GEO DataSets

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Escherichia coli; Escherichia coli K-12

Type:

Expression profiling by array

Platform:

GPL534

20 Samples

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(Submitter supplied) Escherichia coli strains MG1655 and an isogenic hmp::Tn5 mutant were grown in a New Brunswick Scientific Bioflow III Biofermentor under continuous culture (chemostat) conditions.. Cells were grown in defined media containing 8 mM glycerol as the sole and limiting source of energy and carbon. The working volume was 1 litre, and the dilution rate 0.1 h-1. For aerobic growth, the air-flow rate was 1 l/min, and the dissolved oxygen tension was maintained at 40% air saturation by measuring oxygen dissolved in the culture using a Broadley James D140 OxyProbe® electrode and automated adjustment of stirring rate. more...

Organism:

Escherichia coli K-12; Escherichia coli

Type:

Expression profiling by array

Platform:

GPL534

4 Samples

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(Submitter supplied) Escherichia coli strains MG1655 and an isogenic norR::Tn5 mutant were grown in a New Brunswick Scientific Bioflow III Biofermentor under continuous culture (chemostat) conditions.. Cells were grown in defined media containing 8 mM glycerol as the sole and limiting source of energy and carbon. The working volume was 1 litre, and the dilution rate 0.1 h-1. For aerobic growth, the air-flow rate was 1 l/min, and the dissolved oxygen tension was maintained at 40% air saturation by measuring oxygen dissolved in the culture using a Broadley James D140 OxyProbe® electrode and automated adjustment of stirring rate. more...

Organism:

Escherichia coli; Escherichia coli K-12

Type:

Expression profiling by array

Platform:

GPL534

4 Samples

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(Submitter supplied) Escherichia coli strain MG1655 was grown in a New Brunswick Scientific Bioflow III Biofermentor under continuous culture (chemostat) conditions. Cells were grown in defined media containing 54 mM glycerol as the sole and limiting source of energy and carbon. The working volume was 1 litre, and the dilution rate 0.1 h-1. In order to establish anaerobic growth, nitrogen was sparged through the chemostat medium prior to inoculation and throughout the course of the experiment at a rate of 0.2 l/min. more...

Organism:

Escherichia coli; Escherichia coli K-12

Type:

Expression profiling by array

Platform:

GPL534

4 Samples

Download data

(Submitter supplied) Escherichia coli strain MG1655 was grown in a New Brunswick Scientific Bioflow III Biofermentor under continuous culture (chemostat) conditions. Cells were grown in defined media containing 8 mM glycerol as the sole and limiting source of energy and carbon. The working volume was 1 litre, and the dilution rate 0.1 h-1. For aerobic growth, the air-flow rate was 1 l/min, and the dissolved oxygen tension was maintained at 40% air saturation by measuring oxygen dissolved in the culture using a Broadley James D140 OxyProbe® electrode and automated adjustment of stirring rate. more...

Organism:

Escherichia coli; Escherichia coli K-12

Type:

Expression profiling by array

Platform:

GPL534

4 Samples

Download data

(Submitter supplied) Escherichia coli strain MG1655 was grown in a New Brunswick Scientific Bioflow III Biofermentor under continuous culture (chemostat) conditions. Cells were grown in defined media containing 54 mM glycerol as the sole and limiting source of energy and carbon. The working volume was 1 litre, and the dilution rate 0.2 h-1. In order to establish anaerobic growth, nitrogen was sparged through the chemostat medium prior to inoculation and throughout the course of the experiment at a rate of 0.2 l/min. more...

Organism:

Escherichia coli; Escherichia coli K-12

Type:

Expression profiling by array

Platform:

GPL534

4 Samples

Download data

(Submitter supplied) Escherichia coli strain MG1655 was grown in a New Brunswick Scientific Bioflow III Biofermentor under continuous culture (chemostat) conditions. Cells were grown in defined media containing 54 mM glycerol as the sole and limiting source of energy and carbon. The working volume was 1 litre, and the dilution rate 0.2 h-1. For aerobic growth, the air-flow rate was 1 l/min, and the dissolved oxygen tension was maintained at 40% air saturation by measuring oxygen dissolved in the culture using a Broadley James D140 OxyProbe® electrode and automated adjustment of stirring rate. more...

Organism:

Escherichia coli; Escherichia coli K-12

Type:

Expression profiling by array

Platform:

GPL534

4 Samples

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(Submitter supplied) This project used transcriptomic analysis of the S-nitrosoglutathione (GSNO) response in E. coli, and associated regulatory mutants, to identified the molecular targets of and response to GSNO during aerobic growth in minimal media. Keywords: Comparative genomic response

Organism:

Escherichia coli

Type:

Expression profiling by array

Platform:

GPL5113

40 Samples

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(Submitter supplied) The fumarate and nitrate reductase regulator protein, FNR, is a global transcription factor that regulates major biochemical changes as Escherichia coli adapts from aerobic to anaerobic growth. The ability of an fnr mutant to grow anaerobically in the presence of trimethylamine-N-oxide (TMAO) as the terminal electron acceptor was exploited in microarray experiments designed to determine a minimum number of Escherichia coli K-12 MG1655 operons that are regulated directly by FNR. more...

Organism:

Escherichia coli

Type:

Expression profiling by array

Platforms:

GPL3051 GPL1246

55 Samples

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(Submitter supplied) Successful pathogens must be able to protect themselves against reactive nitrogen species generated either as part of host defence mechanisms, or as products of their own metabolism. The regulatory protein, NsrR (a member of the Rrf2 family of transcription factors), plays key roles in this stress response. Microarray analysis was carried out to reveal the regulon of NsrR. Keywords: Response to repressor titration and different growth conditions

Organism:

Escherichia coli

Type:

Expression profiling by array

Platform:

GPL3051

12 Samples

Download data: GPR

(Submitter supplied) Transcriptional profiling of P. gingivalis cells comparing cells grown in anaerobic conditions to cells grown in anaerobic conditions and exposed to nitrite and to GSNO.

Organism:

Porphyromonas gingivalis

Type:

Expression profiling by array

Platform:

GPL15605

2 Samples

Download data: GPR

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Campylobacter jejuni subsp. jejuni NCTC 11168 = ATCC 700819; Campylobacter jejuni

Type:

Expression profiling by array

Platform:

GPL532

5 Samples

Download data: TXT

(Submitter supplied) Batch cultures of Wild-type C. jejuni NCTC 11168 were grown in 200 ml volumes of Mueller-Hinton broth in 250 ml baffled flasks. Microaerophilic conditions were generated using a MACS-VA500 microaerophilic work station (10 % Oxygen, 10 % Carbon dioxide, 80 % Nitrogen) from Don Whitley Scientific, Ltd which also maintained the growth temperature at 42 ºC. When mid-exponential phase was reached 0.010 mM NOC-5 & NOC-7 was added to one of the cultures. more...

Organism:

Campylobacter jejuni subsp. jejuni NCTC 11168 = ATCC 700819; Campylobacter jejuni

Type:

Expression profiling by array

Platform:

GPL532

4 Samples

Download data: TXT

(Submitter supplied) Two batch cultures of Wild-type C. jejuni NCTC 11168 were grown in 100 ml volumes of Mueller-Hinton broth in 250 ml baffled flasks. Microaerophilic conditions were generated using a MACS-VA500 microaerophilic work station (10 % Oxygen, 10 % Carbon dioxide, 80 % Nitrogen) from Don Whitley Scientific, Ltd which also maintained the growth temperature at 42 ºC. When mid-exponential phase was reached 0.010 mM NOC-5 & NOC-7 was added to one of the cultures. more...

Organism:

Campylobacter jejuni; Campylobacter jejuni subsp. jejuni NCTC 11168 = ATCC 700819

Type:

Expression profiling by array

Platform:

GPL532

1 Sample

Download data: TXT

(Submitter supplied) Escherichia coli is a metabolically versatile bacterium that is able to grow in the presence and absence of oxygen. Several previous transcript-profiling experiments have compared separate anaerobic and aerobic cultures. Here, for the first time, the process of adaptation was investigated by determining changes in transcript profiles when anaerobic steady-state cultures were perturbed by the introduction of air. more...

Organism:

Escherichia coli; Escherichia coli K-12

Type:

Expression profiling by array

Dataset:

GDS2364

Platform:

GPL534

4 Samples

Download data: TXT

Analysis of anaerobic steady-state cultures at various time points up to 1 hour following perturbation by introduction of air. Results provide insight into the molecular dynamics underlying the adaptation to aerobic growth.

Organism:

Escherichia coli; Escherichia coli K-12

Type:

Expression profiling by array, log2 ratio, 4 time sets

Platform:

GPL534

Series:

GSE4735

4 Samples

Download data: TXT

(Submitter supplied) Salmonella enterica var. Typhimurium (S. Typhimurium) is a Gram-negative, facultative intracellular pathogen that infects the intestinal tracts of humans and animals. In the host, S. Typhimurium encounters a wide range of oxygen concentrations going from oxic conditions in the stomach to near anoxic conditions in the distal sigmoid colon-rectal junction. In Escherichia coli, FNR (Fumarate Nitrate Reductase) is one of the main regulatory proteins involved in oxygen sensing and in controlling the transcription of the genes required for the aerobic/anaerobic transition.. more...

Organism:

Salmonella enterica subsp. enterica serovar Typhimurium; Salmonella

Type:

Expression profiling by array

Platform:

GPL1835

6 Samples

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(Submitter supplied) DNA microarray analysis was employed to investigate the transcriptome response to nitrosative stress in a non-denitrifying facultative photosynthetic bacterium Rhodobacter sphaeroides 2.4.1. We focused on the role played by a nitric oxide-response transcriptional regulator NnrR in the response. The transcriptome profiles of R. sphaeroides 2.4.1 and its nnrR mutant before and after exposure to nitrosating agents S-nitrosoglutathione (GSNO) or sodium nitroprusside (SNP) under semiaerobic conditions were analyzed.

Organism:

Cereibacter sphaeroides 2.4.1

Type:

Expression profiling by array

Platform:

GPL162

12 Samples

Download data: CEL