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Surprising mechanisms and regulatory roles of yeast transcription factors [RNA-seq]

ABSTRACT: Surprising mechanisms and regulatory roles of yeast transcription factors [RNA-seq]

PROVIDER: PRJNA993168 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25220900_1.fastq.gz	Fastqsanger.gz
	SRR25220900_2.fastq.gz	Fastqsanger.gz
	SRR25221000_1.fastq.gz	Fastqsanger.gz
	SRR25221000_2.fastq.gz	Fastqsanger.gz
	SRR25221100_1.fastq.gz	Fastqsanger.gz

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Histone H3K36 trimethylation is essential for multiple silencing mechanisms in fission yeast.

Project description:In budding yeast, Set2 catalyzes di- and trimethylation of H3K36 (H3K36me2 and H3K36me3) via an interaction between its SRI domain and C-terminal repeats of RNA polymerase II (Pol2) phosphorylated at Ser2 and Ser5 (CTD-S2,5-P). H3K36me2 recruits the Rpd3S histone deacetylase complex to repress cryptic transcription from transcribed regions. In fission yeast, Set2 is also responsible for H3K36 methylation, which represses a subset of RNAs including heterochromatic and subtelomeric RNAs, at least in part via recruitment of Clr6 complex II, a homolog of Rpd3S. Here, we show that CTD-S2Pâdependent interaction of fission yeast Set2 with Pol2 via the SRI domain is required for formation of H3K36me3, but not H3K36me2. H3K36me3 silenced heterochromatic and subtelomeric transcripts through post-transcriptional and transcriptional mechanisms, respectively, whereas H3K36me2 did not. Clr6 complex II appeared not to be responsible for heterochromatic silencing. Our results demonstrate that H3K36 methylation has multiple outputs in fission yeast; these findings provide insight into the multiple roles of H3K36 methylation in metazoans, which have different enzymes for synthesis of H3K36me1/2 and H3K36me3. Gene expression profile at exponentially-growing phase.in the fission yeast deletion mutants of set2.

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