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Schizosaccharomyces pombe

ABSTRACT: Suppressor screening reveals common kleisin-hinge interaction in condensin and cohesin, but different modes of regulation

PROVIDER: PRJNA525996 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8705090_1.fastq.gz	Fastqsanger.gz
	SRR8705090_2.fastq.gz	Fastqsanger.gz
	SRR8705100_1.fastq.gz	Fastqsanger.gz
	SRR8705100_2.fastq.gz	Fastqsanger.gz
	SRR8705110_1.fastq.gz	Fastqsanger.gz

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Cohesin mediates DNA loop extrusion and sister chromatid cohesion by distinct mechanisms [Hi-C]

Project description:Cohesin connects CTCF binding sites and other genomic loci in cis to form chromatin loops, and replicated DNA molecules in trans to mediate sister chromatid cohesion. Whether cohesin uses distinct or related mechanisms to perform these functions is unknown. Here we describe a cohesin hinge mutant, which can extrude DNA into loops but is unable to mediate cohesion. Our results suggest that the latter defect arises during cohesion establishment. The observation that cohesin’s cohesion and loop extrusion activities can be separated indicates that cohesin uses distinct mechanisms to perform these two functions. Unexpectedly, the same hinge mutant can also not be stopped by CTCF boundaries as well as wildtype cohesin. This suggests that cohesion establishment and cohesin’s interaction with CTCF boundaries depend on related mechanisms and raises the possibility that both require transient hinge opening to entrap DNA inside the cohesin ring.

2023-10-25 | GSE235771 | GEO

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