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Integrator endonuclease drives promoter-proximal termination at all RNAPII transcribed loci (ChIP-Seq)

ABSTRACT: Integrator endonuclease drives promoter-proximal termination at all RNAPII transcribed loci (ChIP-Seq)

PROVIDER: PRJNA826105 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR18735700_1.fastq.gz	Fastqsanger.gz
	SRR18735700_2.fastq.gz	Fastqsanger.gz
	SRR18735701_1.fastq.gz	Fastqsanger.gz
	SRR18735701_2.fastq.gz	Fastqsanger.gz
	SRR18735702_1.fastq.gz	Fastqsanger.gz

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Integrator endonuclease drives promoter-proximal termination at all RNAPII transcribed loci (TT-seq)

Project description:Pausing of RNA polymerase II (RNAPII) in early elongation is critical for gene regulation. Paused RNAPII can be released into productive elongation by the kinase P-TEFb or targeted for premature termination by the Integrator complex. Integrator comprises endonuclease and phosphatase activities, driving termination through cleavage of nascent RNA and removal of stimulatory phosphorylation. To probe the direct consequences of Integrator activity, we generated a degron system to rapidly deplete the Integrator endonuclease INTS11. Degradation of INTS11 elicits a nearly universal increase in RNAPII escape from promoter regions. However, these RNAPII complexes fail to achieve optimal elongation rates and reveal continued Integrator phosphatase activity. Short transcripts are thus selectively upregulated by INTS11 loss, including many non-coding RNAs, transcription factors and signaling regulators. Together, our data indicate a common function for INTS11 at all RNAPII loci, with differential effects on particular genes, pathways or RNA biotypes reflecting transcript lengths rather than Integrator specificity.

2022-10-28 | GSE200701 | GEO