GEO DataSets

(Submitter supplied) Histone modifications play an integral role in plant development, but have been poorly studied in woody plants. Investigating chromatin organization in wood-forming tissue and its role in regulating gene expression allows us to understand the mechanisms underlying cellular differentiation during xylogenesis (wood formation) and identify novel functional regions in plant genomes. However, woody tissue poses unique challenges for using high-throughput chromatin immunoprecipitation (ChIP) techniques for studying genome-wide histone modifications in vivo. more...

Organism:

Eucalyptus grandis

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL20030

5 Samples

Download data: BEDGRAPH

(Submitter supplied) Histone modifications play critical roles in regulating developmental genes expression during embryo development in mammals1,2. However, genome-wide analysis of histone modifications in pre-implantation embryos has been impeded by technical difficulties and the scarcity of required materials. Here, by using a small-scale chromatin immunoprecipitation sequencing (ChIP-seq) method3, for the first time, we mapped the genome-wide profile of histone H3 lysine 4 trimethylation (H3K4me3) and histone H3 lysine 27 trimethylation (H3K27me3), associated with gene activation and repression respectively, in mouse pre-implantation embryos. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL13112

67 Samples

Download data: BW

(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; Methylation profiling by high throughput sequencing

Platform:

GPL13112

191 Samples

Download data: BW, FPKM_TRACKING, TXT

(Submitter supplied) Histone modifications are considered as fundamental epigenetic regulators that control many crucial cellular processes 1. However, whether these marks can be passed on from gametes to the next generation in mammals is a long-standing question that remains unclear. By developing a highly sensitive approach, STAR ChIP-seq, we provided a panoramic view of the landscape of H3K4me3, a histone hallmark for transcription initiation 2, from developing gametes to postimplantation embryos. more...

Organism:

Mus musculus; Danio rerio

Type:

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

Platforms:

GPL18480 GPL18171

57 Samples

Download data: BED, TXT

(Submitter supplied) Background. Post-translational modifications of histones play important roles in regulating transcription by modulating the structural properties of the chromatin. In plants, methylation of histone H3 lysine4 (H3K4me) is associated with genes and required for normal plant development. Results. We have characterized the genome-wide distribution patterns of mono-, di- and trimethylation of H3K4 (H3K4me1, H3K4me2 and H3K4me3, respectively) in Arabidopsis thaliana using chromatin immunoprecipitation and high-resolution whole-genome tiling microarrays (ChIP-chip). more...

Organism:

Arabidopsis thaliana

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7639

6 Samples

Download data: CEL

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

Organism:

Arabidopsis thaliana

Type:

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

Platforms:

GPL9062 GPL198

12 Samples

Download data: CEL, TAR, XLS

(Submitter supplied) These ChIP-seq data files are part of a study where a comparison was made between the change in transcription and H3K4 mono-, di-, and tri-methylation levels in the Arabidopsis thaliana genome when plants are subjected to water deficit stress. Keywords: stress response, histone modification

Organism:

Arabidopsis thaliana

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL9062

6 Samples

Download data: TAR, XLS

(Submitter supplied) These microarrays are part of a study where a comparison was made between the change in transcription and H3K4 mono-, di-, and tri-methylation levels (via ChIP-seq) in the Arabidopsis thaliana genome when plants are subjected to water deficit stress. Water deficit stress causes a large number of genes to change their transcript levels, which provided a large set of genes to examine for corresponding chromatine changes. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

6 Samples

Download data: CEL

(Submitter supplied) Histone modifications regulate gene expression in eukaryotes, but their roles in gene expression changes in interspecific hybrids or allotetraploids are poorly understood. Histone modifications can be mapped by immunostaining of metaphase chromosomes at the single cell level and/or by chromatin immunoprecipitation-sequencing (ChIP-seq) for individual genes. Here we examined H3K4me3 density and transcriptome maps in root-tip cells of allotetraploid cotton (Gossypium hirsutum L.). more...

Organism:

Gossypium hirsutum

Type:

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

Platform:

GPL19231

7 Samples

Download data

(Submitter supplied) Histone modifications regulate gene expression in eukaryotes, but their roles in gene expression changes in interspecific hybrids or allotetraploids are poorly understood. Histone modifications can be mapped by immunostaining of metaphase chromosomes at the single cell level and/or by chromatin immunoprecipitation-sequencing (ChIP-seq) for individual genes. Here we examined H3K4me3 density and transcriptome maps in root-tip cells of allotetraploid cotton (Gossypium hirsutum L.). more...

Organism:

Gossypium hirsutum

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19231

4 Samples

Download data

(Submitter supplied) Histone modifications regulate gene expression in eukaryotes, but their roles in gene expression changes in interspecific hybrids or allotetraploids are poorly understood. Histone modifications can be mapped by immunostaining of metaphase chromosomes at the single cell level and/or by chromatin immunoprecipitation-sequencing (ChIP-seq) for individual genes. Here we examined H3K4me3 density and transcriptome maps in root-tip cells of allotetraploid cotton (Gossypium hirsutum L.). more...

Organism:

Gossypium hirsutum

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19231

3 Samples

Download data: FPKM_TRACKING

(Submitter supplied) Very little is known on the nature of epigenetic states in developing zebrafish despite its growing importance as a model organism in developmental biology. We report histone modifications on promoters of pluripotency genes in zebrafish embryos at the mid-late blastula transition (MBT+) stage. We identify three classes of expressed genes based on these profiles: (1) those with a promoter occupied by marks of active genes without any repressive marks; (2) those co-occupied by both activating and repressive modifications; of these genes, klf4 was notably found to be mosaically expressed in the embryo, possibly accounting for this epigenetic pattern; (3) those occupied by repressive marks with, surprisingly, little not acetylated H3K9 or H4. more...

Organism:

Danio rerio

Type:

Expression profiling by array

Platform:

GPL9998

7 Samples

Download data: TXT

(Submitter supplied) The maternal to zygotic transition (MZT) involves the transfer of genome regulation from the oocyte to the embryo and is essential for the formation of totipotent embryos. However, regulatory mechanisms are still poorly understood despite recent progress in mapping the dynamics in RNA transcripts and DNA methylation1-9. Previous studies suggest that dynamic histone modifications may play important roles in MZT10-12, however direct measurements of chromatin states has been hindered by technical difficulties in profiling histone modifications from small quantities of cells. more...

Organism:

Homo sapiens; Mus musculus

Type:

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

Platforms:

GPL17021 GPL16791

65 Samples

Download data: BW, TXT

(Submitter supplied) Bivalent chromatin domains consisting of the activating histone 3 lysine 4 trimethylation (H3K4me3) and repressive histone 3 lysine 27 trimethylation (H3K27me3) histone modifications are enriched at developmental genes that are repressed in embryonic stem cells but active during differentiation. However, it is unknown whether another repressive histone modification, histone 4 lysine 20 trimethylation (H4K20me3), co-localizes with activating histone marks in ES cells. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL21103 GPL17021

5 Samples

Download data: BEDGRAPH

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

Organism:

Neurospora crassa

Type:

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

Platform:

GPL20705

32 Samples

Download data

(Submitter supplied) Sensing and responding to light provides organisms an adaptive advantage, in part by altering gene expression. The complement of light-activated genes in model organisms is largely known, and some of the mechanisms by which proteins modulate the light response are likewise well defined. However, how light alters post translation modifications to chromatin and how changes in chromatin facilitates and/or inhibit changes in gene expression has not been examined in depth. more...

Organism:

Neurospora crassa

Type:

Expression profiling by high throughput sequencing

Platform:

GPL20705

12 Samples

Download data: FPKM_TRACKING, GTF

(Submitter supplied) Sensing and responding to light provides organisms an adaptive advantage, in part by altering gene expression. The complement of light-activated genes in model organisms is largely known, and some of the mechanisms by which proteins modulate the light response are likewise well defined. However, how light alters post translation modifications to chromatin and how changes in chromatin facilitates and/or inhibit changes in gene expression has not been examined in depth. more...

Organism:

Neurospora crassa

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL20705

20 Samples

Download data: BED

(Submitter supplied) The combined heat and drought stress influence the plant growth and development. Switchgrass is an economically important crop due to the availability of high biomass with little water and nutrient requirements. Earlier reports suggested that switchgrass growth and yield highly influenced by heat and drought. The mechanism behind heat and drought stress is not fully understood in switchgrass. This study has undertaken to analyze the epigenetic modification using ChIP-Seq analysis with the activation histone mark H3K4me3. more...

Organism:

Panicum virgatum

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL31915

63 Samples

Download data: BW

(Submitter supplied) Purpose: Increasing biomass yield and quality of feedstock have been a recent interest in switchgrass research. Despite the economic importance of switchgrass, increasing temperature and water deficit are limiting factors to the cultivation of bioenergy crops in the semi-arid areas. The effect of individual drought or heat stress has been studied separately in switchgrass. However, there is relatively limited or no report on the molecular basis of combined abiotic stress tolerance in switchgrass particularly the combination of drought and heat stress. more...

Organism:

Panicum virgatum

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24761

54 Samples

Download data: TSV

(Submitter supplied) To understand the molecular basis that supports the dynamic gene expression programs unique to T cells, we investigated the genomic landscape of activating histone modifications, including histone H3 K9/K14 diacetylation (H3K9acK14ac), H3 K4 trimethylation (H3K4me3), and the repressive histone modification H3 K27 trimethylation (H3K27me3) in primary human T cells. We show that H3K9acK14ac and H3K4me3 are associated with active genes required for T cell function and development, whereas H3K27me3 is associated with silent genes that are involved in development in other cell types. more...

Organism:

Homo sapiens

Type:

Other

Platform:

GPL4812

2 Samples

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