of these two strains upon exposure to Pseudomonas aeruginosa strain PA14

2017-06-10 | GSE86431 | GEO

topA mutant of P. aeruginosa PA14

Project description:We have tested the effect of deletion of Topoisomerase I on genes transcription of the bacteria Pseudomonas. aeruginosa. Topoisomerase I is a conserved protein that modulate the topology state of the DNA from super-coiled to relaxed. To this end we have compared the transcription profile of a topA::GentR mutant to that of the wild-type strain. The topA mutant contains in topA gene a Mariner transposon with a gentamicin resistance cassette. It is part of the non-redundant mutant library of P. aeruginosa PA14 strains.

2011-12-21 | GSE24038 | GEO

NdpA2 & TprA regulon in PA14: ICE PAPI-1 transference induced (M0) vs PAPI-1 transference inactivated (M0-59060-stop)

Project description:Transcriptional profiling of Pseudomonas aeruginosa PA14 comparing T4SS-GI induced biosynthesis M0 strain with control T4SS-GI induced biosynthesis M0-59060-stop strain. The PA14_59050-59120 locus was overexpressed through chromosomal insertion of ptac promoter within PA14_59030 gene.

2021-01-31 | GSE152140 | GEO