GEO DataSets

(Submitter supplied) The expression profile of an S. Typhimurium hfq mutant-strain was compared to the parental strain under 2 different growth conditions; early stationary phase and SPI-1 (Salmonella pathogenicity island 1) inducing condition. Keywords: Genetic modification

Organism:

Salmonella enterica

Type:

Expression profiling by array

Platform:

GPL5780

12 Samples

Download data: TXT

(Submitter supplied) We used high-throughput methods to discover the Salmonella RNAs that are targeted by the bacterial Sm-like protein, Hfq. Our generic approach, using chromosomal epitope tagging and coIP-on-chip will also be useful to identify the post-transcriptional regulons of many other RNA-binding proteins. Keywords: coIP-chip

Organism:

Salmonella enterica subsp. enterica serovar Typhimurium; Salmonella enterica

Type:

Other

Platform:

GPL5791

4 Samples

Download data: TXT

(Submitter supplied) The small RNAs associated with protein Hfq constitute one of the largest classes of post-transcriptional regulators known to date. Most previously investigated members of this class are encoded by conserved free-standing genes. Here, deep sequencing of Hfq-bound transcripts from multiple stages of growth of Salmonella Typhimurium revealed a plethora of new small RNA species from within mRNA loci, including DapZ which overlaps with the 3’ region of the biosynthetic gene, dapB. more...

Organism:

Salmonella enterica subsp. enterica serovar Typhimurium str. SL1344

Type:

Other

Platform:

GPL15732

14 Samples

Download data: WIG

(Submitter supplied) To determine the targets of the small regulatory RNA DapZ in S. Typhimurium, we looked at the effect of a short pulse of DapZ over-expression on the Salmonella transcriptome, as well as a DapZ variant that lacks the GcvB-like R1 region. To achieve over-expression, the wild-type DapZ and its variant were cloned in the pBAD plasmid and induced with 0.2% L-arabinose for 10 min. We then extracted the total RNA for transcriptional profiling. more...

Organism:

Salmonella enterica subsp. enterica serovar Typhimurium str. SL1344

Type:

Expression profiling by array

Platform:

GPL11416

6 Samples

Download data: TXT

(Submitter supplied) S. typhimurium 14028 wt, hfq and smpB were harvested from log phase LB (LBlog); (2), stationary phase LB (LBstat); (3) 4h MgM medium pH 5.0 after resuspension of LB stat culture (MgMshock); and (4) log phase MgM medium pH5.0 after 100fold dilution of an LB stat culture (MgMDil). Total RNA was extracted, cDNA labeled and hybridized to a non-redundant Salmonella whole genome PCR product ORF array.

Organism:

Salmonella enterica; Salmonella enterica subsp. enterica serovar Typhimurium

Type:

Expression profiling by array

Platform:

GPL6868

36 Samples

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(Submitter supplied) The small RNA, ArcZ (previously RyhA/SraH), was discovered in several genome-wide screens in Escherichia coli and Salmonella. Its high degree of genomic conservation, its frequent recovery by shotgun sequencing, and its association with the RNA chaperone, Hfq, identified ArcZ as an abundant enterobacterial “core” small RNA of unknown function. Here, we report that ArcZ acts as a post-transcriptional regulator in Salmonella, repressing the mRNAs of the widely distributed sdaCB (serine uptake) and tpx (oxidative stress) genes, and of STM3216, a horizontally acquired methyl-accepting chemotaxis protein (MCP). more...

Organism:

Salmonella enterica

Type:

Expression profiling by array

Platform:

GPL5780

15 Samples

Download data: TXT

(Submitter supplied) We report the identification of new noncoding RNAs in Brucella suis 1330 and that are associated to the chaperone protein Hfq

Organism:

Brucella suis 1330

Type:

Expression profiling by high throughput sequencing

Platform:

GPL20974

2 Samples

Download data: GR

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

Organism:

Escherichia coli str. K-12 substr. MG1655

Type:

Expression profiling by high throughput sequencing; Other

Platforms:

GPL24659 GPL26592

30 Samples

Download data: FA, GTF

(Submitter supplied) By shaping gene expression profiles, small RNAs (sRNAs) enable bacteria to efficiently adapt to changes in their environment. To better understand how Escherichia coli acclimatizes to nutrient availability, we performed UV cross-linking, ligation and sequencing of hybrids (CLASH) to uncover Hfq-associated RNA-RNA interactions at specific growth stages. We demonstrate that Hfq CLASH robustly captures bona fide RNA-RNA interactions identified hundreds of novel sRNA base-pairing interactions, including many sRNA-sRNA interactions and involving 3’UTR-derived sRNAs. more...

Organism:

Escherichia coli str. K-12 substr. MG1655

Type:

Other

Platform:

GPL24659

16 Samples

Download data: TXT

(Submitter supplied) By shaping gene expression profiles, small RNAs (sRNAs) enable bacteria to efficiently adapt to changes in their environment. To better understand how Escherichia coli acclimatizes to nutrient availability, we performed UV cross-linking, ligation and sequencing of hybrids (CLASH) to uncover Hfq-associated RNA-RNA interactions at specific growth stages. We demonstrate that Hfq CLASH robustly captures bona fide RNA-RNA interactions identified hundreds of novel sRNA base-pairing interactions, including many sRNA-sRNA interactions and involving 3’UTR-derived sRNAs. more...

Organism:

Escherichia coli str. K-12 substr. MG1655

Type:

Expression profiling by high throughput sequencing

Platform:

GPL26592

14 Samples

Download data: XLSX

(Submitter supplied) The molecular roles of many RNA‐binding proteins in bacterial post‐transcriptional gene regulation are not well understood. Approaches combining in vivo UV crosslinking with RNA deep sequencing (CLIP‐seq) have begun to revolutionize the transcriptome‐wide mapping of eukaryotic RNA‐binding protein target sites. We have applied CLIP‐seq to chart the target landscape of two major bacterial post‐transcriptional regulators, Hfq and CsrA, in the model pathogen Salmonella Typhimurium. more...

Organism:

Salmonella enterica subsp. enterica serovar Typhimurium str. SL1344

Type:

Expression profiling by high throughput sequencing

Platform:

GPL20056

12 Samples

Download data: WIG

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

Organism:

Homo sapiens; Salmonella enterica subsp. enterica serovar Typhimurium str. SL1344

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL20056 GPL20051

42 Samples

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(Submitter supplied) FinO-domain proteins such as ProQ of the model pathogen Salmonella enterica have emerged as a new class of major RNA-binding proteins in bacteria. ProQ has been shown to target hundreds of transcripts including mRNAs from many virulence regions but its role, if any, in bacterial pathogenesis has not been studied. Here, using a Dual RNA-seq approach to profile ProQ-dependent gene expression changes as Salmonella infects human cells, we reveal dysregulation of bacterial motility, chemotaxis and virulence genes which is accompanied by altered mitogen-activated protein kinase signaling in the host. more...

Organism:

Salmonella enterica subsp. enterica serovar Typhimurium str. SL1344

Type:

Expression profiling by high throughput sequencing

Platform:

GPL20056

24 Samples

Download data: CSV

(Submitter supplied) FinO-domain proteins such as ProQ of the model pathogen Salmonella enterica have emerged as a new class of major RNA-binding proteins in bacteria. ProQ has been shown to target hundreds of transcripts including mRNAs from many virulence regions but its role, if any, in bacterial pathogenesis has not been studied. Here, using a Dual RNA-seq approach to profile ProQ-dependent gene expression changes as Salmonella infects human cells, we reveal dysregulation of bacterial motility, chemotaxis and virulence genes which is accompanied by altered mitogen-activated protein kinase signaling in the host. more...

Organism:

Salmonella enterica subsp. enterica serovar Typhimurium str. SL1344

Type:

Expression profiling by high throughput sequencing

Platform:

GPL20056

6 Samples

Download data: CSV

(Submitter supplied) FinO-domain proteins such as ProQ of the model pathogen Salmonella enterica have emerged as a new class of major RNA-binding proteins in bacteria. ProQ has been shown to target hundreds of transcripts including mRNAs from many virulence regions but its role, if any, in bacterial pathogenesis has not been studied. Here, using a Dual RNA-seq approach to profile ProQ-dependent gene expression changes as Salmonella infects human cells, we reveal dysregulation of bacterial motility, chemotaxis and virulence genes which is accompanied by altered mitogen-activated protein kinase signaling in the host. more...

Organism:

Homo sapiens; Salmonella enterica subsp. enterica serovar Typhimurium str. SL1344

Type:

Expression profiling by high throughput sequencing

Platform:

GPL20051

12 Samples

Download data: CSV

(Submitter supplied) The alpha-proteobacterium Caulobacter crescentus thrives in oligotrophic environments and is able to optimally exploit minimal resources by entertaining an intricate network of gene expression control mechanisms. Numerous transcriptional activators and repressors have been reported to contribute to these processes, but only few studies have focused on regulation at the post-transcriptional level in C. more...

Organism:

Caulobacter vibrioides

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL24555

2 Samples

Download data: XLSX

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

Organism:

Caulobacter vibrioides

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL21016 GPL28356

10 Samples

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(Submitter supplied) In this study we determined the target spectrum of C. crescentus sRNA R0199 via pulse-expression followed by RNA-sequencing.

Organism:

Caulobacter vibrioides

Type:

Expression profiling by high throughput sequencing

Platform:

GPL28356

6 Samples

Download data: XLSX

(Submitter supplied) In this study we used RNA co-immunoprecipitation followed by RNA-sequencing to identify Hfq-binding RNAs in C. crescentus.

Organism:

Caulobacter vibrioides

Type:

Expression profiling by high throughput sequencing

Platform:

GPL21016

4 Samples

Download data: XLSX

(Submitter supplied) In many gram-negative and some gram-positive bacteria small regulatory RNAs (sRNAs) that bind the RNA chaperone Hfq have a pivotal role in modulating virulence, stress responses, metabolism, and biofilm formation. These sRNAs recognize transcripts through base-pairing, and sRNA-mRNA annealing consequently alters the translation and/or stability of transcripts leading to changes in gene expression. We have previously found that the highly conserved 3'-to-5' exoribonuclease polynucleotide phosphorylase (PNPase) has an indispensable role in paradoxically stabilizing Hfq-bound sRNAs and promoting their function in gene regulation in Escherichia coli. more...

Organism:

Escherichia coli str. K-12 substr. MG1655

Type:

Expression profiling by high throughput sequencing; Other

Platform:

GPL15010

12 Samples

Download data: TXT, XLSX