GEO DataSets

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

Organism:

Mycobacterium tuberculosis

Type:

Expression profiling by array

Platform:

GPL4057

33 Samples

Download data: GPR

(Submitter supplied) Sigma factor E (SigE) controls the expression of genes that are essential for Mtb virulence. In this work, we have identified the SigE regulon during infection of macrophages Our results indicate that SigE regulates the expression of genes involved in the maintenance of Mtb cell envelope integrity and function (i.e., detoxification and secretion). Keywords: strains comparison

Organism:

Mycobacterium tuberculosis

Type:

Expression profiling by array

Platform:

GPL4057

23 Samples

Download data: GPR

(Submitter supplied) During lung infection Mycobacterium tuberculosis (Mtb) resides in macrophages and subverts the bactericidal mechanisms of these professional phagocytes. In this work we have analyzed by DNA microarray technique the global transcription profile of Mtb infecting primary human macrophages in order to identify putative bacterial pathogenic factors that can be relevant for the intracellular survival of Mtb. more...

Organism:

Mycobacterium tuberculosis

Type:

Expression profiling by array

Platform:

GPL4057

11 Samples

Download data: GPR

(Submitter supplied) In previously published work, we identified three Mycobacterium tuberculosis sigma (s) factor genes responding to heat shock (sigB, sigE and sigH ). Two of them (sigB and sigE ) also responded to SDS exposure. As these responses to stress suggested that the s factors encoded by these genes could be involved in pathogenicity, we are studying their role in physiology and virulence. In this work, we characterize a sigE mutant of M. more...

Organism:

Mycobacterium tuberculosis

Type:

Expression profiling by array

Platform:

GPL2787

15 Samples

Download data: TXT

(Submitter supplied) Like other bacterial species, Mycobacterium tuberculosis has multiple sigma (s) factors encoded in its genome. In previously published work, we and others have shown that mutations in some of these transcriptional activators render M. tuberculosis sensitive to various environmental stresses and, in some cases, cause attenuated virulence phenotypes. In this paper, we characterize a M. tuberculosis mutant lacking the ECF s factor sigma-H. more...

Organism:

Mycobacterium tuberculosis

Type:

Expression profiling by array

Platform:

GPL2787

15 Samples

Download data: TXT

(Submitter supplied) The innate mechanisms used by Mycobacterium tuberculosis to persist during periods of non-proliferation are central to understanding the physiology of the bacilli during latent disease. We have used whole genome expression profiling to expose adaptive mechanisms initiated by M. tuberculosis in two common models of M. tuberculosis non-proliferation. The first of these models was a standard growth curve in which gene expression changes were followed from exponential growth through the transition to stationary phase. more...

Organism:

Mycobacterium tuberculosis

Type:

Expression profiling by array

Platform:

GPL5714

54 Samples

Download data: TXT

(Submitter supplied) Comparing transciptional profile of a M. smegmatis mc2155 ΔsigF strain and wild type (control) in in vitro culture at two time points (exponential phase and stationary phase) for identification of SigF-dependent genes.

Organism:

Mycolicibacterium smegmatis

Type:

Expression profiling by array

Platform:

GPL5862

8 Samples

Download data: TXT

(Submitter supplied) The numerous sigma factors present in Mycobacterium tuberculosis (MTB) are indicative of adaptability to different environmental conditions. In this report we describe the sigma factor B (sigB) regulon and the phenotypes of a MTB sigB mutant strain exposed to different stresses like SDS and Diamide. This experiment set compares expression profiles between H37Rv wild type and H37Rv sigB null mutant as well as under different stress conditions. more...

Organism:

Mycobacterium tuberculosis

Type:

Expression profiling by array

Platform:

GPL8523

36 Samples

Download data

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

Organism:

Thermus thermophilus HB8

Type:

Expression profiling by array

Platform:

GPL4902

12 Samples

Download data: CEL

(Submitter supplied) We observed the expression profile of the total mRNA of TTHB212 deletion mutant of Thermus thermophilus HB8 strain grown in a rich (TR) medium at 70°C compared with that of wild type. Keywords: cell type comparison

Organism:

Thermus thermophilus HB8

Type:

Expression profiling by array

Platform:

GPL4902

6 Samples

Download data: CEL

(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 japonicum; Bradyrhizobium diazoefficiens USDA 110

Type:

Expression profiling by array

Platform:

GPL3401

18 Samples

Download data: CEL, CHP

(Submitter supplied) The microarrays were subjected to two-color hybridization using Cy5 and Cy3 dyes incorporated in the cDNAs synthesized from total RNA samples of strains. We compared each gene’s transcription level between the wild-type (WT) strain 13 (labeled by Cy5) and the VirR-mutant strain (TS133) or VR-RNA-mutant strain (TS140) (both labeled by Cy3) on a single DNA microarray. Keywords: gene regulation in time course

Organism:

Clostridium perfringens str. 13

Type:

Expression profiling by array

Platform:

GPL7332

6 Samples

Download data: TXT

(Submitter supplied) DNA Microarray based comparison of M. tuberculosis and its isogenic delta-sigmaH mutant for an extended period of time, using a diamide-stress and removal strategy (post-diamide stress or PDS) Raw data has been requested of, but not provided by, the submitter.

Organism:

Mycobacterium tuberculosis

Type:

Expression profiling by array

Platform:

GPL8382

12 Samples

Download data

(Submitter supplied) The purpose of this study was to examine how ethoxzolamide modulates gene M. tuberculosis gene expression at acidic pH. We observed that ethoxzolamide downregulates genes of the PhoPR regulon.

Organism:

Mycobacterium tuberculosis

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17879

8 Samples

Download data: TXT

(Submitter supplied) We used DNA microarrays to define the M. tuberculosis FurB regulon. For this porpouse we constructed a M. tuberculosis strain where furB was disrupted and its transcriptional profile was compared on DNA microarray with the transcriptional profile of its parental strain (H37Rv). A total of 32 genes included in 16 putative transcription units were shown to be up-regulated in the mutant relative to H37Rv. more...

Organism:

Mycobacterium tuberculosis

Type:

Expression profiling by array

Platform:

GPL4057

6 Samples

Download data

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

Organism:

Mycobacterium tuberculosis; Mycobacterium tuberculosis H37Rv

Type:

Genome binding/occupancy profiling by genome tiling array; Expression profiling by genome tiling array

Platforms:

GPL15091 GPL15144

18 Samples

Download data: TXT

(Submitter supplied) The genome wide transcriptome analysis to identify the M.tuberculosis sigma factor Rv3286c (SigF) dependent transcripts as well as Pristimaycin induced transcripts

Organism:

Mycobacterium tuberculosis; Mycobacterium tuberculosis H37Rv

Type:

Expression profiling by genome tiling array

Platform:

GPL15144

14 Samples

Download data: TXT

(Submitter supplied) The genome wide ChIP-on-chip analysis to identify the DNA binding sites for the M.tuberculosis sigma factor Rv3286c (SigF)

Organism:

Mycobacterium tuberculosis; Mycobacterium tuberculosis H37Rv

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL15091

4 Samples

Download data: TXT

(Submitter supplied) Using a deletion mutant lacking portions of the response regulator, MprA, and the histidine kinase, MprB, we demonstrated by DNA microarrays that MprAB activates sigE and sigB under SDS stress and during logarithmic growth. Keywords: effects of 0.05% SDS on Mtb gene expression

Organism:

Mycobacterium tuberculosis

Type:

Expression profiling by array

Platform:

GPL4057

24 Samples

Download data: GPR

(Submitter supplied) Multi-drug resistance and latent infection are two major issues in current tuberculosis (TB) control and management. Capreomycin is an important drug used for TB with multi-drug resistance. A recent study also indicates that this drug possesses unique bactericidal activity against non-replicating TB bacilli among known anti-TB drugs. Thus, there is an urgent need for investigating the full-spectrum action of capreomycin. more...

Organism:

Mycobacterium tuberculosis; Mycobacterium tuberculosis H37Rv

Type:

Expression profiling by array

Dataset:

GDS2677

Platform:

GPL4519

4 Samples

Download data: CEL