Similar Datasets
Project description:Quorum signal uptake is an indispensable part of quorum sensing regulations. The coperative regulation of uptake repressor and kinase precisely signale the cells for quorum sensing uptake and terminate the quorum sensing signal production. We use the DNA microarray to detail the E. coli quorum sensing uptake reuglations and related gene regulations. Keywords: specific growth
2007-11-02 | GSE9203 | GEO
Project description:Yersinia pestis, the etiological agent of plague, is able to sense cell density by quorum sensing. The function of quorum sensing in Y. pestis is not clear. Here, the process of quorum sensing was investigated by comparing transcript profiles when three quorum-sensing synthase genes are knocked out. Two strains, ∆pgm (pigmentation-negative) mutant R88 as treatment and quorum sensing null strain R115 with mutations (∆pgm, ∆ypeIR, ∆yspIR, and ∆luxS) as control, are used in this analysis.
2013-09-05 | GSE21911 | GEO
Project description:The etiologic agent of bubonic plague, Yersinia pestis, senses cell density-dependent chemical signals to synchronize transcription between cells of the population in a process named quorum sensing. Though the closely related enteric pathogen Y. pseudotuberculosis uses quorum sensing system to regulate motility, the role of YpeIR quorum sensing in Y. pestis has been unclear. YpeIR is one of the AHL quorum sensing system in Y. pestis. In this study we performed transcriptional profiling experiments to identify Y. pestis YpeIR quorum sensing regulated functions at 37°C.
2016-01-01 | GSE30341 | GEO
Project description:Quorum signal uptake is an indispensable part of quorum sensing regulations. The coperative regulation of uptake repressor and kinase precisely signale the cells for quorum sensing uptake and terminate the quorum sensing signal production. We use the DNA microarray to detail the E. coli quorum sensing uptake reuglations and related gene regulations. Experiment Overall Design: W3110 wild type and its isogenic mutants lsrR, lsrK's RNA samples were extracted and hybridized for Affymetrix array.
2008-06-17 | E-GEOD-9203 | biostudies-arrayexpress
Project description:The etiologic agent of bubonic plague, Yersinia pestis, senses cell density-dependent chemical signals to synchronize transcription between cells of the population in a process named quorum sensing. Though the closely related enteric pathogen Y. pseudotuberculosis uses quorum sensing system to regulate motility, the role of quorum sensing in Y. pestis has been unclear. In this study we performed transcriptional profiling experiments to identify Y. pestis quorum sensing regulated functions. Our analysis revealed that acyl-homoserine lactone based quorum sensing controls the expression of several metabolic functions. Maltose fermentation and the glyoxylate bypass are induced by acyl-homoserine lactone signaling. This effect was seen to be temperature conditional. Metabolism is unresponsive to quorum sensing regulation at mammalian body temperature, indicating a potential role for quorum sensing regulation of metabolism specifically during colonization of the flea vector. It is proposed that utilization of alternative carbon sources may enhance growth and/or survival during prolonged flea colonization, contributing to maintenance of plague in nature.
2016-01-01 | GSE29240 | GEO
Project description:Yersinia pestis is the etiology of plague that is able to sense cell density by quorum sensing. The function of quorum sensing in Y.pestis is not clear. Here, the process of quorum sensing was investigated by comparing transcript profiles when three quorum sensing synthase genes are knocked out. Two strains, ∆pgm (pigmentation-negative) mutant R88 as treatment and 3XQS mutant with mutation (∆pgm, ∆ypeIR, ∆yspIR, and ∆luxS) R115 as control are used in this analysis.
2016-01-01 | GSE20217 | GEO
Project description:Yersinia pestis, the etiological agent of plague, is able to sense cell density by quorum sensing. The function of quorum sensing in Y. pestis is not clear. Here, the process of autoinducer-2 (AI-2) quorum sensing was investigated by comparing transcript profiles when AI-2 quorum-sensing signal is added in to control. The strain Δpgm (pigmentation-negative) mutant was used as wild type.The control consisted of cells grown and treated under the same conditions without added signals.
2016-01-01 | GSE30237 | GEO
Project description:Yersinia pestis, the etiological agent of plague, is able to sense cell density by quorum sensing. The function of quorum sensing in Y. pestis is not clear. Here, the process of autoinducer-2 (AI-2) quorum sensing was investigated by comparing transcript profiles when AI-2 quorum-sensing signal is added in. The strain ∆pgm(pigmentation-negative) mutant R88 was used as wild type. The control consisted of cells grown and treated under the same conditions without added signals.
2013-09-05 | GSE22848 | GEO
Project description:A quorum sensing null mutant was compared with D. shibae wild-type in order to identify quorum sensing controlled traits in this organism. Samples were taken at different optical densities in the exponential phase and in the stationary phase in order to clarify if quorum sensing regulation is dependent on cell-densitiy
2012-11-03 | GSE42011 | GEO
Project description:Acyl-homoserine lactone (acyl-HSL) quorum sensing was first discovered in Vibrio fischeri where it serves as a key control element of the seven-gene luminescence (lux) operon. Since this initial discovery, other bacteria have been shown to control hundreds of genes by acyl-HSL quorum sensing. Until recently, it has been difficult to examine the global nature of quorum sensing in V. fischeri. However, the complete genome sequence of V. fischeri is now available and this has enabled us to use transcriptomics to identify quorum-sensing regulated genes and to study the quorum-controlled regulon of this bacterium. In this study, we used DNA microarray technology to identify over two-dozen V. fischeri genes regulated by the quorum sensing signal N-3-oxohexanoyl-L-homoserine lactone (3OC6-HSL). Keywords: Comparison of transcriptome profiles
2007-08-01 | GSE7485 | GEO