GEO DataSets

(Submitter supplied) Small interfering RNAs (siRNAs) direct RNA interference (RNAi) in eukaryotes. In flies, somatic cells produce siRNAs from exogenous double-stranded RNA as a defense against viral infection. Here, we identify 21-nt long, endogenous siRNAs (endo-siRNAs) corresponding to transposons and heterochromatic sequences in the somatic cells of Drosophila melanogaster. We also detected endo-siRNAs complementary to mRNAs: these siRNAs disproportionately mapped to the complementary regions of overlapping mRNAs predicted to form dsRNA in vivo. more...

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL6664

14 Samples

Download data: FA

(Submitter supplied) MicroRNAs (miRNAs) are short (∼ 21-23 nt) regulatory RNAs that guide the degradation or translational repression of their RNA targets. The miRNA “seed”—nucleotides 2 through 7—establishes miRNA target specificity, because this region is the primary determinant of RNA binding by both miRNA and small interfering RNAs. Accurate processing of the miRNA 5´ end is thought to be under strong selective pressure, as a shift by just one nucleotide in the 5´ end of a miRNA would alter its seed sequence, redefining its repertoire of targets. more...

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL6024

40 Samples

Download data: FNA, QUAL

(Submitter supplied) High-throughput sequencing-by-synthesis (Genome Analyzer, Illumina, San Diego, CA, USA) was as for pyrosequencing in Seitz et al. (Curr. Biol. 18, 147 (2008)) except that RNA Ligase 2 [Rnl2(1-249)K227Q] (Addgene, Cambridge, MA, USA) was used for 3´ ligation. Linkers and primers for sequencing-by-synthesis were: 5´ adaptor, 5´-rGrUrU rCrArG rArGrU rUrCrU rArCrA rGrUrC rCrGrA rCrGrA rUrC-3´ (Dharmacon, Lafayette, CO, USA); 3´ preadenylated linkers, 5´-rAppdCdT dGdTdA dGdGdC dAdCdC dAdTdC dAdAdT ddC-3´. more...

Organism:

Drosophila melanogaster

1 Series

14 Samples

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(Submitter supplied) High-throughput sequencing of Drosophila melanogaster small RNAs. total RNA, ~18-26nt RNAs isolated using PAGE, ligation to adapters requires 5' monophosphate and 3' OH Keywords: High-throughput solexa sequencing

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9058

4 Samples

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(Submitter supplied) RNA silencing is a conserved mechanism in which small RNAs trigger various forms of sequence specific gene silencing by guiding Argonaute complexes to target RNAs via base-pairing. RNA silencing is thought to have evolved as a form of nucleic-acid-based immunity to inactivate viruses and transposable elements (TEs). Although the activity of TEs in animals has been thought to be largely restricted to the germline, recent studies have shown that they may also actively transpose in somatic cells, creating somatic mosaicism in animals3. more...

Organism:

Drosophila melanogaster

Type:

Expression profiling by array

Platform:

GPL6452

1 Sample

Download data: TXT

(Submitter supplied) Drosophila endogenous small RNAs bind to Argonaute2 in somatic cells 2008 Annotation Results

Organism:

Drosophila melanogaster

1 Series

1 Sample

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(Submitter supplied) High throughput seqeuncing of small RNAs (PAGE isolated from total RNA or Argonaute immunoprecipitates) from Drosophila melanogaster using the Illumina platform. Adapter ligation requires 5' monophosphate and 3' OH. Full analysis of all libraries in this set is published (Czech B. et al. 2008), leading to the description of endogenous siRNAs in flies. Keywords: Solexa sequences

Organism:

Drosophila melanogaster; Flock House virus

Type:

Non-coding RNA profiling by high throughput sequencing

Platforms:

GPL9058 GPL9402

9 Samples

Download data: TXT

(Submitter supplied) We sequenced small RNA from total RNA samples in two siRNA-pathway mutants in fly ovaries. This submission comes from a modENCODE project. For data usage terms and conditions, please refer to http://www.genome.gov/27528022 and http://www.genome.gov/Pages/Research/ENCODE/ENCODEDataReleasePolicyFinal2008.pdf

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9058

2 Samples

Download data

(Submitter supplied) modENCODE_submission_2834 This submission comes from a modENCODE project of Eric Lai. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We plan to generate a comprehensive catalog of expressed and functional microRNAs, and generate biological evidence for their regulatory activity. We plan also to delineate the primary transcription units of microRNA genes. Finally, we plan to annotate other classes of non-miRNA expressed small RNAs, as least some of which may define novel classes of small RNA genes. more...

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9058

1 Sample

Download data: SAM

(Submitter supplied) modENCODE_submission_2833 This submission comes from a modENCODE project of Eric Lai. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We plan to generate a comprehensive catalog of expressed and functional microRNAs, and generate biological evidence for their regulatory activity. We plan also to delineate the primary transcription units of microRNA genes. Finally, we plan to annotate other classes of non-miRNA expressed small RNAs, as least some of which may define novel classes of small RNA genes. more...

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9058

1 Sample

Download data: SAM

(Submitter supplied) modENCODE_submission_2749 This submission comes from a modENCODE project of Eric Lai. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We plan to generate a comprehensive catalog of expressed and functional microRNAs, and generate biological evidence for their regulatory activity. We plan also to delineate the primary transcription units of microRNA genes. Finally, we plan to annotate other classes of non-miRNA expressed small RNAs, as least some of which may define novel classes of small RNA genes. more...

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9058

1 Sample

Download data: SAM

(Submitter supplied) modENCODE_submission_2748 This submission comes from a modENCODE project of Eric Lai. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We plan to generate a comprehensive catalog of expressed and functional microRNAs, and generate biological evidence for their regulatory activity. We plan also to delineate the primary transcription units of microRNA genes. Finally, we plan to annotate other classes of non-miRNA expressed small RNAs, as least some of which may define novel classes of small RNA genes. more...

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9058

1 Sample

Download data: SAM

(Submitter supplied) modENCODE_submission_2746 This submission comes from a modENCODE project of Eric Lai. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We plan to generate a comprehensive catalog of expressed and functional microRNAs, and generate biological evidence for their regulatory activity. We plan also to delineate the primary transcription units of microRNA genes. Finally, we plan to annotate other classes of non-miRNA expressed small RNAs, as least some of which may define novel classes of small RNA genes. more...

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9058

1 Sample

Download data: SAM

(Submitter supplied) modENCODE_submission_2744 This submission comes from a modENCODE project of Eric Lai. For full list of modENCODE projects, see http://www.genome.gov/26524648 Project Goal: We plan to generate a comprehensive catalog of expressed and functional microRNAs, and generate biological evidence for their regulatory activity. We plan also to delineate the primary transcription units of microRNA genes. Finally, we plan to annotate other classes of non-miRNA expressed small RNAs, as least some of which may define novel classes of small RNA genes. more...

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9058

1 Sample

Download data: SAM

(Submitter supplied) High-throughput sequencing of Drosophila melanogaster small RNAs. total RNA, ~18-26nt RNAs isolated using PAGE, ligation to adapters requires 5' monophosphate and 3' OH

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9058

14 Samples

Download data: TXT

(Submitter supplied) While mammalian somatic cells are incapable of mounting an effective RNA interference (RNAi) response to viral infections, plants and invertebrates are able to generate high levels of functional short interfering RNAs (siRNAs) of viral origin that can effectively control many infections. In Drosophila, the RNAi response is mediated by the Dicer 2 enzyme (dDcr2) acting in concert with two co-factors called Loqs-PD and R2D2. more...

Organism:

Homo sapiens

Type:

Non-coding RNA profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platform:

GPL11154

12 Samples

Download data: BED

(Submitter supplied) Examine the abundance and length of siRNAs produced by mutant Dicer-2 in vivo and in vitro in order to understand the mechanism by which Dicer-2 produces highly precise 21 nt siRNAs.

Organism:

synthetic construct; Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platforms:

GPL21616 GPL21306

4 Samples

Download data: TXT

(Submitter supplied) Transposable elements are a serious threat for genome integrity and their control via small RNA mediated silencing pathways is an ancient strategy. The fruit fly Drosophila melanogaster has two silencing mechanisms that repress TEs expression: endogenous siRNAs (esiRNAs or endo-siRNAs) and Piwi-interacting small RNAs (piRNAs). The biogenesis of endo-siRNAs involves Loqs-PD, which acts predominantly during processing of dsRNA by Dcr-2, and R2D2 that primarily helps to direct siRNAs for loading into Ago2. more...

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL11203

16 Samples

Download data: TXT

(Submitter supplied) In Drosophila, siRNAs are classified as endo- or exo-siRNAs based on their origin. Both are processed from double-stranded RNA precursors by Dcr-2, then loaded into the Argonaute protein Ago2. While exo-siRNAs serve to defend the cell against viruses, endo-siRNAs restrict the spread of selfish DNA in somatic cells, analogous to piRNAs in the germ line. Endo- and exo-siRNAs display a differential requirement for double-stranded RNA binding domain proteins (dsRBPs): R2D2 is needed to load exo-siRNAs into Ago2 while the PD isoform of Loquacious (Loqs-PD) stimulates Dcr-2 during the nucleolytic processing of hairpin-derived endo-siRNAs. more...

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9061

4 Samples

Download data: FA, MAP, TXT

(Submitter supplied) We used SOLiD technology to deep sequence libraries prepared from 18-35 nt PAGE purfied small RNAs derived from female Drosophila. The objective of our study was to compare the impact of R2D2 or loquacious mutantions on different small RNA populations in the fruit fly.

Organism:

Drosophila melanogaster

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9521

3 Samples

Download data: TXT