GEO DataSets

(Submitter supplied) Whole genome expression profile comparing MGAS315 treated with XIP pheromone versus vehicle-treated cells Interpretations are described further in the manuscript to be submitted: authors Mashburn-Warren, Morrison, and Federle. Title: The Cryptic Competence Pathway in Streptococcus pyogenes is Controlled by a Peptide Pheromone.

Organism:

Streptococcus pyogenes MGAS315; Streptococcus pyogenes NZ131

Type:

Expression profiling by genome tiling array

Platform:

GPL15576

2 Samples

Download data: CALLS, PAIR, TXT

(Submitter supplied) S. mutans UA159 was cultivated in chemically defined medium. Changes in the transcriptome in response to the autoinducing peptides CSP and XIP were monitored for 30 minutes.

Organism:

Streptococcus mutans UA159

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19789

20 Samples

Download data: TXT

(Submitter supplied) In Streptococcus mutans, an oral colonizer associated with dental caries, competence for natural transformation can be triggered by both CSP and XIP pheromones. Competence induced by CSP is a late response that requires induction of the XIP encoding gene comS, but the mechanism(s) linking the two systems remains unknown. To learn how the CSP and XIP pheromone regulatory pathways are temporally linked, we mapped the global changes in gene expression at early and late phases of the CSP response and investigated the effect of deletion of comS on the S. more...

Organism:

Streptococcus mutans UA159

Type:

Expression profiling by genome tiling array

Platform:

GPL20590

6 Samples

Download data: PAIR, TXT

(Submitter supplied) In marine Vibrio species, chitin-induced natural transformation enables bacteria to take up DNA from the external environment and integrate it into their genome via homologous recombination. Expression of the master competence regulator TfoX bypasses the need for chitin induction and drives expression of the genes required for competence in several Vibrio species. Here, we show that TfoX expression in two Vibrio campbellii strains, DS40M4 and NBRC 15631, enables high frequencies of natural transformation. more...

Organism:

Vibrio campbellii

Type:

Expression profiling by high throughput sequencing

Platform:

GPL27117

12 Samples

Download data: TXT

(Submitter supplied) We performed comparative analysis of transcriptomes of S. mutans in single biofilms and in mixed-biofilms with A. actinomycetemcomitans. We also compared the transcriptomic profiles of A. actinomycetemcomitans in single biofilms and A. actinomycetemcomitans in mixed biofilms with S. mutans. Finally we looked at the changes in gene expression in both organisms in time.

Organism:

Aggregatibacter actinomycetemcomitans; Streptococcus mutans

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL21142 GPL21141 GPL21140

20 Samples

Download data: XLSX

(Submitter supplied) Rgg-dependent transcriptional regulation in Streptococcus pyogenes strains MGAS5005 and CS101 was analyzed during post-exponential phase of growth Keywords: strain comparion, post-exponential growth, rgg mutant

Organism:

Streptococcus pyogenes

Type:

Expression profiling by array

Platform:

GPL5018

8 Samples

Download data: CEL, FLC

(Submitter supplied) Rgg-dependent transcriptional regulation in SF370 Streptococcus pyogenes strain was analyzed during post-exponential phase of growth Keywords: rgg mutant

Organism:

Streptococcus pyogenes

Type:

Expression profiling by array

Platform:

GPL3312

4 Samples

Download data: FLC

(Submitter supplied) Streptococcus pyogenes growth-phase dependent and Rgg-dependent transcription was analyzed Keywords: transcriptional regulation

Organism:

Streptococcus pyogenes

Type:

Expression profiling by array

Platform:

GPL3312

9 Samples

Download data

(Submitter supplied) Streptococcus suis is a major pig pathogen as well as an emerging zoonotic pathogen. In a previous study (Zaccaria et al. Plos One DOI: 10.1371/journal.pone.0099394) we identified the natural pheromone-induced competence system of S. suis. To identify the mechanisms enabling competence, gene expression analysis of bacteria induced or not for competence, and in presence or absence of exogenous DNA, was assessed at 5, 15 and 45 minutes after pheromone addition. more...

Organism:

Streptococcus suis

Type:

Expression profiling by array

Platform:

GPL16024

16 Samples

Download data: TXT, XLSX

(Submitter supplied) Synchronizing production of antibacterial compounds and integration of DNA released by dead cells, competence is one of the most efficient bacterial evolutionary and adaptative strategies. In most streptococci, this tactic is orchestrated by the ComRS system, a pheromone communication device providing competence bimodal initiation and sharp time window of activation. Understanding how this developmental process integrates multiple inputs to fine-tune the adequate response is a long-standing question. more...

Organism:

Streptococcus salivarius

Type:

Expression profiling by high throughput sequencing

Platform:

GPL32298

3 Samples

Download data: XLSX

(Submitter supplied) BACKGROUND: Streptococcus mutans, the etiological agent of human dental caries, displays complex regulation of natural genetic competence. Competence development in S. mutans is controlled by a peptide derived from ComS (comX inducing peptide, XIP); which along with the cytosolic regulator ComR controls the expression of the alternative sigma factor comX, the master regulator of competence development. more...

Organism:

Streptococcus mutans

Type:

Expression profiling by high throughput sequencing

Platform:

GPL21130

9 Samples

Download data: TXT

(Submitter supplied) Differences in gene expression between the wild-typ SF370 and its rgg2 mutant was identified with samples collected from mid-exponential and post-exponential phases of growth

Organism:

Streptococcus pyogenes M1 GAS; Streptococcus pyogenes NZ131

Type:

Expression profiling by array

Platform:

GPL11420

12 Samples

Download data

(Submitter supplied) In bacteria, phenotypic heterogeneity rescues the need for diversity in isogenic populations and allow concomitant multiple survival strategies when choosing only one is too risky. This powerful tactic is exploited for competence in streptococci and results in a bimodal activation, where only a subset of the community triggers the system. Deciphering the mechanisms underlying this puzzling behavior has remained challenging, especially since its study has been mainly achieved in S. more...

Organism:

Streptococcus salivarius

Type:

Expression profiling by high throughput sequencing

Platform:

GPL23620

3 Samples

Download data: XLSX

(Submitter supplied) Persisters are a small fraction of growth-arrested phenotypic variants that can survive lethal concentrations of antibiotics but are able to resume growth once antibiotics are stopped. Their formation can be a stochastic process or triggered by environmental cues. In the human pathogen Streptococcus mutans, the canonical peptide-based quorum sensing system is an inducible DNA repair system that is pivotal for bacterial survival. more...

Organism:

Streptococcus mutans UA159

Type:

Expression profiling by high throughput sequencing

Platform:

GPL33790

6 Samples

Download data: TXT

(Submitter supplied) The human oral cavity is one of the most competing environments, considering the extent and diversity of the bacterial community that colonizes it, as well as the multiple stresses to which it is subjected. The commensal species Streptococcus salivarius is one of the first colonizers of the oral mucosa (tongue, gums, inner cheeks and tooth enamel) in infants and remains predominant throughout the life of an adult. more...

Organism:

Streptococcus salivarius

Type:

Expression profiling by high throughput sequencing

Platform:

GPL23620

6 Samples

Download data: XLSX

(Submitter supplied) Streptococcus pyogenes is an obligate human pathobiont associated with many disease states. Here, we present a novel model of S. pyogenes infection using intact murine epithelium. From this model, we were able to perform RNA sequencing to evaluate the genetic changes undertaken by both the bacterium and host at 5 and 24 hours post infection. Analysis of these genomic data demonstrate that S. pyogenes undergoes significant genetic adaptation to successfully infect the murine epithelium, including changes to metabolism and activation of the Rgg2/Rgg3 quorum sensing (QS) system. more...

Organism:

Streptococcus pyogenes NZ131; Mus musculus

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL33562 GPL13112 GPL33561

11 Samples

Download data: CSV, XLSX

(Submitter supplied) Transcriptional profiling of S. thermophilus LMD-9 wild-type in the presence of mitomycin C. Cells were grown in CDM medium supplemented with lactose 1% (CDML), without or with mitomycin C 0.08 microg/ml, and sampled at OD600 = 0.4 for mRNA extraction.

Organism:

Streptococcus thermophilus; Streptococcus thermophilus LMD-9

Type:

Expression profiling by array

Platform:

GPL13365

3 Samples

Download data: TXT

(Submitter supplied) Transcriptional profiling of S. thermophilus LMD-9 wild-type compared to the isogenic mutant strain CB0082 (deletion of hdiR, STER_0918) for the identification of the HdiR regulon. Cells were grown in CDM medium supplemented with lactose 1% (CDML) and sampled at OD600 = 0.4 for mRNA extraction

Organism:

Streptococcus thermophilus LMD-9; Streptococcus thermophilus

Type:

Expression profiling by array

Platform:

GPL13365

3 Samples

Download data: TXT

(Submitter supplied) To investigate the central competence regulators (SigH, ComK1 and ComK2) regulons, wt and KO strains were grown to competence in CS2 medium. We then performed gene expression profiling analysis using data obtained from RNA-seq of these four strains (wt and 3 KOs) at one time point.

Organism:

Staphylococcus aureus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL28116

12 Samples

Download data: CSV