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The Streptococcus agalactiae transcriptional landscape

ABSTRACT: The Streptococcus agalactiae transcriptional landscape

PROVIDER: PRJEB8097 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR712636.fastq.gz	Fastqsanger.gz
	ERR712637.fastq.gz	Fastqsanger.gz
	ERR712638.fastq.gz	Fastqsanger.gz
	ERR712639.fastq.gz	Fastqsanger.gz
	ERR712640.fastq.gz	Fastqsanger.gz

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The Streptococcus agalactiae transcriptional landscape

Project description:Streptococcus agalactiae, also known as Group B streptococcus, emerged in the 1960s as a leading cause of septicemia and meningitis in neonates. It is also an increasing cause of infections in adults with underlying diseases. To characterize regulatory elements in this species we performed a genome-wide transcription start site (TSS) profiling and whole-transcript sequencing. TSS were identified by using a differential RNA-seq strategy, based on selective Tobacco Acid Pyrophosphatase (TAP) treatment and adapter ligation, which differentiates primary transcripts and processed RNAs. The accuracy and sensitivity of TSS identification were increased by combining differential RNA-seq analyses under eight conditions corresponding to variations in growth conditions and genetic backgrounds. Whole-transcript sequencing used a two-step adaptor ligation-based directional RNA-seq protocol and was performed under two experimental conditions with triplicate experiments to assess variations in gene expression in response to an acid stress

2015-04-21 | E-MTAB-3200 | biostudies-arrayexpress

Transcriptional Responses to Elevated Temperature in Streptococcus agalactiae

Project description:In the transition from recto-vaginal colonizing organism to invasive pathogen, Streptococcus agalactiae (Group B Streptococcus, GBS) must adapt to changes in host temperature, including elevated temperatures due to host fever. To identify genes important to the survival of GBS in response to heat stress, transcriptional profiling was performed using DNA microarray analysis, comparing GBS grown at normal temperature (37˚C) to GBS exposed to elevated temperature (42˚C).

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Streptococcus agalactiae stringent response RNA-seq

Project description:Transcriptome analysis of Streptococcus agalactiae (group B Streptococcus) grown under control conditions or coincubated with serine hydroxamate to induce the bacterial stringent response

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RNA sequencing analysis of CopY-deficient Streptococcus agalactiae

Project description:Total RNA was isolated from mid-log phase Streptococcus agalactiae cells deficient in CopY (∆copY strain GU2857), grown in Todd-Hewitt broth (THB) medium and sequenced using Illumina NextSeq500.

2021-06-01 | GSE167896 | GEO

RNA sequencing analysis of SczA-deficient Streptococcus agalactiae

Project description:Total RNA was isolated from mid-log phase Streptococcus agalactiae cells deficient in SczA (∆sczA strain GU2791), grown in Todd-Hewitt broth (THB) medium and sequenced using Illumina NextSeq500.

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RNA sequencing analysis of covR-deficient Streptococcus agalactiae

Project description:Total RNA was isolated from mid-log phase Streptococcus agalactiae cells deficient in CovR (∆covR strain GU2400), grown in Todd-Hewitt broth (THB) medium and sequenced using Illumina NextSeq500

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RNA sequencing analysis of Streptococcus agalactiae 874391 (wild-type)

Project description:Total RNA was isolated from mid-log phase Streptococcus agalactiae 874391 wild-type cells grown in Todd-Hewitt broth (THB) medium and sequenced using Illumina NextSeq500

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Streptococcus agalactiae Panproteome

Project description:Streptococcus agalactiae (Lancefield’s group B Streptococcus, GBS) is a major bacterial species of genus Streptococcus and has medical and veterinary importance by affecting mainly humans (Maione et al., 2005; Johri et al., 2006), cattle (Keefe, 1997) and fish (Mian et al., 2009). The GBS is the most important pathogen for the Nile tilapia, a global commodity of the aquaculture sector, causing outbreaks of septicemia and meningoencephalitis (Hernández et al., 2009; Mian et al., 2009). This study aimed to evaluate the global abundancy of proteins among the main genotypes of GBS isolated from fish identified in Brazil using a label free shotgun liquid chromatography-ultra definition mass spectrometry (LC-UDMSE) approach and to compare the differential expression of proteins identified between isolates from fish and human.

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RNA-seq of a Streptococcus agalactiae A909 mutant strain deleted for the pleiotropic transcriptional regulator CcpA

Project description:The commensal bacterium Streptococcus agalactiae is responsible for various infections in a wide variety of hosts including humans. Its broad spectrum of hosts shows its ability to acquire nutrients in variable conditions. The carbon catabolite repression allows bacteria to prioritize the uptake and the catabolism of the environmental sugars. In Gram-positive bacteria, CcpA (catabolite control protein A), a pleiotropic transcriptional regulator, plays a key role in catabolite repression. Studies have shown the involvement of carbon catabolite repression in the adaptation and stress resistance of pathogenic bacteria. The goal of this study is to determine the regulon and the role(s) of CcpA in the physiology and adaptation of S. agalactiae. To this aim, Streptococcus agalactiae strain A909 WT and its isogenic mutant ∆ccpA, obtained by allelic exchange were grown in filter-sterilized chemically defined medium (CDM) supplemented with 0,25% or 1% (w/v) of glucose. Their transcriptomes were compared under these two conditions by using RNA-seq.

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