Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA376741 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR5284535_1.fastq.gz | Fastqsanger.gz | |||
| SRR5284535_2.fastq.gz | Fastqsanger.gz |
Items per page: 5 1 - 2 of 2 |
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Project description:The identification of RNAs that are recognized by RNA-binding proteins (RNA-BPs) using techniques such as Crosslinking and Immunoprecipitation (CLIP) has revolutionized the genome-wide discovery of RNA-BP RNA targets. Among the different versions of CLIP that have been developed, the use of photoactivable nucleoside analogs has resulted in high efficiency photoactivable ribonucleoside-enhanced CLIP (PAR-CLIP) in vivo. Nonetheless, PAR-CLIP has not yet been applied in prokaryotes. To determine if PAR-CLIP can be used in prokaryotes, we determined suitable conditions for the incorporation of 4-thiouridine (4SU), a photoactivable nucleoside, into E. coli RNA and for the isolation of RNA crosslinked to RNA-BPs of interest. Applying this technique to Hfq, a well-characterized regulator of small RNA (sRNA)-messenger RNA (mRNA) interactions, we showed that PAR-CLIP identified most of the known sRNA targets of Hfq, as well as functionally relevant sites of Hfq-mRNA interactions at nucleotide resolution. Based on our findings, PAR-CLIP represents an improved method to identify both the RNAs and the specific regulatory sites that are recognized by RNA-BPs in prokaryotes.
2022-10-18 | MSV000090547 | MassIVE
Project description:Recent studies have implicated PARP1 in alternative splicing regulation. In addition, PARP1 has been shown to bind RNA in vivo suggesting that it is an RNA-binding protein (RBP). However, a detailed knowledge of the RNA-targets as well as the RNA binding region of PARP1 is unknown. We used Photoactivatable-Ribonucleoside-Enhanced Crosslinking and Immunoprecipitation (PAR-CLIP) in HeLa cells and identified a largely overlapping set ∼22142 of PARP1-RNA binding peaks mapping to mRNAs, of which ∼20484 sites are located in the intronic regions of genes. PARP1 preferentially bound RNA containing a Guanine-rich sequences. Using a bayesian model, we determined positional effects of PARP1 on exon skipping: PARP1 binding upstream and downstream to the skipped exons generally promoted exon inclusion, whereas binding on exons and closer to the skipped exon, promoted exon skipping. Finally, using truncation mutants, we narrowed the PARP1-RNA binding domain to the amino terminus region of the protein. Such studies on transcriptome-wide mapping of RNA-targets by PARP1, present the first step into understanding the role of PARP1 and RNA biogenesis. Our understanding of the role of PARPs and PAR in the transcriptional and post-transcriptional regulation of gene expression through modulation of RNA is still in the early stages. Continued identification and characterization of the functional interplay between PARPs and RNA may provide important insights into the role of PARPs in RNA regulation.
2018-02-14 | GSE95360 | GEO
Project description:This SuperSeries is composed of the following subset Series: GSE21574: Transcriptome-wide identification of RNA-binding protein and microRNA target sites by PAR-CLIP: QKI data GSE21575: Transcriptome-wide identification of RNA-binding protein and microRNA target sites by PAR-CLIP: IGF2BP data GSE21577: Transcriptome-wide identification of RNA-binding protein and microRNA target sites by PAR-CLIP: miRNA inhibition data GSE21918: Transcriptome-wide identification of RNA-binding protein and microRNA target sites by PAR-CLIP: sequencing data Refer to individual Series
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