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ABSTRACT: Quorum sensing

PROVIDER: PRJNA495863 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8039480.fastq.gz	Fastqsanger.gz
	SRR8039490.fastq.gz	Fastqsanger.gz
	SRR8039500.fastq.gz	Fastqsanger.gz
	SRR8039510.fastq.gz	Fastqsanger.gz
	SRR8039520.fastq.gz	Fastqsanger.gz

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Project description:quorum sensing

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Expression profile for early stationary phase E. coli W3110 expression profile

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

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Transcriptional analysis of quorum sensing deficient in Yersinia pestis CO92 at 37°C

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.

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Transcriptional analysis of ypeIR mutation in Yersinia pestis at 37°C

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Transcription profiling of E. coli W3110 in early stationary phase

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Project description:Quorum sensing bacteria

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Yersinia pestis uses AHL-based quorum sensing to regulate metabolic functions likely to be important for flea colonization

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.

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Transcriptional analysis of quorum sensing null strain in Yersinia pestis CO92 at 30°C

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.

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Transcription analysis of AI-2 signal add in experiment in Yersinia pestis CO92 at 37°C

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

Transcriptional analysis of AI-2 treatment in Yersinia pestis at 30°C

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

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