Saccharomyces cerevisiae BY4741
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA214015 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR948366.fastq.gz | Fastqsanger.gz | |||
| SRR948367.fastq.gz | Fastqsanger.gz | |||
| SRR948368.fastq.gz | Fastqsanger.gz | |||
| SRR948369.fastq.gz | Fastqsanger.gz | |||
| SRR948370.fastq.gz | Fastqsanger.gz |
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Project description:INO80 / SWR remodelers, including INO80, P400 / TIP60, and SR CAP, ha v e been vie w ed to regulate H2A.Z dynamics, but how they control specific gene expression remains unclear. Here, we reveal distinct phenotypes arising from short- and long-term perturbations f ollo wing the depletion of INO80 / SWR remodelers. We identified the direct target genes of INO80, P400, and SRCAP remodelers. Mechanistically, we found that INO80 / SWR remodelers interact and facilitate the chromatin occupancy of the H2A.Zac reader protein BRD2, thereby elucidating the regulation of Pol II transcription b y INO80 / SWR remodelers. A dditionally, while the degradation of P400 or SRCAP led to a reduction in H2A.Zac, INO80 depletion did not affect H2A.Zac occupancy but decreased the occupancy of P400 and SRCAP. Collectively, our findings suggest that INO80 / SWR remodelers primarily regulate the chromatin landscape and influences BRD2 chromatin binding, thereby shedding light on their mechanisms in Pol II transcription regulation during de v elopment and disease.
2025-09-01 | GSE237533 | GEO
Project description:INO80 / SWR remodelers, including INO80, P400 / TIP60, and SR CAP, ha v e been vie w ed to regulate H2A.Z dynamics, but how they control specific gene expression remains unclear. Here, we reveal distinct phenotypes arising from short- and long-term perturbations f ollo wing the depletion of INO80 / SWR remodelers. We identified the direct target genes of INO80, P400, and SRCAP remodelers. Mechanistically, we found that INO80 / SWR remodelers interact and facilitate the chromatin occupancy of the H2A.Zac reader protein BRD2, thereby elucidating the regulation of Pol II transcription b y INO80 / SWR remodelers. A dditionally, while the degradation of P400 or SRCAP led to a reduction in H2A.Zac, INO80 depletion did not affect H2A.Zac occupancy but decreased the occupancy of P400 and SRCAP. Collectively, our findings suggest that INO80 / SWR remodelers primarily regulate the chromatin landscape and influences BRD2 chromatin binding, thereby shedding light on their mechanisms in Pol II transcription regulation during de v elopment and disease.
2025-09-01 | GSE237531 | GEO
Project description:INO80 / SWR remodelers, including INO80, P400 / TIP60, and SR CAP, ha v e been vie w ed to regulate H2A.Z dynamics, but how they control specific gene expression remains unclear. Here, we reveal distinct phenotypes arising from short- and long-term perturbations f ollo wing the depletion of INO80 / SWR remodelers. We identified the direct target genes of INO80, P400, and SRCAP remodelers. Mechanistically, we found that INO80 / SWR remodelers interact and facilitate the chromatin occupancy of the H2A.Zac reader protein BRD2, thereby elucidating the regulation of Pol II transcription b y INO80 / SWR remodelers. A dditionally, while the degradation of P400 or SRCAP led to a reduction in H2A.Zac, INO80 depletion did not affect H2A.Zac occupancy but decreased the occupancy of P400 and SRCAP. Collectively, our findings suggest that INO80 / SWR remodelers primarily regulate the chromatin landscape and influences BRD2 chromatin binding, thereby shedding light on their mechanisms in Pol II transcription regulation during de v elopment and disease.
2025-09-01 | GSE237530 | GEO
Project description:INO80/SWR remodelers, including INO80, P400/TIP60, and SRCAP, have been viewed to regulate H2A.Z dynamics, but how they control specific gene expression remains unclear. Here, we reveal distinct phenotypes arising from short- and long-term perturbations following the depletion of INO80/SWR remodelers. We identified the direct target genes of INO80, P400, and SRCAP remodelers. Mechanistically, we found that INO80/SWR remodelers interact and facilitate the chromatin occupancy of the H2A.Zac reader protein BRD2, which is crucial for Pol II initiation through TFIID. Additionally, while the degradation of P400 or SRCAP led to a reduction in H2A.Zac, INO80 depletion did not affect H2A.Zac occupancy but decreased the occupancy of P400 and SRCAP. Collectively, our findings suggest that INO80/SWR remodelers primarily regulate the chromatin landscape and influences BRD2 chromatin binding, thereby shedding light on their mechanisms in Pol II transcription regulation during development and disease.
2025-09-01 | GSE237532 | GEO
Project description:INO80/SWR remodelers, including INO80, P400/TIP60, and SRCAP, have been viewed to regulate H2A.Z dynamics, but how they control specific gene expression remains unclear. Here, we reveal distinct phenotypes arising from short- and long-term perturbations following the depletion of INO80/SWR remodelers. We identified the direct target genes of INO80, P400, and SRCAP remodelers. Mechanistically, we found that INO80/SWR remodelers interact and facilitate the chromatin occupancy of the H2A.Zac reader protein BRD2, which is crucial for Pol II initiation through TFIID. Additionally, while the degradation of P400 or SRCAP led to a reduction in H2A.Zac, INO80 depletion did not affect H2A.Zac occupancy but decreased the occupancy of P400 and SRCAP. Collectively, our findings suggest that INO80/SWR remodelers primarily regulate the chromatin landscape and influences BRD2 chromatin binding, thereby shedding light on their mechanisms in Pol II transcription regulation during development and disease.
2025-09-01 | GSE281122 | GEO
Project description:Genome-wide nucleosome specificity and directionality of chromatin remodelers
| PRJNA189244 | ENA
Project description:Arrays of regularly spaced nucleosomes dominate chromatin and are often phased, i.e., aligned at reference sites like active promoters. How distances between nucleosomes and distances between phasing sites and nucleosomes are determined remained unclear, specifically, the role of ATP dependent chromatin remodelers in it. Here, we used a genome-wide reconstitution system to probe how yeast remodelers generate phased nucleosome arrays. We find that remodelers bear a structural element named the ‘ruler’ that sets nucleosome spacing, in the order Chd1 < ISW1a < ISW2 < INO80. Structure-based mutagenesis confirmed the functional significance of the ruler element in INO80. Differences in the ruler elements of different remodelers explain the observed nucleosome array features. More generally, we propose that remodelers use their rulers to regulate the direction of nucleosome sliding in response to nucleosome density and environment, leading to nucleosome positioning relative to other nucleosomes, DNA bound factors or DNA sequence elements.
2020-02-10 | GSE140614 | GEO
Project description:Numerous nucleosome remodeling enzymes tightly regulate nucleosome positions in eukaryotic cells. Transcription and statistical positioning of nucleosomes may also contribute to proper nucleosome organization. Individual contributions remain controversial due to strong redundancy of processes acting on the nucleosome landscape. By incisive yeast genome engineering we radically decreased their redundancy. We find the transcriptional machinery to be disruptive of evenly spaced nucleosomes, and proper nucleosome density critical for their biogenesis. INO80 spaces nucleosomes in vivo and positions the first nucleosome covering genes. It requires its Arp8 and Ies2 subunits, but unexpectedly not the Nhp10 module, for spacing. Whereas H2A.Z stimulates INO80 in vitro, its presence is dispensable for INO80 +1 positioning function in vivo. DNA damage, recombination and transposon integration assays suggest that evenly spaced nucleosomes protect cells against genotoxic stress. We derive a unifying model of the biogenesis of the nucleosome landscape and suggest that it evolved not only to regulate but also to protect the genome.
2021-10-20 | GSE141007 | GEO
Project description:Nucleosome arrays begin at nucleosome-free promoter regions (NFRs) and regulate gene expression. Reconstituting such organization throughout a genome with purified proteins is a critical challenge in establishing biochemical mechanisms for chromosome assembly. Here we establish a four-step hierarchical building plan for yeast genomic nucleosome organization using only purified components: genomic DNA, histones, site-specific organizing factors Abf1 and Reb1, and the chromatin remodelers RSC, ISW2, INO80, and ISW1a. First, RSC makes NFRs by translating promoter poly(dA:dT) tracts into directional nucleosome removal. Second, +1 nucleosomes are positioned by INO80 at most genes potentially involving DNA shape, or by ISW2 using gene-specific Abf1 and Reb1. Third, INO80 or ISW2 create arrays with wide spacing. Fourth, ISW1a tightens the spacing and creates properly positioned arrays. We conclude that entire genomes use a simple set of rules and proteins, without transcription, to build a common chromatin architecture. In this study, nucleosomes were assembled using Salt Gradient Dialysis (SGD) on yeast genomic DNA library. Assembled nucleosomes were either left untreated (labelled as "SGD", control), treated with whole cell extract (WCE), mutant extracts (rsc3ts WCE, isw1 isw2 chd1 WCE), purified remodelers; singly or in combinations (RSC, ISW1a, ISW1b, ISW2, INO80, CHD1, SWI/SNF), combinations of mutant extracts and chromatin remodelers or combination of General Regulatory Factors (Abf1, Reb1) and chromatin remodelers. The resulting nucleosome positions were mapped genome-wide using MNase-(anti-H3-ChIP)-Seq.
2016-08-14 | E-GEOD-72106 | biostudies-arrayexpress
Project description:Nucleosomes in active chromatin are dynamic, but whether they have distinct structural conformations is unknown. To identify nucleosomes with alternative structures genome-wide, we used H4S47C-anchored cleavage mapping, which revealed that nucleosomes at 5% of budding yeast nucleosome positions have asymmetric histone-DNA interactions. These asymmetric interactions are enriched at nucleosome positions that flank promoters. Micrococcal nuclease (MNase) sequence-based profiles of asymmetric nucleosome positions revealed a corresponding asymmetry in MNase protection near the dyad axis, suggesting that the loss of DNA contacts around H4S47 is accompanied by protection of the DNA from MNase. Chromatin immunoprecipitation mapping of selected nucleosome remodelers indicated that asymmetric nucleosomes are bound by the RSC chromatin remodeling complex, which is required for maintaining nucleosomes at asymmetric positions. These results imply that the asymmetric nucleosome-RSC complex is a metastable intermediate representing partial unwrapping and protection of nucleosomal DNA on one side of the dyad axis during chromatin remodeling. We have analyzed the chromatin landscape of the yeast genome using paired-end MNase-seq and the chromatin binding of yeast remodelers Swr1, Ino80 and RSC at base-pair resolution using native chromatin immunoprecipitation followed by sequencing (N-ChIP-seq).
2014-12-04 | E-GEOD-59523 | biostudies-arrayexpress