GEO DataSets

(Submitter supplied) We have developed a new genome-wide protocol for nascent transcription analysis at high resolution in the yeast Saccharomyces cerevisiae. This protocol is based in run-on labeling of nascent RNA with a biotinylated precursor. We call it BioGRO for biotin-based genomic run-on.

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by genome tiling array; Genome binding/occupancy profiling by genome tiling array

Platform:

GPL18871

7 Samples

Download data: BAR, CEL, TXT

(Submitter supplied) Understanding chromatin dynamics is a key to other related processes, including DNA replication, transcription and recombination. As a first step, recently, an increasing amount of effort has been devoted to precisely define nucleosome positioning in different organisms. The most popular method to do so is digestion by Micrococcal nuclease (MNase), nowadays followed by ultrasequencing of the generated fragments. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL13821 GPL13272

3 Samples

Download data: BED

(Submitter supplied) In order to maintain the appropriate level of mRNA it is necessary coordinate simultaneously all the steps along the mRNA life cycle. It has been shown that several factors act in the regulation of gene expression as global coordinators. Thus, some kind of information is transferred from the nucleus to the cytoplasm, imprinted in the mRNA. In this way, it is conceivable the existence of mechanisms that ensure the balance between mRNA synthesis and degradation through the information flow from the cytoplasm to the nucleus and vice versa, as a crosstalk among both process to ensure the proper mRNA homeostasis in the cell. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL13620

18 Samples

Download data: TXT

(Submitter supplied) Activation of transcription requires alteration of chromatin by complexes that increase the accessibility of nucleosomal DNA. Removing nucleosomes from regulatory sequences has been proposed to play a significant role in activation. We tested whether changes in nucleosome occupancy occurred on the set of genes that are activated by the unfolded protein response (UPR). We observed no decrease in occupancy on most promoters, gene bodies, and enhancers. more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platforms:

GPL13304 GPL17275

64 Samples

Download data: BEDGRAPH

(Submitter supplied) In this study we developed MPE-seq, a method for the genome-wide characterization of chromatin that involves the digestion of nuclei with methidiumpropyl-EDTA-Fe(II) [MPE-Fe(II)] followed by massively parallel sequencing. Like micrococcal nuclease (MNase), MPE-Fe(II) preferentially cleaves the linker DNA between nucleosomes. We also performed MNase-seq as a comparison. We further performed ChIP-seq using chromatin samples obtained by MPE-Fe(II) or MNase digestion of nuclei.

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platforms:

GPL13112 GPL17021

27 Samples

Download data: BEDGRAPH, TXT

(Submitter supplied) Background: Analysis of the effect that chromatin structure has on the expression patterns of eukaryotic genes has recently expanded knowledge of the complex influence genome accessibility has on genome function. Interlaced with regular nucleosomal patterning are other mobile and labile sub-nucleosomal-sized protein structures bound to the genome such as transcription factors (TF), initiation complexes, and modified nucleosomes. more...

Organism:

Arabidopsis thaliana

Type:

Genome binding/occupancy profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platform:

GPL17639

16 Samples

Download data: CSV, WIG

(Submitter supplied) 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. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL17342 GPL13821

17 Samples

Download data: BED

(Submitter supplied) Chromatin accessibility plays a fundamental role in gene regulation. One mechanism to regulate accessibility is nucleosome placement, which is often measured by quantifying protection of DNA from enzymatic digestion. We introduce a metric that uses micrococcal nuclease (MNase) digestion in a novel manner to measure chromatin accessibility by combining information from several digests of increasing depths. more...

Organism:

Homo sapiens; Mus musculus; Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platforms:

GPL16791 GPL17275 GPL17021

74 Samples

Download data: BEDGRAPH

(Submitter supplied) We employed an MNase-Transcription Start Site Sequence Capture method to map and determine the accessibility of all nucleosomes during immune stimulus, at high coverage for all human Pol II promoters. We uncovered features of nucleosomal organization and sensitivity to MNase digestion in B-lymphoblastoid cells. We also find that transcription factor binding is associated with sensitive nucleosomes.

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL16791

16 Samples

Download data: TXT

(Submitter supplied) Aim and Methods: To understand the precise role of Spt4 in budding yeast, various high throughput sequencing techniques were used. Nucleosome positions were studied using MNase-seq in WT and spt4∆ cells. The position of RNAPII was examined using NET-seq in spt4∆ cells or cells in which Spt4 has been anchored away to the cytoplasm (Spt4 AA). RNAPII was also mapped in cells in which Spt5 has been anchored away to the cytoplasm (Spt5 AA). more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing; Expression profiling by high throughput sequencing; Other; Methylation profiling by high throughput sequencing

Platform:

GPL19756

46 Samples

Download data: BIGWIG, BW, TXT

(Submitter supplied) Intact nuclei from an asynchronous population of W303 Saccharomyces cerevisiae in log-phase growth were subjected to a 16-minute DNase I digestion (0.1 U/μL) at 37 °C. DNA was then recovered, and single-end Illumina sequencing libraries were prepared using the Crawford DNase-seq method (Song and Crawford, 2010).

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL13821

2 Samples

Download data: CSV

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Zea mays

Type:

Genome binding/occupancy profiling by genome tiling array

Platforms:

GPL19041 GPL19042

34 Samples

Download data: PAIR

(Submitter supplied) The eukaryotic nuclear genome is organized into the fundamental units of chromatin, nucleosomes. The positions and biochemical states of nucleosomes on DNA can regulate protein-DNA interactions, and in turn influence DNA-templated events. Despite the increasing number of genome-wide maps of nucleosome position, how global changes in nucleosome position relate to changes in gene expression is poorly understood. more...

Organism:

Zea mays

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL19042

24 Samples

Download data: PAIR, TSV

(Submitter supplied) The eukaryotic nuclear genome is organized into the fundamental units of chromatin, nucleosomes. The positions and biochemical states of nucleosomes on DNA can regulate protein-DNA interactions, and in turn influence DNA-templated events. Despite the increasing number of genome-wide maps of nucleosome position, how global changes in nucleosome position relate to changes in gene expression is poorly understood. more...

Organism:

Zea mays

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL19041

10 Samples

Download data: PAIR, TSV

(Submitter supplied) The classic view of nucleosome organization at active promoters is that two well-positioned nucleosomes flank a nucleosome-depleted region (NDR). However, this view has been recently challenged by contradictory reports as to whether a distinct set of wider (≳150 bp) NDRs instead contain unusually unstable Micrococcal Nuclease-sensitive “fragile” particles, thought to be nucleosomal because of their size. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL17342

63 Samples

Download data: BEDGRAPH, PDF

(Submitter supplied) Eukaryotic chromosomal DNA is assembled into regularly spaced nucleosomes, which play a central role in gene regulation by determining accessibility of control regions. The nucleosome contains ~147 bp of DNA wrapped ~1.7 times around a central core histone octamer. The linker histone, H1, binds both to the nucleosome, sealing the DNA coils, and to the linker DNA between nucleosomes, directing chromatin folding. more...

Organism:

Synthetic plasmid; Mus musculus; Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing

4 related Platforms

31 Samples

Download data: BW, FA, TXT

(Submitter supplied) Genome-wide mapping of nucleosomes has revealed a great deal about the relationships between chromatin structure and control of gene expression, and has led to mechanistic hypotheses regarding the rules by which chromatin structure is established. High-throughput sequencing has recently become the technology of choice for chromatin mapping studies, yet analysis of these experiments is still in its infancy. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL9134

5 Samples

Download data: TXT

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Homo sapiens

Type:

Genome variation profiling by genome tiling array

Platforms:

GPL8720 GPL8581

117 Samples

Download data: GPR

(Submitter supplied) The following CGH experiments were conducted on four sectors (S1-S4) from a single primary ductal carcinoma tumor (T20) using the Sector-Ploidy-Profiling (SPP) Approach. SPP involves macro-dissecting the tumor, flow-sorting nuclei by differences in total genomic DNA content and profiling the genome of the tumor subpopulations.

Organism:

Homo sapiens

Type:

Genome variation profiling by genome tiling array

Platform:

GPL8720

4 Samples

Download data: GPR

(Submitter supplied) The following CGH experiments were conducted on six sectors (S1-S6) from a single primary ductal carcinoma tumor (T19) using the Sector-Ploidy-Profiling (SPP) Approach. SPP involves macro-dissecting the tumor, flow-sorting nuclei by differences in total genomic DNA content and profiling the genome of the tumor subpopulations.

Organism:

Homo sapiens

Type:

Genome variation profiling by genome tiling array

Platform:

GPL8720

7 Samples

Download data: GPR