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TranscriptomicsA novel extracytoplasmic function (ECF) sigma factor regulates virulence in Pseudomonas aeruginosa
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 ...
ORGANISM(S): Pseudomonas aeruginosa 
2009-04-21 | E-GEOD-15697 | biostudies-arrayexpress
MetabolomicsEnhanced fatty acid synthesis by Sigma28 in stringent responses contributes to multidrug resistance and biofilm formation in Helicobacter pylori

The metabolism of bacteria is closely associated with antibiotic resistance, yet the role of metabolism in the resistance of Helicobacter pylori remains unclear. In this study, we conducted integrated analysis using transcriptomics and non-targeted metabolomics to investigate the metabolic change...

2024-06-26 | MTBLS9981 | MetaboLights
TranscriptomicsRole of the extracytoplasmic-function sigma Factor sigmaH in Mycobacterium tuberculosis global gene expression
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 ...
ORGANISM(S): Mycobacterium tuberculosis 
2007-08-03 | E-GEOD-8689 | biostudies-arrayexpress
TranscriptomicsSigma factor E of Mycobacterium tuberculosis controls the expression of bacterial components that modulate macrophages
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 a...
ORGANISM(S): Mycobacterium tuberculosis 
2010-05-25 | E-GEOD-7962 | biostudies-arrayexpress
GenomicsSigma virus
sigma virus DMelSV raw sequence reads
PRJNA326864 | ENA
TranscriptomicsGenome-scale reconstruction of the sigma factor network in E. coli
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-...
ORGANISM(S): Escherichia coli str. K-12 substr. MG1655 
2014-02-05 | E-GEOD-46737 | biostudies-arrayexpress
TranscriptomicsSigma factor B (sigB) response to stress conditions (0.05% SDS and 5mM Diamide)
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....
ORGANISM(S): Mycobacterium tuberculosis 
2010-06-25 | E-GEOD-15976 | biostudies-arrayexpress
TranscriptomicsCanonical and non-canonical EcfG sigma factors control the general stress response in Rhizobium etli
A core component of the M-NM-1-proteobacterial general stress response is the extracytoplasmic function (ECF) sigma factor EcfG, exclusively present in this taxonomic class. Half of the completed M-NM-1-proteobacterial genome sequences contain two or more copies of genes encoding M-OM-^CEcfG-like si...
ORGANISM(S): Rhizobium etli CFN 42 
2013-12-20 | E-GEOD-53517 | biostudies-arrayexpress
TranscriptomicsRIP-seq identification of RNAs enriched on RNA polymerase and the primary sigma factor (sigma A) in Mycobacterium smegmatis
6S RNA is a small RNA with specific secondary structure that associates with the complex of RNA polymerase (RNAP) and the primary sigma factor in majority of bacteria. In mycobacteria, Ms1 interacts with the RNAP core without the sigma factor and probably replaces 6S RNA. To identify RNAs that have ...
ORGANISM(S): Mycolicibacterium smegmatis MC2 155 
2024-02-09 | E-MTAB-11692 | biostudies-arrayexpress
TranscriptomicsRIP-seq identification of RNAs enriched on RNA polymerase and the primary sigma factor (sigma A) in Bacillus subtilis
6S RNA is a small RNA with specific secondary structure that associates with the complex of RNA polymerase (RNAP) and the primary sigma factor in majority of bacteria. Bacillus subtilis has two 6S RNAs. To compare both 6S RNAs and to identify RNAs that might have a similar functions, we sequenced RN...
ORGANISM(S): Bacillus subtilis subsp. subtilis str. 168 
2024-02-09 | E-MTAB-11693 | biostudies-arrayexpress
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