GEO DataSets

(Submitter supplied) Competing exonucleases that promote 3’ end maturation or degradation direct quality control of small non-coding RNAs, but how these enzymes distinguish normal from aberrant RNAs is poorly understood. The Pontocerebellar Hypoplasia 7 (PCH7)-associated 3’ exonuclease TOE1 promotes maturation of canonical small nuclear RNAs (snRNAs). Here, we demonstrate that TOE1 achieves specificity towards canonical snRNAs by recognizing Sm complex assembly and cap trimethylation, two features that distinguish snRNAs undergoing correct biogenesis from other small non-coding RNAs. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

6 Samples

Download data: CSV

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

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL15520 GPL24676

109 Samples

Download data: CSV

(Submitter supplied) Competing exonucleases that promote 3’ end maturation or degradation direct quality control of small non-coding RNAs, but how these enzymes distinguish normal from aberrant RNAs is poorly understood. The Pontocerebellar Hypoplasia 7 (PCH7)-associated 3’ exonuclease TOE1 promotes maturation of canonical small nuclear RNAs (snRNAs). Here, we demonstrate that TOE1 achieves specificity towards canonical snRNAs by recognizing Sm complex assembly and cap trimethylation, two features that distinguish snRNAs undergoing correct biogenesis from other small non-coding RNAs. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL15520

103 Samples

Download data: CSV

(Submitter supplied) Processing of RNA polymerase II-transcribed spliceosomal small nuclear RNAs (snRNAs) initiates with cleavage by the Integrator complex, but the factors that subsequently remove 3’ end extensions from metazoan snRNAs have remained unknown. We studied human families with a unique recessive syndromic constellation of pontocerebellar atrophy with ambiguous genitalia, uncovering biallelic inactivating mutations in TOE1, which encodes a conserved unconventional deadenylase. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL15520

154 Samples

Download data: TXT

(Submitter supplied) Polymerases and exonucleases act on 3’ ends of nascent RNAs to promote their maturation or degradation but how the balance between these activities is controlled to dictate the fates of cellular RNAs remains poorly understood. Here, we identify a central role for the human DEDD deadenylase TOE1 in distingushing the fates of small nuclear (sn)RNAs of the spliceosome from genome-encoded snRNA variants. more...

Organism:

Homo sapiens

Type:

Other

Platform:

GPL15520

256 Samples

Download data: CSV

(Submitter supplied) Poly(A)-specific ribonuclease (PARN) and target of EGR1 protein 1 (TOE1) are nuclear granule-associated deadenylases, whose mutations are linked to multiple human diseases. Here, we applied mTAIL-seq and RNA sequencing (RNA-seq) to systematically identify the substrates of PARN and TOE1 and elucidate their molecular functions. We found that PARN and TOE1 do not modulate the length of mRNA poly(A) tails. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18573

4 Samples

Download data: CSV

(Submitter supplied) The 2,2,7-trimethylguanosine (TMG) cap is synthesized by the conserved Tgs1 enzyme, which is abundantly present on snRNAs essential for pre-mRNA splicing. In our study, we characterize new mutations in the Drosophila tgs1 gene and studied their effects on development and on splicing. Utilizing a hypomorphic tgs1 mutation, we uncovered a prominent role of Tgs1 in pre-mRNA splicing, particularly of introns with smaller sizes and weaker splice sites. more...

Organism:

Drosophila melanogaster

Type:

Expression profiling by high throughput sequencing

Platform:

GPL23702

8 Samples

Download data: TXT

(Submitter supplied) Here, we report the genome-wide analysis of snRNAs that are bound to Gemin5 upon protein synthesis inhibition. Upon protein synthesis inhibition, the SMN complex that has a crucial role in the biogenesis of snRNPs dissociates into its subunits, leaving Gemin5 alone. The existence of these subunits was confirmed using a proteomics approach. As Gemin5 has been previously reported to be the RNA-binding protein of the SMN complex, we obtained the sequence of all Gemin5 immunoprecipitated snRNAs. more...

Organism:

Homo sapiens

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9052

1 Sample

Download data: BED

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

Organism:

Arabidopsis thaliana

Type:

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

Platforms:

GPL17639 GPL13222

12 Samples

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(Submitter supplied) RNA polymerase II C-terminal domain (CTD) phosphorylation regulates transcription of both protein-coding mRNAs and non-coding RNAs (ncRNAs). However, understanding about CTD-phosphoregulation in plant ncRNA transcription is still obscure. Here we used Arabidopsis CTD phosphatase-like 4 knock-down lines (CPL4RNAi) and show that CPL4 functions in a genome-wide, conditional 3'-extensions of small nuclear RNA (snRNA) and biogenesis of novel snR-DPGs, which are protein-coding snRNA-mRNA fusion transcripts (snR-Downstream Protein-coding Gene). more...

Organism:

Arabidopsis thaliana

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL17639

6 Samples

Download data: TXT

(Submitter supplied) RNA polymerase II C-terminal domain (CTD) phosphorylation regulates transcription of both protein-coding mRNAs and non-coding RNAs (ncRNAs). However, understanding about CTD-phosphoregulation in plant ncRNA transcription is still obscure. Here we used Arabidopsis CTD phosphatase-like 4 knock-down lines (CPL4RNAi) and show that CPL4 functions in a genome-wide, conditional 3'-extensions of small nuclear RNA (snRNA) and biogenesis of novel snR-DPGs, which are protein-coding snRNA-mRNA fusion transcripts (snR-Downstream Protein-coding Gene). more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13222

6 Samples

Download data: TXT

(Submitter supplied) C. elegans totalRNA profiles of worms treated with RNAi for different Integrator complex genes or L4440 (Control). Worms were grown at 15ºC and samples were taken six days after silencing

Organism:

Caenorhabditis elegans

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL18730 GPL13776

45 Samples

Download data: TXT

(Submitter supplied) The nuclear cap-binding complex (CBC) stimulates multiple steps in several RNA maturation pathways, but how it functions in humans is incompletely understood. For small capped RNAs like pre-snRNAs, the CBC recruits PHAX. Here, we identify the CBCAP complex, composed of CBC, Ars2 and PHAX, and show that both CBCAP and CBC-Ars2 complexes can be reconstituted from recombinant proteins. Ars2 stimulates PHAX binding to the CBC as well as snRNAs 3'-end processing, hereby coupling maturation with export. more...

Organism:

Homo sapiens

Type:

Expression profiling by genome tiling array; Expression profiling by array

Platforms:

GPL4910 GPL6244

12 Samples

Download data: CEL, TXT, XLS

(Submitter supplied) Small nuclear RNAs (snRNAs) are core spliceosome components and mediate pre-mRNA splicing. Here we show that snRNAs contain a regulated and reversible nucleotide modification causing them to exist as two different methyl isoforms, m 1 and m 2 , reflecting the methylation state of the adenosine adjacent to the snRNA cap. We find that snRNA biogenesis involves the formation of an initial m 1 isoform with a single-methylated adenosine (2′-O-methyladenosine, Am), which is then converted to a dimethylated m 2 isoform (N 6 ,2′-O-dimethyladenosine, m 6 Am). more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Other

Platform:

GPL17021

4 Samples

Download data: BEDGRAPH, TXT

(Submitter supplied) Mutations in Integrator complex subunit 6 (INTS6) correlate with different types of tumors. Lack of Integrator complex function, measured by an increased level of unprocessed snRNA, is a prognostic biomarker and correlates with a poorer prognosis in colorectal patients. The transcriptomic profile of all analyzed colorectal tumors shows a strong alteration of the metabolic state of tumor cells compromising standard energy production by mitochondrial respiration, known as the Warburg effect. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18460

18 Samples

Download data: TXT