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Genome-scale reconstruction of the PurR regulon reveals its role in the adenine stimulon of Escherichia coli K-12 MG1655

ABSTRACT: Genome-scale reconstruction of the PurR regulon reveals its role in the adenine stimulon of Escherichia coli K-12 MG1655

PROVIDER: PRJNA136185 | ENA |

REPOSITORIES: ENA

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Genome-scale reconstruction of the PurR regulon reveals its role in the adenine stimulon of Escherichia coli K-12 MG1655

Project description:This SuperSeries is composed of the following subset Series: GSE26588: Transcriptome analysis of E. coli MG1655 GSE26589: ChIP-chip of E. coli K-12 MG1655 with antibody against PurR-8myc under various conditions. Refer to individual Series

2012-01-12 | E-GEOD-26591 | biostudies-arrayexpress

Transcriptome analysis of E. coli MG1655

Project description:Expression profiling of wild type and purR deletion strains of E. coli K-12 MG1655 under both M9 minimal media and addition of adenine.

2011-06-14 | GSE26588 | GEO

ChIP-chip of E. coli K-12 MG1655 with antibody against PurR-8myc under various conditions.

2011-06-14 | GSE26589 | GEO

Transcriptome analysis of E. coli MG1655

Project description:Expression profiling of wild type and purR deletion strains of E. coli K-12 MG1655 under both M9 minimal media and addition of adenine. An eight chip study with two different strains under two separate culture conditions.

2011-06-14 | E-GEOD-26588 | biostudies-arrayexpress

ChIP-chip of E. coli K-12 MG1655 with antibody against PurR-8myc under various conditions.

Project description:We integrated transcription factor binding regions and mRNA transcript abundance to elucidate the PurR regulon experimentally. To measure transcription factor binding at a genome scale, we employed a ChIP-chip method to derivative strains of E. coli K-12 MG1655 harboring PurR-8myc under various conditions. A four ChIP-chip study under two separate culture conditions. The high-density oligonucleotide tiling arrays used were consisted of 371,034 oligonucleotide probes spaced 25 bp apart (25-bp overlap between two probes) across the E. coli genome.

2011-06-14 | E-GEOD-26589 | biostudies-arrayexpress

Revealing the genome-scale transcriptional regulatory landscape of OmpR highlights its expanded regulatory roles and unexpected importance of narU under osmotic stress in Escherichia coli K-12 MG1655 [RNA-seq]

Project description:A transcription factor (TF), OmpR, plays a critical role in transcriptional regulation of the defense system for osmotic stress in bacteria. However, its full genome-wide regulatory potential is unknown. Here, we perform a genome-scale reconstruction of the OmpR regulon in Escherichia coli K-12 MG1655. Integrative data analysis reveals that a total of 37 genes in 24 transcription units (TUs) belong to OmpR regulon. Among them, 26 genes show more than two-fold changes in expression level under OmpR knock-out condition. We find that OmpR tends to regulate mostly membrane-located gene products of diverse fundamental biological processes, such as narU, ompX, and nuoN. Investigating co-regulation of entire set of genes regulated by other stress-response TFs unveils that they are surprisingly independently regulated by TF(s) responding to each stress. Additionally, detailed investigation of physiological roles of newly discovered OmpR regulon reveals that activation of narU encoding nitrate/nitrite transporter is a relatively unique strategy of E. coli K-12 MG1655 to significantly improve cellular tolerance toward osmotic stress.

2017-06-09 | GSE88980 | GEO

2017-06-09 | GSE88979 | GEO

Genome-scale reconstruction of the PurR regulon reveals its role in the adenine stimulon of Escherichia coli K-12 MG1655

Project description:This SuperSeries is composed of the SubSeries listed below.

2012-01-12 | GSE26591 | GEO

Genome-scale reconstruction of the sigma factor network in E. coli

Project description:We report the application of single-molecule-based sequencing technology for high-throughput profiling of transcription start sites for Escherichia coli under different conditions. By obtaining sequence from 5' RACE (rapid amplification of cDNA ends) followed by deep sequencing, we generated genome-wide TSS (transcription start site) maps for E. coli. This TSS-map was integrated with ChIP-chip data generated for 6 sigma factors in E. coli, resulting in reconstruction of sigma factor network in E. coli. Examination of transcription start sites by biological duplicates from E. coli for 3 different conditions

2014-02-05 | E-GEOD-46737 | biostudies-arrayexpress

Adenine effect on Enterohemorraghic E.coli

Project description:Previous experiments have shown that E. feacalis increases EHEC virulence by secreting adenine, this RNAseq aims to understand the molecular mechanism underlaying adenine role on EHEC

2024-05-01 | GSE244178 | GEO

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