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Generation of Rdp1-independent primary siRNAs

ABSTRACT: We tested whether we could increase the population of Rdp1-independent primary siRNAs in fission yeast by overexpressing the Dcr1 ribonuclease. We found that in addition to generation of centromeric siRNAs, which was expected, Dcr1 overexpression also resulted in generation of genome-wide primary siRNAs, mapping to many open reading frames.

ORGANISM(S): Schizosaccharomyces pombe

PROVIDER: GSE52532 | GEO | 2013/12/26

SECONDARY ACCESSION(S): PRJNA229166

REPOSITORIES: GEO

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Generation of Rdp1-independent primary siRNAs

Project description:We tested whether we could increase the population of Rdp1-independent primary siRNAs in fission yeast by overexpressing the Dcr1 ribonuclease. We found that in addition to generation of centromeric siRNAs, which was expected, Dcr1 overexpression also resulted in generation of genome-wide primary siRNAs, mapping to many open reading frames. sequencing of 20-30nt sRNAs from total RNA

2013-12-26 | E-GEOD-52532 | biostudies-arrayexpress

Effects of RNAi protein overexpression in mutant cells on H3K9 dimethylation in fission yeast cells

Project description:We test the effects of overexpressing RNAi proteins Dcr1, Rdp1, or Ago1 in wildtype, dcr1∆, ago1∆, or rdp1∆ cells. We find that overexpression does not generally affect H3K9me2 at euchromatic loci, but there are varying effects in H3K9me2 on centromeric heterochromatin.

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Schizosaccharomyces pombe

Project description:Generation of Rdp1-independent primary siRNAs

| PRJNA229166 | ENA

Effects of RNAi protein overexpression in mutant cells on H3K9 dimethylation in fission yeast cells

Project description:We test the effects of overexpressing RNAi proteins Dcr1, Rdp1, or Ago1 in wildtype, dcr1M-bM-^HM-^F, ago1M-bM-^HM-^F, or rdp1M-bM-^HM-^F cells. We find that overexpression does not generally affect H3K9me2 at euchromatic loci, but there are varying effects in H3K9me2 on centromeric heterochromatin. Examination of genome-wide enrichment in H3K9 dimethylation in fission yeast haploid cells

2013-12-26 | E-GEOD-52444 | biostudies-arrayexpress

DamID for Swi6, Rdp1 and Dcr1 in Schizosaccharomyces pombe

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Direct sequencing of polyadenylation sites in fission yeast S. pombe

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Project description:We provide evidence of the generation of Rdp1-mediated secondary siRNAs in vivo in fission yeast. Secondly, we show that the presence of Ago1-associated siRNAs does not guarantee robust silencing. We obtained sequences from gel purified small RNAs of wt and rdp1delta fission yeast cells and FLAG-ago1 associated small RNAs.

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