GEO DataSets

(Submitter supplied) Heteromorphic sex chromosomes induce potentially deleterious gene expression imbalances that are frequently corrected by dosage compensation (DC). Three distinct molecular strategies to achieve DC have been previously described in nematodes, fruit flies and mammals. The reason for these mechanistic differences remain unclear: Are they a consequence of distinct genomes and gene content, functional or ecological constraints, or random initial commitment to an evolutionary trajectory? Here, we study DC in the malaria mosquito Anopheles gambiae. more...

Organism:

Anopheles gambiae

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL25232

12 Samples

Download data: BW

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

Organism:

Drosophila melanogaster; Anopheles gambiae

Type:

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

Platforms:

GPL25232 GPL23323

32 Samples

Download data: BW

(Submitter supplied) Heteromorphic sex chromosomes induce potentially deleterious gene expression imbalances that are frequently corrected by dosage compensation (DC). Three distinct molecular strategies to achieve DC have been previously described in nematodes, fruit flies and mammals. The reason for these mechanistic differences remain unclear: Are they a consequence of distinct genomes and gene content, functional or ecological constraints, or random initial commitment to an evolutionary trajectory? Here, we study DC in the malaria mosquito Anopheles gambiae. more...

Organism:

Anopheles gambiae; Drosophila melanogaster

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL23323 GPL25232

20 Samples

Download data: TXT

(Submitter supplied) MSL (Male-specific lethal) complex increases transcription on the single X chromosome of Drosophila males in order to equalize expression of X-linked genes between males (XY) and females (XX). The increase in transcript levels correlates with MSL- dependent acetylation of histone H4 at K16 within the bodies of active genes, but identification of the transcriptional step affected has not been possible. more...

Organism:

Drosophila melanogaster

Type:

Expression profiling by high throughput sequencing

Platform:

GPL9061

12 Samples

Download data: TXT

(Submitter supplied) MSL (Male-specific lethal) complex increases transcription on the single X chromosome of Drosophila males in order to equalize expression of X-linked genes between males (XY) and females (XX). The increase in transcript levels correlates with MSL- dependent acetylation of histone H4 at K16 within the bodies of active genes, but identification of the transcriptional step affected has not been possible. more...

Organism:

Drosophila melanogaster

Type:

Expression profiling by high throughput sequencing

Platform:

GPL9061

3 Samples

Download data: TXT

(Submitter supplied) Drosophila MSL complex binds the single male X chromosome to upregulate gene expression to equal that from the two female X chromosomes. However, it has been puzzling that ~25% of transcribed genes on the X do not stably recruit MSL complex. Here, we find that almost all active genes on the X are associated with robust H4 Lys16 acetylation (H4K16ac), the histone modification catalyzed by MSL complex. more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL5636

8 Samples

Download data: PAIR

(Submitter supplied) During sexual dimorphism, the loss of one entire X chromosome in Drosophila males is achieved largely via a broad genome-wide aneuploid effect. Exploring how MSL proteins and two large non coding RNAs (roX1 and roX2) modulate trans-acting aneuploid effect for equality to females, we employ a system biology approach (microarray) to investigate the global aneuploid effect of maleless(mle) mutation by disrupting MSL binding. more...

Organism:

Drosophila melanogaster

Type:

Expression profiling by array

Platform:

GPL72

6 Samples

Download data: CEL, TXT

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

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by genome tiling array; Genome binding/occupancy profiling by high throughput sequencing

4 related Platforms

27 Samples

Download data: PAIR

(Submitter supplied) ChIP-Seq profiles of MSL1, MSL2, MSl3, MOF, MLE, H4K16ac and RNA Polymerase II phosphorlyated on Serine 5 in Drosophila S2 cells

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL13304 GPL9058 GPL9061

17 Samples

Download data: BEDGRAPH

(Submitter supplied) ChIP-chip profiles of MLE, MSL3 and MOF in Drosophila S2 cells

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7107

10 Samples

Download data: PAIR

(Submitter supplied) X-chromosome dosage compensation in Drosophila requires the male-specific lethal (MSL) complex, which up-regulates gene expression from the single male X chromosome. Here, we define X-chromosome-specific MSL binding at high resolution in two male cell lines and in late-stage embryos. We find that the MSL complex is highly enriched over most expressed genes, with binding biased toward the 3' end of transcription units. more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by genome tiling array

Platforms:

GPL5636 GPL5674

14 Samples

Download data: PAIR

(Submitter supplied) Drosophila males double transcription of their single X chromosome to equalize X-linked gene expression with females, which carry two X chromosomes. Increased transcription requires the Male-Specific Lethal (MSL) complex. One of the primary functions of the MSL complex is thought to be enrichment of H4Ac16 on the male X chromosome, a modification linked to elevated transcription. The roX1 and roX2 RNAs are essential but redundant components of the MSL complex. more...

Organism:

Drosophila melanogaster

Type:

Expression profiling by array

Dataset:

GDS2769

Platform:

GPL1322

6 Samples

Download data: CEL

Analysis of third instar larvae lacking noncoding RNAs roX1 and roX2. The roX RNAs are components of the male-specific lethal (MSL) ribonucleoprotein complex, required for equalization of X:A expression levels in males. Results provide insight into the role of roX RNAs in X-chromosome expression.

Organism:

Drosophila melanogaster

Type:

Expression profiling by array, count, 2 genotype/variation sets

Platform:

GPL1322

Series:

GSE3990

6 Samples

Download data: CEL

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

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19951

57 Samples

Download data: BEDGRAPH

(Submitter supplied) The rules according to which transcription factors selectively bind only a small subset of genomic sites from a vast pool of similar sequences are not understood. One of the most challenging tasks in DNA recognition is posed by dosage compensation systems that require the unequivocal distinction between a sex chromosome and all autosomes. In Drosophila melanogaster the male-specific-lethal dosage compensation complex (MSL-DCC) doubles the transcription output of most genes on the X chromosome via chromatin modification, but the nature of this selectivity is not known. more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19951

12 Samples

Download data: BEDGRAPH

(Submitter supplied) The rules according to which transcription factors selectively bind only a small subset of genomic sites from a vast pool of similar sequences are not understood. One of the most challenging tasks in DNA recognition is posed by dosage compensation systems that require the unequivocal distinction between a sex chromosome and all autosomes. In Drosophila melanogaster the male-specific-lethal dosage compensation complex (MSL-DCC) doubles the transcription output of most genes on the X chromosome via chromatin modification, but the nature of this selectivity is not known. more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19951

28 Samples

Download data: BEDGRAPH

(Submitter supplied) The rules according to which transcription factors selectively bind only a small subset of genomic sites from a vast pool of similar sequences are not understood. One of the most challenging tasks in DNA recognition is posed by dosage compensation systems that require the unequivocal distinction between a sex chromosome and all autosomes. In Drosophila melanogaster the male-specific-lethal dosage compensation complex (MSL-DCC) doubles the transcription output of most genes on the X chromosome via chromatin modification, but the nature of this selectivity is not known. more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19951

17 Samples

Download data: BEDGRAPH

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

Organism:

Drosophila melanogaster

Type:

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

Platform:

GPL19951

96 Samples

Download data: BEDGRAPH, TAB

(Submitter supplied) In D. melanogaster males, X chromosome monosomy is compensated by chromosome-wide transcription activation. We found that complete dosage compensation during embryogenesis takes surprisingly long. Although the activating Dosage Compensation Complex (DCC) associates with the chromosome and acetylates histone H4 early, many genes are not compensated. Acetylation levels on gene bodies continue to increase for several hours after gastrulation in parallel with progressive compensation. more...

Organism:

Drosophila melanogaster

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19951

54 Samples

Download data: TAB

(Submitter supplied) In D. melanogaster males, X chromosome monosomy is compensated by chromosome-wide transcription activation. We found that complete dosage compensation during embryogenesis takes surprisingly long. Although the activating Dosage Compensation Complex (DCC) associates with the chromosome and acetylates histone H4 early, many genes are not compensated. Acetylation levels on gene bodies continue to increase for several hours after gastrulation in parallel with progressive compensation. more...

Organism:

Drosophila melanogaster

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19951

42 Samples

Download data: BED, BEDGRAPH