Saccharomyces cerevisiae
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA99305 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:We report the genome-wide localization of Sgo1p in mitosis of Saccharomyces cerevisiae using ChIP-seq. The high resolution mapping clearly shows a tripartite domain of Sgo1p in each mitotic chromosome. This domain requires the wildtype tension sensing motif (TSM) of histone H3.
2018-09-01 | GSE110953 | GEO
Project description:We report the application of single-molecule-based sequencing technology for high-throughput profiling of histone modifications in yeast. By obtaining bases of sequence from chromatin immunoprecipitated DNA, we generated genome-wide chromatin-state maps of saccharomuces cerevisiae.We find that H3T11 phosphorylationlysine is widely distributed in gene promoter region and chromosome telomere region
2020-03-12 | GSE146821 | GEO
Project description:Single-nucleosome mapping of histone modifications in S. cerevisiae
| PRJNA92431 | ENA
Project description:Specific histone modifications play important roles in chromatin functions such as activation or repression of gene transcription. These participation must occur as a dynamic process, however, most of histone modification state maps reported to date only provide static pictures linking certain modification with active or silenced states. This study focused on the global histone modification variation that occurs in response to transcriptional reprogramming produced by a physiological perturbation in yeast. We have performed genome-wide chromatin immunoprecipitation analysis for eight specific histone modifications before and after of a saline stress. The most striking change is a quick deacetylation of lysines 9 and 14 of H3 and lysine 8 of H4 associated to repression of genes. Genes that are activated increase the acetylation levels at these same sites, but this acetylation process of activated genes seems minor quantitatively to that of the deacetylation of repressed genes. The observed changes in tri-methylation of lysines 4, 36 and 79 of H3 and also di-methylation of lysine 79 of H3 are much more moderate than those of acetylation. Additionally, we have produced new genome-wide maps for six histone modifications at more than five times higher resolution of previous available data and analyzed for the first time in S. cerevisiae genome wide profiles of two more, acetylation of lysine 8 of H4 and di-methylation of lysine 79 of H3. In this research we have shown that dynamic of acetylation state of histones during activation or repression of transcription is a process much quicker than methylation and therefore the changes produced in the acetylation may affect methylation but the reverse path is not possible.
2014-04-06 | GSE41587 | GEO
Project description:Genome wide patterns of histone modifications in fission yeast Keywords: High resolution maps of nucleosome modifications
2006-03-06 | GSE3340 | GEO
Project description:High-Resolution Nucleosome Mapping Reveals Transcription-Dependent Promoter Packaging
| PRJNA120207 | ENA
Project description:The Mediator complex transmits activation signals from DNA bound transcription factors to the core transcription machinery. Genome wide localization studies have demonstrated that Mediator occupancy not only correlates with high levels of transcription, but that the complex also is present at transcriptionally silenced locations. We provide evidence that Mediator localization is guided by an interaction with histone tails, and that this interaction is regulated by their post-translational modifications. A quantitative, high-density genetic interaction map revealed links between Mediator components and factors affecting chromatin structure, especially histone deacetylases. Peptide binding assays demonstrated that pure wild type Mediator forms stable complexes with the tails of Histone H3 and H4. These binding assays also showed Mediator – histone H4 peptide interactions are specifically inhibited by acetylation of the histone H4 lysine 16, a residue critical in transcriptional silencing. Finally, these findings were validated by tiling array analysis, that revealed a broad correlation between Mediator and nucleosome occupancy in vivo, but a negative correlation between Mediator and nucleosomes acetylated at histone H4 lysine 16. Our studies show that chromatin structure and the acetylation state of histones are intimately connected to Mediator localization.
2011-11-22 | GSE28613 | GEO
Project description:5-Formylcytidine (f5C) is one type of post-transcriptional RNA modifi-cations, which is known at the wobble position of tRNA in mitochon-dria and essential for mitochondrial protein synthesis. Here, we show a method to detect f5C modifications in RNA and a transcriptome-wide f5C mapping technique, named f5C-seq. It is developed based on the treatment of pyridine borane, which can reduce f5C to 5,6-dihydrouracil (DHU), thus inducing C-to-T transition in f5C sites during PCR to achieve single-base resolution detection. Thousands of f5C sites were identified after mapping in Saccharomyces cerevisiae by f5C-seq. Moreover, codon composition demonstrated a preference for f5C within wobble sites in mRNA, suggesting the potential role in regulation of translation. These findings expand the scope of the understanding of cytosine modifications in mRNA. Reference build: S288C_reference_genome_R64-2-1_20150113
2021-12-01 | GSE133138 | GEO
Project description:Specific histone modifications play important roles in chromatin functions such as activation or repression of gene transcription. These participation must occur as a dynamic process, however, most of histone modification state maps reported to date only provide static pictures linking certain modification with active or silenced states. This study focused on the global histone modification variation that occurs in response to transcriptional reprogramming produced by a physiological perturbation in yeast. We have performed genome-wide chromatin immunoprecipitation analysis for eight specific histone modifications before and after of a saline stress. The most striking change is a quick deacetylation of lysines 9 and 14 of H3 and lysine 8 of H4 associated to repression of genes. Genes that are activated increase the acetylation levels at these same sites, but this acetylation process of activated genes seems minor quantitatively to that of the deacetylation of repressed genes. The observed changes in tri-methylation of lysines 4, 36 and 79 of H3 and also di-methylation of lysine 79 of H3 are much more moderate than those of acetylation. Additionally, we have produced new genome-wide maps for six histone modifications at more than five times higher resolution of previous available data and analyzed for the first time in S. cerevisiae genome wide profiles of two more, acetylation of lysine 8 of H4 and di-methylation of lysine 79 of H3. In this research we have shown that dynamic of acetylation state of histones during activation or repression of transcription is a process much quicker than methylation and therefore the changes produced in the acetylation may affect methylation but the reverse path is not possible. The experiments described in this study compare ChIP with a histone modification antibody to a control ChIP with a core histone antibody. Budding yeast samples were analyzed in exponential growing conditions (YPD) or after 10 minutes of 0.4M NaCl stress. For each experiment 1 or 2 biological replicates were performed.
2014-04-06 | E-GEOD-41587 | biostudies-arrayexpress
Project description:The transcription factor Cst6p in Saccharomyces cerevisiae has been reported to play important roles in several biological processes. However, the genome-wide targets of Cst6p and the mechanisms for its physiological functions remain unknown. Here, we mapped the genome-wide binding sites of Cst6p with ChIP-exo at high resolution. Cst6p binds to the promoter regions of 59 genes with various biological functions when cells are grown on ethanol, but hardly binds to the genome on glucose. The growth deficiency of CST6 deletion mutant on ethanol is attributed to the markedly decreased expression of carbonic anhydrase gene NCE103, which is a direct target of Cst6p. The target genes of Cst6p have a large overlap with those of stress-responsive transcription factors, such as Sko1p and Skn7p. In addition, the CST6 deletion mutant growing on ethanol shows hypersensitivity to oxidative stress and ethanol stress, assigning Cst6p as a new member of the stress-responsive transcriptional regulatory network. These results show that genome-wide binding site mapping is able to provide new insights into the function of transcription factors, and highlight the highly connected and condition-dependent nature of the transcriptional regulatory network in S. cerevisiae.
2016-04-04 | GSE76154 | GEO