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Genome-wide protein-DNA interaction analysis of CceR and AkgR transcription factors

ABSTRACT: To gain a better understanding of the transcription factors that regulate central carbon metabolism in Rhodobacter sphaeroides ChIP-seq was used to determine the genome-wide binding locations of 2 transcription factors: CceR (RSP_1663) and AkgR (RSP_0981) both predicted to be involved in the regulation of of central carbon and energy metabolism.

ORGANISM(S): Cereibacter sphaeroides

PROVIDER: GSE63449 | GEO | 2015/02/02

SECONDARY ACCESSION(S): PRJNA267772

REPOSITORIES: GEO

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Genome-wide protein-DNA interaction analysis of CceR and AkgR transcription factors

Project description:To gain a better understanding of the transcription factors that regulate central carbon metabolism in Rhodobacter sphaeroides ChIP-seq was used to determine the genome-wide binding locations of 2 transcription factors: CceR (RSP_1663) and AkgR (RSP_0981) both predicted to be involved in the regulation of of central carbon and energy metabolism. Genome-wide protein-DNA interaction analysis of 2 transcription factors predicted to be involved in regulation of central carbon metabolism CceR and AkgR

2015-02-02 | E-GEOD-63449 | biostudies-arrayexpress

Microarray analysis of Rhodobacter sphaeroides CceR and AkgR deletion strains

Project description:To gain a better understanding of the transcription factors that regulate central carbon metabolism in Rhodobacter sphaeroides global gene expression analysis was used to determine genes under the regulatory influence of 2 transcription factors: CcmR (RSP_1663) and AkgR (RSP_0981) both predicted to be involved in the regulation of central carbon and energy metabolism. Microarray analysis conducted for deletion strains of 2 transcription factors known or predicted to be involved in the regulation of central carbon metabolism in Rhodobacter sphaeroides using the R. sphaeroides Affymetrix gene chip. These deletion mutant expression profiles were compared to that of wild type cells to determine differentially expressed genes regulated by these transcription factors.

2015-02-02 | E-GEOD-63448 | biostudies-arrayexpress

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2014-12-15 | E-GEOD-58716 | biostudies-arrayexpress

An Integrated Approach to Reconstructing Genome-scale Transcriptional Regulatory Networks [ChIP-Seq]

Project description:By integrating sequence information from closely related bacteria with a compendium of high-throughput gene expression datasets, a large-scale transcriptional regulatory networks was constructed for Rhodobacter sphaeroides. Predictions from this network were validated in part using genome-wide analysis for 3 transcription factors (PpsR, RSP_0489 and RSP_3341). Genome-wide protein-DNA interaction analysis of 3 transcription factors predicted to be involved in photosynthesis (PpsR), carbon metabolism (RSP_0489) and iron homeostasis (RSP_3341) were used to validate predictions from a large-scale reconstruction of R. sphaeroides transcriptional regulatory network.

2014-07-01 | E-GEOD-58648 | biostudies-arrayexpress

Global analysis of photosynthesis transcriptional regulatory networks [ChIP-seq]

2014-12-15 | GSE58716 | GEO

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Project description:Rhodobacter sphaeroides is the best studied photosynthetic bacterium, yet much remains unknown about its transcriptional regulatory processes on a genome-scale. We developed a work-flow for genome-scale reconstruction of transcriptional regulatory networks and applied it to sequence and gene expression data sets available for R. sphaeroides. To assess the predictive performance of our reconstructed model, we generated global transcript level and/or protein-DNA interaction data for 3 transcription factors (PpsR, RSP_0489 and RSP_3341). This dataset contains global transcript level analyses for RSP_0489 and RSP_3341 deletion strains, as well as matching wild type controls. Microarray analysis conducted for deletion strains of 2 previously uncharacterized transcription factors predicted to be involved in the regulation of carbon metabolism and iron homeostasis in R. sphaeroides using the R. sphaeroides Affymetrix gene chip. These deletion mutant expression profiles were compared to that of wild type cells to determine differentially expressed genes regulated by these transcription factors.

2014-06-17 | E-GEOD-58553 | biostudies-arrayexpress

Role of a short LOV protein in blue light- and singlet oxygen-dependent gene regulation in Rhodobacter sphaeroides

Project description:The facultatively photosynthetic bacterium Rhodobacter sphaeroides harbors an unusual LOV (light, oxygen, voltage) domain protein, RsLOV. While showing a characteristic photocycle, the protein misses a C - terminal output domain, similar to PpSB2 in Pseudomonas putida. Oxygen tension and light quantity are the two main responsible factors controlling the expression of photosynthesis genes in Rhodobacter sphaeroides. Two photoreceptor proteins are known to be involved in this regulation: the intensively studied AppA protein and the more recently identified cryptochrome-like protein CryB. Here we show by transcriptome and physiological studies that RsLOV is also involved in the regulation of photosynthetic gene expression. Our data further hint to a connection between RsLOV and the carbon hydrate metabolism, chemotaxis, as well as to the cellular response to photooxidative stress. RsLOV does not only affect blue light dependent gene expression but also redox-dependent regulation. This SuperSeries is composed of the following subset Series: GSE33194: R. sphaeroides ?lov vs. R. sphaeroides 2.4.1 (microarobic conditions) GSE33259: R. sphaeroides ?lov vs. R. sphaeroides 2.4.1 (blue light, semiaerobic conditions) GSE33260: R. sphaeroides ?lov vs. R. sphaeroides 2.4.1 (singlet oxygen stress, aerobic conditions)

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Global analysis of photosynthesis transcriptional regulatory networks [Expression profiling]

Project description:To gain a deeper understanding of the transcription factors that regulate photosynthesis in Rhodobacter sphaeroides global gene expression analysis was used to determine the expression profiles of the deletion mutants of 4 transcription factors (FnrL, PrrA, CrpK and RSP_2888) known or predicted to be involved in the regulation of photosynthesis. Microarray analysis conducted for deletion strains of 4 transcription factors known or predicted to be involved in the regulation of photosynthesis in Rhodobacter sphaeroides using the R. sphaeroides Affymetrix gene chip. These deletion mutant expression profiles were compared to that of wild type cells to determine differentially expressed genes regulated by these transcription factors.

2014-12-15 | E-GEOD-58554 | biostudies-arrayexpress

Role of a short LOV protein in blue light- and singlet oxygen-dependent gene regulation in Rhodobacter sphaeroides

2011-10-26 | GSE33261 | GEO

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