GEO DataSets

(Submitter supplied) Cell-surface signaling is a sophisticated regulatory mechanism used by gram-negative bacteria to sense signals from outside the cell and transmit them into the cytoplasm. This regulatory system consists of an outer membrane-localized TonB-dependent receptor (TonB-dependent transducer), a cytoplasmic membrane-localized anti-sigma factor and an extracytoplasmic function (ECF) sigma factor. By microarray analysis we have identified the regulons of four novel P. more...

Organism:

Pseudomonas aeruginosa

Type:

Expression profiling by array

Platform:

GPL84

8 Samples

Download data: CEL, CHP

(Submitter supplied) Next to the two-component and quorum sensing systems, cell-surface signaling (CSS) has been recently identified as an important regulatory system in Pseudomonas aeruginosa. CSS senses signals from outside the cell and transmits them into the cytoplasm. It consists of a TonB-dependent outer membrane receptor, a cytoplasmic membrane-localized sigma factor regulator (or anti-sigma factor), and an extracytoplasmic function (ECF) sigma factor. more...

Organism:

Pseudomonas aeruginosa

Type:

Expression profiling by array

Platform:

GPL84

4 Samples

Download data: CEL, CHP

(Submitter supplied) PhyR is an unusual type of response regulator consisting of a receiver domain and an extracytoplasmic function (ECF) sigma factor-like domain. It was recently described as a master regulator of general stress response in Methylobacterium extorquens. Orthologues of this regulator are present in essentially all free-living Alphaproteobacteria. In most of them, phyR is genetically closely linked to a gene encoding an ECF sigma factor. more...

Organism:

Bradyrhizobium diazoefficiens USDA 110; Bradyrhizobium japonicum

Type:

Expression profiling by array

Platform:

GPL3401

18 Samples

Download data: CEL, CHP

(Submitter supplied) Virulence factor production and the development of biofilms in Pseudomonas aeruginosa have been shown to be regulated by two hierarchically organised quorum sensing (QS) systems via small acyl-homoserine lactone (AHL) signal molecules. Recently, a third bacterial signal molecule, the Pseudomonas quinolone signal (PQS), has been identified, which positively regulates a subset of genes dependent on the QS systems. more...

Organism:

Pseudomonas aeruginosa PAO1; Pseudomonas aeruginosa

Type:

Expression profiling by array

Dataset:

GDS2764

Platform:

GPL84

12 Samples

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Analysis of Pseudomonas aeruginosa cells treated for up to 20 hours with 3,4-(di)hydroxy-heptyl-quinoline (PQS), a bacterial intercellular signaling molecule. Results provide insight into the role of PQS in the bacterial communication system termed quorum sensing.

Organism:

Pseudomonas aeruginosa; Pseudomonas aeruginosa PAO1

Type:

Expression profiling by array, count, 2 agent, 3 time sets

Platform:

GPL84

Series:

GSE3836

12 Samples

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(Submitter supplied) Polyamines (putrescine, spermidine, and spermine) are major organic polycations essential for a wide spectrum of cellular processes. The cells require mechanisms to maintain homeostasis of intracellular polyamines to prevent otherwise severe adverse effects. We performed a detailed transcriptome profile analysis of P. aeruginosa in response to agmatine and putrescine with an emphasis in polyamine catabolism. more...

Organism:

Pseudomonas aeruginosa

Type:

Expression profiling by array

Platform:

GPL84

6 Samples

Download data: CEL, CHP

(Submitter supplied) Pure cultures of ammonia oxidizing bacterium, Nitrosomonas europaea, are exposed to cyanide in pseudo-steady state batch reactor in presence of ammonia. Nitrosomonas europaea are generally regarded as the most sensitive organism to various inhibitors commonly encountered in the wastewater treatment plants (WWTP). To find stress genes of Nitrosomonas europaea to cyanide known as inhibitor of respiratory process, whole-genome transcript response to cyanide was determined in this research using microarray and qRT-PCR. more...

Organism:

Nitrosomonas europaea

Type:

Expression profiling by array

Platform:

GPL4617

6 Samples

Download data: CEL

(Submitter supplied) Bacterial gene expression is controlled by modifying the promoter affinity of the RNA polymerase (RNAP). This control occurs through the substitution of the RNAP σ subunit and by the interaction with transcription factors. The pathogen Pseudomonas aeruginosa contains several σ factors, including σVreI. This protein belongs to the extracytoplasmic function group of the σ70 family. Expression and activity of σECFs are tightly regulated and only occur in response to specific signals. more...

Organism:

Pseudomonas aeruginosa

Type:

Expression profiling by high throughput sequencing

Platform:

GPL21297

2 Samples

Download data: DIFF, TXT, XLS

(Submitter supplied) Gene regulation via transcription factors influences the metabolic, adaptive and pathogenic capabilities of the organism. We report the transcriptomes of the mutants of six major P. aeruginosa PA14 trancription factors - RhlR, LasR, Anr, GacA, FleQ and CbrB.

Organism:

Pseudomonas aeruginosa

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL18286 GPL18287

14 Samples

Download data: CSV, PDF, TXT

(Submitter supplied) Analysis of a SigX knockout mutant of Pseudomonas aeruginosa H103 strain in LB.

Organism:

Pseudomonas aeruginosa

Type:

Expression profiling by array

Platform:

GPL84

6 Samples

Download data: CEL