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Cryptic introns in lncRNAs recruit conserved Pir2/ARS2 protein to promote gene repression [RNA-Seq]

ABSTRACT: Cryptic introns in lncRNAs recruit conserved Pir2/ARS2 protein to promote gene repression [RNA-Seq]

PROVIDER: PRJNA557603 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR9866294.fastq.gz	Fastqsanger.gz
	SRR9866295.fastq.gz	Fastqsanger.gz

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Cryptic introns in lncRNAs recruit conserved Pir2/ARS2 protein to promote gene repression [smRNA-seq]

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Cryptic introns in lncRNAs recruit conserved Pir2/ARS2 protein to promote gene repression

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Conserved protein Pir2ARS2 mediates gene repression through cryptic introns in lncRNAs

Project description:Long non-coding RNAs (lncRNAs) are components of epigenetic control mechanisms that ensure appropriate and timely gene expression. The functions of lncRNAs are often mediated through associated gene regulatory activities, but how lncRNAs are distinguished from other RNAs and recruit effector complexes is unclear. Here we utilize the fission yeast Schizosaccharomyces pombe to investigate how lncRNAs engage silencing activities to regulate gene expression in cis. We find that invasion of lncRNA transcription into the downstream gene body incorporates a cryptic intron required for repression of that gene. Our analyses show that lncRNAs containing cryptic introns are targeted by the conserved Pir2ARS2 protein in association with splicing factors, which recruit RNA processing and chromatin modifying activities involved in gene silencing. Pir2 and splicing machinery are broadly required for gene repression. Our finding that human ARS2 also interacts with splicing factors suggests a conserved mechanism mediates gene repression through cryptic introns within lncRNAs.

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Cryptic introns in lncRNAs recruit conserved Pir2/ARS2 protein to promote gene repression

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