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RpoHI and RpoHII regulons in Rhodobacter sphaeroides 2.4.1 from chromatin immuno-precipitation

ABSTRACT: In this study, we performed a ChIP-chip experiment to determine the respective regulons of RpoHI and RpoHII in Rhodobacter sphaeroides. We grew R. sphaeroides in aerobic conditions and induced either proteins ectopically and immuno-precipitated the regions of the genomic DNA interacting with the sigma factors.

ORGANISM(S): Cereibacter sphaeroides 2.4.1

PROVIDER: GSE39711 | GEO | 2012/08/03

SECONDARY ACCESSION(S): PRJNA171864

REPOSITORIES: GEO

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RpoHI and RpoHII regulons in Rhodobacter sphaeroides 2.4.1 from chromatin immuno-precipitation

Project description:In this study, we performed a ChIP-chip experiment to determine the respective regulons of RpoHI and RpoHII in Rhodobacter sphaeroides. We grew R. sphaeroides in aerobic conditions and induced either proteins ectopically and immuno-precipitated the regions of the genomic DNA interacting with the sigma factors. DNA immunoprecipitated with antibodies against RpoHI or RpoHII was labelled with Cy5 and hybridized on two-color tilling arrays (triplicates for each) with genomic DNA as an input control labelled with Cy3.

2012-08-02 | E-GEOD-39711 | biostudies-arrayexpress

RpoHI and RpoHII regulons in Rhodobacter sphaeroides 2.4.1

Project description:This SuperSeries is composed of the following subset Series: GSE39711: RpoHI and RpoHII regulons in Rhodobacter sphaeroides 2.4.1 from chromatin immuno-precipitation GSE39712: RpoHI and RpoHII regulons in Rhodobacter sphaeroides 2.4.1 from gene expression profiling Refer to individual Series

2012-08-02 | E-GEOD-39806 | biostudies-arrayexpress

RpoHI and RpoHII regulons in Rhodobacter sphaeroides 2.4.1 from gene expression profiling

Project description:In this study, we performed expression profiling experiments to determine the respective regulons of RpoHI and RpoHII in Rhodobacter sphaeroides. We grew R. sphaeroides in aerobic conditions and induced either proteins ectopically and compared the global gene expression profiles. The expression profiles of R. sphaeroides strains lacking either RpoHI or RpoHII were compered to strains expressing RpoHI or RpoHII ectopically from a plasmid to detect gene differentially expressed. Three biological replicates were performed for each strain.

2012-08-02 | E-GEOD-39712 | biostudies-arrayexpress

RpoHI and RpoHII regulons in Rhodobacter sphaeroides 2.4.1 from gene expression profiling

2012-08-03 | GSE39712 | GEO

Cereibacter sphaeroides 2.4.1

Project description:RpoHI and RpoHII regulons in Rhodobacter sphaeroides 2.4.1 from gene expression profiling

| PRJNA171865 | ENA

Cereibacter sphaeroides 2.4.1

Project description:RpoHI and RpoHII regulons in Rhodobacter sphaeroides 2.4.1 from chromatin immuno-precipitation

| PRJNA171864 | ENA

Transcriptome analysis of total RNA from Rhodobacter sphaeroides 2.4.1 wildtype and StsR (RSs0827) deletion strain during different growth phases

Project description:The sRNA StsR (formerly RSs0827) was first described as an sRNA induced upon iron starvation and was later demonstrated to be the most highly induced RNA in late stationary phase in the phototrophic Alphaproteobacterium R. sphaeroides. StsR is under control of RpoHI/RpoHII and therefore induced by multiple stress factors. To investigate the function of this sRNA on the hole transcriptome of R. sphaeroides we performed RNAseq with cultures of the exponential growth (6 h) phase, stationary growth phase (72 h / 144 h) and outgrowth phase. Cultures were grown under microaerobic growth conditions in biological triplicates.

2021-08-03 | GSE175997 | GEO

Transcriptome response to nitrosative stress in Rhodobacter sphaeroides 2.4.1

2012-11-11 | GSE33641 | GEO

PpsR regulon in Rhodobacter sphaeroides

Project description:mRNA levels were measured in Rhodobacter sphaeroides 2.4.1 at 20% O2 and 0.5% O2, Rhodobacter sphaeroides 2.4.1 App11 (AppA-null), Rhodobacter sphaeroides 2.4.1 (pPNs) and PpsR mutant PPS2-4. The mRNA samples were prepared from cultures supplied with 20% O2, 1% CO2, and 79% N2, and grown in the dark to an OD of 0.18. The mRNA levels for each strain was measured three times. Keywords: repeat sample

2004-07-03 | GSE1515 | GEO

Transcriptome response to nitrosative stress in Rhodobacter sphaeroides 2.4.1

Project description:DNA microarray analysis was employed to investigate the transcriptome response to nitrosative stress in a non-denitrifying facultative photosynthetic bacterium Rhodobacter sphaeroides 2.4.1. We focused on the role played by a nitric oxide-response transcriptional regulator NnrR in the response. The transcriptome profiles of R. sphaeroides 2.4.1 and its nnrR mutant before and after exposure to nitrosating agents S-nitrosoglutathione (GSNO) or sodium nitroprusside (SNP) under semiaerobic conditions were analyzed. R. sphaeroides 2.4.1 and its nnrR mutant were cultivated in glass bottles under semiaerobic growth conditions. When the optical density at 600 nm reached approximately 0.15-0.2, 1 mM GSNO or SNP was added to the medium. RNA was isolated from a 50 ml aliquot of the culture prior to the addition of GSNO or SNP and at 15 min after the addition. The experiment was performed in duplicate independent cultures.

2012-11-11 | E-GEOD-33641 | biostudies-arrayexpress

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