GEO DataSets

(Submitter supplied) Chromatin performs numerous functions during cellular differentiation, and therefore it must be capable of adopting a multitude of different structures. How these various structures are established is poorly understood, but we propose that specific histone H2A variants will have a key role in remodelling chromatin during differentiation. Structurally, we show here that the gain of just a single acidic amino acid residue has generated a new mouse ‘H2A.Bbd-like’ histone variant, H2A.Lap1, and that when incorporated into nucleosomal arrays imparts on them unique biophysical properties that are distinct from arrays containing either H2A or human H2A.Bbd. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6246

3 Samples

Download data: CEL

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

Organism:

Mus musculus

Type:

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

Platforms:

GPL11002 GPL6246

7 Samples

Download data: CEL, TAR

(Submitter supplied) Chromatin performs numerous functions during cellular differentiation, and therefore it must be capable of adopting a multitude of different structures. How these various structures are established is poorly understood, but we propose that specific histone H2A variants will have a key role in remodelling chromatin during differentiation. Structurally, we show here that the gain of just a single acidic amino acid residue has generated a new mouse H2A.Bbd-like histone variant, H2A.Lap1, and that when incorporated into nucleosomal arrays imparts on them unique biophysical properties that are distinct from arrays containing either H2A or human H2A.Bbd. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL11002

4 Samples

Download data: TAR

(Submitter supplied) ChIP-seq, CLIP-seq, and mRNA-seq from mouse hippocampal tissues and testes to study the role of histone variant H2A.B

Organism:

Mus musculus

Type:

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

Platforms:

GPL17021 GPL13112

26 Samples

Download data: BW

(Submitter supplied) Ubiquitylation of histones provides an important mechanism regulating chromatin remodeling and gene expression. Recent studies have revealed ubiquitin ligases involved in histone ubiquitylation, yet the responsible enzymes and the function of histone ubiquitination in spermatogenesis remain unclear. Here we show that the ubiquitin ligase UBR2, one of the recognition E3 components of the N-end rule proteolytic pathway, localizes to meiotic chromatin regions, including unsynapsed axial elements linked to chromatin inactivation, and mediates, in combination with the ubiquitin-conjugating enzyme HR6B, the ubiquitination of histone H2A. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL8321

2 Samples

Download data: CEL

(Submitter supplied) Micrococcal nuclease was used to digest mESC nuclei under a mild digestion condition to release the relatively open chromatin, and under an extensive digestion condition to release the genome chromatin. By comparing the genome distribution of mono-nucleasome under these two conditions, open chromatin regions were detected.

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL13112

4 Samples

Download data: BED

(Submitter supplied) While it has been clearly established that well positioned H2A.Z-containing nucleosomes flank the nucleosome depleted region (NDR) at the transcriptional start site (TSS) of active mammalian genes, how this chromatin-based information is transmitted through the cell cycle is unknown. We show here that in trophoblast stem (TS) cells, the level of H2A.Z at promoters decreases during S phase coinciding with homotypic (H2A.Z/H2A.Z) nucleosomes flanking the TSS becoming heterotypic (H2A.Z/H2A). more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL13112 GPL11002

15 Samples

Download data: BED, BEDGRAPH

(Submitter supplied) While it has been clearly established that well positioned H2A.Z-containing nucleosomes flank the nucleosome depleted region (NDR) at the transcriptional start site (TSS) of active mammalian genes 1,2, how this chromatin-based information is transmitted through the cell cycle is unknown. We show here that in trophoblast stem (TS) cells, the level of H2A.Z at promoters decreases during S phase coinciding with homotypic (H2A.Z/H2A.Z) nucleosomes flanking the TSS becoming heterotypic (H2A.Z/H2A). more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6246

9 Samples

Download data: CEL

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

Organism:

Mus musculus

Type:

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

Platforms:

GPL6246 GPL13112 GPL11002

24 Samples

Download data: BED, BEDGRAPH, CEL

(Submitter supplied) To investigate the incorporation dynamics of histone variant H2A.Z, we determined its genomic localization at single nucleosome resolution, as well as the localization of its chromatin remodelers Swr1 and Ino80. We find that Swr1 binding alone is a poor predictor of H2A.Z occupancy levels, and that normal Swr1 and Ino80 localization are actually dependent on H2A.Z. Additionally, we find that H2A.Z’s bimodal incorporation on either side of the NDR is not a general feature of TSS, but is specifically a marker for bidirectional transcription, such that the upstream flanking -1 H2A.Z-containing nucleosome is more appropriately considered as a +1 H2A.Z nucleosome for antisense transcription.

Organism:

Saccharomyces cerevisiae

Type:

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

Platforms:

GPL17342 GPL23014

17 Samples

Download data: BW, TXT, WIG

(Submitter supplied) Background: The ubiquitin-conjugating enzyme HR6B is required for spermatogenesis in mouse. Loss of HR6B results in aberrant histone modification patterns on the trancriptionally silenced X and Y chromosomes (XY body) and on centromeric chromatin in meiotic prophase. We studied the relationship between these chromatin modifications and their effects on global gene expression patterns, in spermatocytes and spermatids. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

8 Samples

Download data: CEL

(Submitter supplied) Histone replacement by small basic proteins, transition proteins (TPs) and protamines (Prms) constitutes an essential step for the successful production of male gametes, yet nothing is known on the underlying functional interplay between histones, TPs and Prms. By studying spermatogenesis in the absence of H2A.L.2, a spermatid-specific histone variant, we identify a new step essential for the "metamorphosis" of nucleosomes to nucleoprotamines. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19057

8 Samples

Download data: BW, TXT

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

Organism:

Homo sapiens

Type:

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

Platforms:

GPL16791 GPL18573

44 Samples

Download data: TSV

(Submitter supplied) We employed an MNase-Transcription Start Site Sequence Capture method to map and determine the accessibility of all nucleosomes, including those that contain H2A.Z, at high coverage for all human Pol II promoters. We uncovered unexpected features of nucleosomal organization in epithelial cells and following transition to a mesenchymal and malignant state. In contrast to the prevailing model, we observe many different types of active and inactive promoter structures that differ in their nucleosome organization and sensitivity to MNase digestion. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18573

16 Samples

Download data: TSV

(Submitter supplied) We employed an MNase-Transcription Start Site Sequence Capture method to map and determine the accessibility of all nucleosomes, including those that contain H2A.Z, at high coverage for all human Pol II promoters. We uncovered unexpected features of nucleosomal organization in epithelial cells and following transition to a mesenchymal and malignant state. In contrast to the prevailing model, we observe many different types of active and inactive promoter structures that differ in their nucleosome organization and sensitivity to MNase digestion. more...

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL16791

28 Samples

Download data: TXT

(Submitter supplied) Plants adapt to changes in their environment by regulating transcription and chromatin organization. The histone H2A variant H2A.Z and the SWI2/SNF2 ATPase BRAHMA have overlapping roles in positively and negatively regulating environmentally responsive genes in Arabidopsis, but the extent of this overlap was uncharacterized. Both have been associated with various changes in nucleosome positioning and stability in different contexts, but their specific roles in transcriptional regulation and chromatin organization need further characterization. more...

Organism:

Arabidopsis thaliana

Type:

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

Platforms:

GPL13222 GPL19580

33 Samples

Download data: BED, BW, TXT, XLS

(Submitter supplied) anti-ACAA2 and anti-OGDH ChIP-high throughput sequencing (Seq) was performed on, normal and 7 day post-transverse aortic constriction, mouse heart tissue (a pool of 3 hearts for each condition)

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19057

5 Samples

Download data: BW

(Submitter supplied) H2A.Z is a highly conserved histone variant involved in several key nuclear processes. It is incorporated into promoters by SWR-C-related chromatin remodeling complexes, but whether it is also actively excluded from non-promoter regions is not clear. Here, we provide genomic and biochemical evidence that RNA polymerase II (RNAPII) elongation-associated histone chaperones FACT and Spt6 both contribute to restricting H2A.Z from intragenic regions. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platforms:

GPL18340 GPL4131

116 Samples

Download data: GPR

(Submitter supplied) Nucleosome is the basic structural unit of chromatin, and its dynamics plays critical roles in the regulation of genome functions. However, how the nucleosome structure is regulated by histone variants in vivo is still largely uncharacterized. Here, by employing Micrococcal nuclease (MNase) digestion of crosslinked chromatin followed by chromatin immunoprecipitation (ChIP) and paired-end sequencing (MNase-X-ChIP-seq), we mapped genome-wide unwrapping states of nucleosomes containing histone variant H2A.Z in mouse embryonic stem (ES) cells. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL24247 GPL13112

35 Samples

Download data: BED

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

Organism:

Mus musculus

Type:

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

Platform:

GPL13112

33 Samples

Download data