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Ubiquitin-dependent turnover of MYC promotes loading of the PAF complex on RNA Polymerase II to drive transcriptional elongation

ABSTRACT: Ubiquitin-dependent turnover of MYC promotes loading of the PAF complex on RNA Polymerase II to drive transcriptional elongation

PROVIDER: PRJNA287454 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR2069980.fastq.gz	Fastqsanger.gz
	SRR2069990.fastq.gz	Fastqsanger.gz
	SRR2069981.fastq.gz	Fastqsanger.gz
	SRR2069991.fastq.gz	Fastqsanger.gz
	SRR2069982.fastq.gz	Fastqsanger.gz

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Ubiquitin-dependent turnover of MYC promotes loading of the PAF complex on RNA Polymerase II to drive transcriptional elongation (ChIP-seq)

Project description:The MYC transcription factor is an unstable protein and its turnover is controlled by the ubiquitin system. Ubiquitination enhances MYC-dependent transactivation, but the underlying mechanism remains unresolved. Here we show that proteasomal turnover of MYC is dispensable for recruitment of RNA polymerase II (RNAPII), but is required to promote transcriptional elongation at MYC target genes. Degradation of MYC stimulates histone acetylation and recruitment of BRD4 and P-TEFb to target promoters, leading to phosphorylation of RNAPII CTD and the release of elongating RNAPII. In the absence of degradation, the RNA polymerase II-associated factor (PAF) complex associates with MYC via interaction of its CDC73 subunit with a conserved domain in the amino-terminus of MYC ("MYC box I"), suggesting that a MYC/PAF complex is an intermediate in transcriptional activation. Since histone acetylation depends on a second highly conserved domain in MYCs amino-terminus ("MYC box II"), we propose that both domains co-operate to transfer elongation factors onto paused RNAPII. ChIP-Seq experiments for MYC-HA (HA-IP) and RNAPII (total,Ser2p,Ser5p) performed in IMEC primary breast epithelial cells. Input-samples were sequenced as controls. The following antibodies were used: HA (Abcam; ab 9110)/ total RNAPII (Santa Cruz; sc-899x)/ Ser2p RNAPII (Abcam; ab 5095)/ Ser5p RNAPII (Covance; MMS-128P)

2016-01-04 | E-GEOD-70001 | biostudies-arrayexpress

Ubiquitin-dependent turnover of MYC promotes loading of the PAF complex on RNA Polymerase II to drive transcriptional elongation (ChIP-seq)

2016-01-04 | GSE70001 | GEO

Ubiquitin-dependent turnover of MYC promotes loading of the PAF complex on RNA Polymerase II to drive transcriptional elongation (RNA-seq)

2016-01-04 | GSE70000 | GEO

Ubiquitin-dependent turnover of MYC promotes loading of the PAF complex on RNA Polymerase II to drive transcriptional elongation (RNA-seq)

Project description:The MYC transcription factor is an unstable protein and its turnover is controlled by the ubiquitin system. Ubiquitination enhances MYC-dependent transactivation, but the underlying mechanism remains unresolved. Here we show that proteasomal turnover of MYC is dispensable for recruitment of RNA polymerase II (RNAPII), but is required to promote transcriptional elongation at MYC target genes. Degradation of MYC stimulates histone acetylation and recruitment of BRD4 and P-TEFb to target promoters, leading to phosphorylation of RNAPII CTD and the release of elongating RNAPII. In the absence of degradation, the RNA polymerase II-associated factor (PAF) complex associates with MYC via interaction of its CDC73 subunit with a conserved domain in the amino-terminus of MYC ("MYC box I"), suggesting that a MYC/PAF complex is an intermediate in transcriptional activation. Since histone acetylation depends on a second highly conserved domain in MYCs amino-terminus ("MYC box II"), we propose that both domains co-operate to transfer elongation factors onto paused RNAPII. RNA-Seq Experiments were performed in a primary breast epithelial cell line (IMEC).The cell line expressed doxycycline-inducible versions of MYC (WT;Kless,Swap=WTN-KC). Where indicated cells were transfected with siRNAs (siCtrl;siSKP2). Where indicated cells were treaed with the proteasome inhibitor MG132 or EtOH as solvent control. DGE was performed by comparing Dox-treated populations expressing either Dox-inducible MYC or a vector control or comparing Dox-induced cells with EtOH (solvent control) treated cells.

2016-01-04 | E-GEOD-70000 | biostudies-arrayexpress

Ubiquitin-dependent turnover of MYC promotes loading of the PAF complex on RNA Polymerase II to drive transcriptional elongation

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2016-01-04 | E-GEOD-70009 | biostudies-arrayexpress

FACT, PAF-C, and CKII

Project description:Protein-protein interaction analysis for RNA Polymerase II and its elongation factors including: the PAF Complex, the FACT Complex, casein kinase II, DSIF, and TFIIF. These studies also characterized a number of casein kinase II phosphorylation sites on the subunits of the PAF Complex.

2015-07-20 | MSV000079197 | MassIVE

Ubiquitin-dependent turnover of MYC promotes loading of the PAF complex on RNA Polymerase II to drive transcriptional elongation

Project description:This SuperSeries is composed of the SubSeries listed below.

2016-01-04 | GSE70009 | GEO

Homo sapiens

Project description:Ubiquitin-dependent turnover of MYC promotes loading of the PAF complex on RNA Polymerase II to drive transcriptional elongation (ChIP-seq)

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Project description:Ubiquitin-dependent turnover of MYC promotes loading of the PAF complex on RNA Polymerase II to drive transcriptional elongation (RNA-seq)

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The PAF complex regulates alternative splicing.

Project description:The conserved Eukaryotic PAF complex binds to transcribing RNA polymerase II to control deposition of histone marks during transcription. Recently its role in alternative polyadenylation (selection of mRNA 3’end cleavage sites by CPSF) was described. In this work we show that the PAF complex also regulates alternative splicing.

2024-11-05 | GSE250246 | GEO

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