GEO DataSets

(Submitter supplied) Fimbriae are important virulence traits that promote bacterial adhernece to surfaces. Here, we assessed whether fimbriae modulate gene expression using microarrays. We used microarrays to compare gene expression in wild-type of fimbrial deletion strains of EHEC

Organism:

Escherichia coli

Type:

Expression profiling by array

Platform:

GPL3154

3 Samples

Download data: CEL, CHP

(Submitter supplied) The cell cycle coordinates with growth to ensure suitable genome inheritance. The CsdA protein is a highly conserved, DEAD-box RNA helicase and assists RNA structural remodeling at low temperature. The absence of CsdA yields a severe growth defect manifested by increased doubling time, more extensive cell size, or slower colony growth at low temperature. Nevertheless, it is unknown how the lack of CsdA at low temperature affects the cell cycle and the causes of the yield of severe growth defect phenotypes. more...

Organism:

Escherichia coli

Type:

Expression profiling by array

Platform:

GPL3154

4 Samples

Download data: CEL

(Submitter supplied) We used microarray to identify the global gene expression profile of recombinant E.coli culture expressing repeating unit of the C. difficile toxin A (rARU) C-terminal region. Controlled condition batch runs were performed with E.coli expressing rARU at both restricted and unrestricted DO conditions for collecting samples of log and late-log phases at unrestricted and restricted DO.

Organism:

Escherichia coli

Type:

Expression profiling by array

Platform:

GPL3154

12 Samples

Download data: CEL

(Submitter supplied) Biocides are chemical compounds widely used in hospital settings for a variety of purposes, but mainly for disinfection. The chemical properties of a biocide, as well as the biocide concentration, influence which cellular targets are affected. Exposure of bacteria to residual concentrations of biocides could lead to development of increased resistance towards the biocide in use, as well as cross-resistance towards other antimicrobials, including antibiotics. more...

Organism:

Escherichia coli CFT073; Escherichia coli

Type:

Expression profiling by array

Platform:

GPL3154

15 Samples

Download data: CEL

(Submitter supplied) The aim of this study was to investigate the expressional changes profiles of the wildtype and recombinant Escherichia coli strain which contains an non-coding RNA nfiS from the nitrogen-fixing Pseudomonas stutzeri A1501 after hydrogen peroxide shock, so as to lay a theoretical foundation for further clarifying the mechanism of this ncRNA to enhance the resistance ability of E.coli to oxidative stress. more...

Organism:

Escherichia coli

Type:

Expression profiling by array

Platform:

GPL3154

6 Samples

Download data: CEL, CHP

(Submitter supplied) We used microarrays to study the changes in whole-genome expression profiles accompanying the evolution of one bacterial population propagated in glucose minimal medium for 20,000 generations.

Organism:

Escherichia coli B str. REL606; Escherichia coli

Type:

Expression profiling by array

Platform:

GPL3154

18 Samples

Download data

(Submitter supplied) Pathogens like E. coli O157:H7 are responsible for many outbreaks and can be found and survive in poor inorganic phosphate (Pi) environments. In E. coli the phosphate homeostasis is regulated by the Pst system and the two-component system PhoB/R. In a Δpst mutant, PhoB is constitutively activated and biofilm formation is increased. To understand how PhoB activation lead to biofilm increase, we compared the transcriptomes of EDL933 the WT strain and Δpst mutant both grown in MOPS Pi rich medium, using the Affymetrix GeneChip® E. more...

Organism:

Escherichia coli; Escherichia coli O157:H7 str. EDL933

Type:

Expression profiling by array

Platform:

GPL3154

6 Samples

Download data: CEL

(Submitter supplied) In response to low levels of magnesium (Mg2+), the PhoQP two component system induces the transcription of two convergent genes, one encoding a 31-amino acid protein denoted MgtS and the second encoding a small, regulatory RNA (sRNA) denoted MgrR. Previous studies showed that the MgtS protein interacts with and stabilizes the MgtA Mg2+ importer to increase intracellular Mg2+ levels, while the MgrR sRNA base pairs with the eptB mRNA thus affecting lipopolysaccharide modification. more...

Organism:

Escherichia coli; Escherichia coli str. K-12 substr. MG1655

Type:

Expression profiling by array

Platform:

GPL3154

4 Samples

Download data: CEL, CHP

(Submitter supplied) E. coli K-12 MG1655 was grown on M9 minimal media supplemented with 0.2% w/v glucose, fructose, or acetate. The goal of this study was to determine differentially expressed genes in the different media conditions.

Organism:

Escherichia coli

Type:

Expression profiling by array

Platform:

GPL3154

9 Samples

Download data: CEL

(Submitter supplied) Expression profiling of wild type E. coli K-12 strain MG1655 with exogenous glutathione (GSH) supplementation, sub-inhibitory ciprofloxacin concentration and GSH with inhibitory ciprofloxacin concentration. We used microarrays to detail the global gene expression program underlying ciprofloxacin exposure and glutathione mediated abrogation of ciprofloxacin's anti-bacterial action.

Organism:

Escherichia coli; Escherichia coli str. K-12 substr. MG1655

Type:

Expression profiling by array

Platform:

GPL3154

8 Samples

Download data: TXT, XLS

(Submitter supplied) This study examines stress responses following lethal induction of a MalE-LacZ hybrid protein

Organism:

Escherichia coli; Escherichia coli str. K-12 substr. MC4100

Type:

Expression profiling by array

Platform:

GPL3154

36 Samples

Download data: CEL

(Submitter supplied) Gene expression in E coli W3110 strains with either ybaO over-expression (W3110/pcutR) or ybaO deletion (W3110/ΔcutR) were measured with cysteine challenge.

Organism:

Escherichia coli

Type:

Expression profiling by array

Platform:

GPL3154

6 Samples

Download data: CEL

(Submitter supplied) RepA-WH1 is a synthetic bacterial prionoid, i.e., a protein that aggregates as amyloid in bacteria leading to cell death The purpose of this approach was to outline the pathways of cytotoxicity linked to RepA-WH1 expression from the set of genes induced/repressed in an Escherichia coli strain with reduced genome (MDS42)

Organism:

Escherichia coli; Escherichia coli K-12

Type:

Expression profiling by array

Platform:

GPL3154

18 Samples

Download data: CEL

(Submitter supplied) cAMP receptor protein (CRP, also known as the catabolite activator protein [CAP]) is arguably the best-studied of the global transcription factors of E coli. CRP alone is responsible for regulating at least 283 operons. Upon binding cAMP, the CRP dimer binds DNA and directly interacts with RNA polymerase (RNAP). At Class II promoters, CRP binds near position -41,5 relative to the transcription start site and contacts the amino-terminal domain of the RNAP α subunit (RNAPα-NTD). more...

Organism:

Escherichia coli; Escherichia coli K-12

Type:

Expression profiling by array

Platform:

GPL3154

32 Samples

Download data: CEL, CHP

(Submitter supplied) E. coli K-12 BW25113 persister cells generated via rifampicin pre-treatment relative to BW25113 wild-type stationary phase gene expression. Persister cells were generated following exposure to ampicillin 20 ug/mL.

Organism:

Escherichia coli

Type:

Expression profiling by array

Platform:

GPL3154

2 Samples

Download data: CEL, CHP

(Submitter supplied) Global regulation of the effects of deletion of phage cro gene in EHEC

Organism:

Escherichia coli

Type:

Expression profiling by array

Platform:

GPL3154

2 Samples

Download data: CEL

(Submitter supplied) AcrR is a known transcriptional repressor for AcrAB-TolC multidrug efflux system and mar-sox regulators. We used microarrays to investigate genome-wide target genes for AcrR. In the acrR deletion mutant, the transcription of genes for flagella and motility are significantly increased, indicating that AcrR plays a role in motility of E. coli.

Organism:

Escherichia coli

Type:

Expression profiling by array

Platform:

GPL3154

4 Samples

Download data: CEL, XLSX

(Submitter supplied) The production of lycopene in E. coli can be improved by mutated CRP.CRP is a well-known global transcription factor regulating the expression of more than 400 genes that belong to different functional groups of E. coli. During the accumulation of lycopene in E. coli, the engineered CRP alters the expression level of many genes, such as the genes belong to lycopene production pathway, which leads to the improved lycopene production. more...

Organism:

Escherichia coli

Type:

Expression profiling by array

Platform:

GPL3154

2 Samples

Download data: CEL, CHP

(Submitter supplied) APEC most often infect chickens, turkeys, ducks, and other avian species, and therefore pose a significant economic burden on the poultry industry worldwide. Few studies have analyzed the genome-wide transcriptional profile of APEC during infection in vivo. In this study, we examined the genome-wide transcriptional response of APEC O2 strain E058 in an in vivo chicken infection model to better understand the factors necessary for APEC colonization, growth, and survival in vivo. more...

Organism:

Escherichia coli; Escherichia coli APEC O2

Type:

Expression profiling by array

Platform:

GPL3154

5 Samples

Download data: CEL

(Submitter supplied) The results of this study would unravel the identity of genes that are differentially regulated during biofilm formation and establish whether the differentially regulated genes are related to increased resistance to antimicrobials and or virulence.

Organism:

Escherichia coli

Type:

Expression profiling by array

Platform:

GPL3154

9 Samples

Download data: CEL