Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Transcriptomic data in the presence of ferulic or p-coumaric acids in AT media

ABSTRACT: we measured the impact of the addition or 500 micromolar of ferulic acid or p-coumaric acids in A. fabrum C58 after 24 H of growth in AT mimimum media with succinate as carbone source. Results showed similar impact of both compounds on gene expression with a large induction of genes involved in metabolism and expression processes. Moreover, an unexpected induction of two gene operons those encoded proteins were involved in the biosynthesis of siderophore was detected.

INSTRUMENT(S): MS200 NimbleGen scanner

ORGANISM(S): Agrobacterium tumefaciens str. C58

SUBMITTER: Florence Hommais

PROVIDER: E-MTAB-3589 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:Subtelomeric chromatin is subject to evolutionarily conserved complex epigenetic regulation and is implicated in numerous aspects of cellular function including formation of heterochromatin, regulation of different stress response pathways, and control of lifespan. Subtelomeric DNA is characterized by the presence of specific repeated segments that serve to propagate silencing activities or to protect chromosomal regions from spreading epigenetic control. Using condition-specific genome wide chromatin immunoprecipitation and expression data, we show that several yeast transcription factors regulate subtelomeric silencing in response to various environmental stimuli through conditional association with proto-silencing regions called X elements. In this context, some factors control the propagation of silencing toward centromeres in response to stimuli affecting stress responses and metabolism, whereas others appear to influence boundaries of silencing, regulating telomere-proximal genes in Y’ elements. The factors implicated here have previously been shown to control adjacent genes at intrachromosomal positions, suggesting dual functionality of the factors and a possible mechanism of coordinating intrachromosomal gene expression with subtelomeric silencing. These data suggest a fundamental mechanism to coordinate telomere biology related to aging and adaptation with cellular environment and the activities of other cellular processes. These are Chip-CHIP data for myc tagged Oaf1p transcription factor from S. cerevisiae grown in the presence or absence of the fatty acid oleate. ChIP-CHIP analysis was performed to determine the genomic distribution of Oaf1p transcription factor in the BY4742 yeast strain after growth in 0.1% glucose, or in the presence of the fatty acid oleate. Three biological replicates for each growth condition (in the presence of low glucose or 5 h after a shift to medium containing oleate as a carbon source). ChIP samples were amplified by PCR, labelled and hybridized to 50-mer tiling arrays covering both strands of the entire yeast genome at a 64 bp resolution.

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Transcriptomic data in the presence of ferulic or p-coumaric acids in AT media

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