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CPSF-160 iCLIP

ABSTRACT: CPSF-160 iCLIP

PROVIDER: PRJEB7303 | ENA |

REPOSITORIES: ENA

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Dataset's files

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			Action	DRS
	ERR619060.fastq.gz	Fastqsanger.gz
	ERR619061.fastq.gz	Fastqsanger.gz
	ERR619062.fastq.gz	Fastqsanger.gz
	ERR619063.fastq.gz	Fastqsanger.gz

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CPSF-160 iCLIP

Project description:We performed iCLIP of CPSF-160- GFP as CPSF160 was believed to be the main RNA-binding subunit of CPSF. To this end, we used a stable HeLa cell line that expresses GFP-CPSF160 in a doxycycline (Dox)-dependent manner. After GFP-CPSF160 was induced, we irradiated the cells with UV-C (wavelength=254nm) to induce protein-RNA crosslinks and immunoprecipitated the complex with a GFP antibody.

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Genome-wide analysis of pre-mRNA 3' end processing reveals a decisive role of human cleavage factor I in the regulation of 3' UTR length: CLIP

Project description:Through alternative polyadenylation, human mRNAs acquire longer or shorter 3' untranslated regions, the latter typically associated with higher transcript stability and increased protein production. To understand the dynamics of polyadenylation site usage, we mapped transcriptome‐wide both binding sites of 3' end processing factors CPSF‐160, CPSF‐100, CPSF‐73, CPSF‐30, Fip1, CstF‐64, CstF-64tau, CF Im25, CF Im59, and CF Im68 and 3' end processing sites in HEK293 cells. We found that although binding sites of these factors generally cluster around the poly(A) sites most frequently used in cleavage, CstF‐64/CstF-64tau and CF Im proteins have much higher positional specificity compared to CPSF components. Knockdown of CF Im68 induced a systematic use of proximal polyadenylation sites, indicating that changes in relative abundance of a single 3' end processing factor can modulate the length of 3' untranslated regions transcriptome-wide, and suggesting a mechanism behind the previously observed increase in tumor cell invasiveness upon CF Im68 knockdown. We performed PAR-CLIP experiments for 3' end processing factors including CPSF-30, CPSF-73, CPSF-100, CPSF-160, Fip1, CF Im25, CF Im59, CF Im68, CstF-64, and CstF-64tau.

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