Project description:We used massively parallel sequencing to discover and characterize small RNAs (sRNAs) from fission yeast Schizosaccharomyces japonicus. We found that, unlike in related S. pombe, a substantial fraction of sRNAs maps to transposons, both telomeric and centromeric. small RNA library from total RNA isolations from Schizosaccharomyces japonicus
Project description:We used massively parallel sequencing to discover and characterize small RNAs (sRNAs) from fission yeast Schizosaccharomyces japonicus. We found that, unlike in related S. pombe, a substantial fraction of sRNAs maps to transposons, both telomeric and centromeric.
Project description:small RNA-seq was performed to identify differences in small RNA complement between wild type and Dcr1 deficent cells in Schizosaccharomyces japonicus.
Project description:Small interfering RNAs (siRNAs) are known to be involved in both transposon silencing and centromere function, leading us to investigate the interplay between these two roles in the Schizosaccharomyces lineage. In S. pombe, the centromeric repeats produce dicer-dependent siRNAs that are required for maintenance of centromeric structure, function and transcriptional silencing via Argonaute-dependent heterochromatin formation13. However, transposons are silenced in S. pombe by RNAi-independent mechanisms and do not produce abundant siRNAs. To investigate whether centromere-directed siRNA production is conserved within the transposon-rich centromeres of S. japonicus, we isolated and sequenced small RNAs from log-phase S. japonicus cultures. The small RNAs have a modal size of 23 nucleotides and 94% map to transposons, both telomeric and centromeric.
Project description:Small interfering RNAs (siRNAs) are known to be involved in both transposon silencing and centromere function, leading us to investigate the interplay between these two roles in the Schizosaccharomyces lineage. In S. pombe, the centromeric repeats produce dicer-dependent siRNAs that are required for maintenance of centromeric structure, function and transcriptional silencing via Argonaute-dependent heterochromatin formation13. However, transposons are silenced in S. pombe by RNAi-independent mechanisms and do not produce abundant siRNAs. To investigate whether centromere-directed siRNA production is conserved within the transposon-rich centromeres of S. japonicus, we isolated and sequenced small RNAs from log-phase S. japonicus cultures. The small RNAs have a modal size of 23 nucleotides and 94% map to transposons, both telomeric and centromeric. Isolation and computational analysis of small RNAs from wild-type S. japonicus
Project description:We looked for the proteins that associate with Pab2, a nuclear poly(A)-binding protein, in Schizosaccharomyces japonicus through the proximity-labeling technology TurboID followed by mass spectrometry. We revealed that Pab2 interacts with two putative RNA-binding proteins, Red5 and Rmn1, and a yeast two-hybrid assay verified these interactions. We also found that Pab2 is associated with the CPSF (mRNA cleavage and polyadenylation specificity factor) component Ppn1, and the Pab2-Ppn1 interaction was confirmed by a yeast two-hybrid assay (and Ppn1 TurboID). These results indicate that Pab2 works with the three proteins mentioned above in Schizosacccharomyces japonicus.
Project description:ChIP-seq was performed to identify differences in H3K9me2 profiles between wild type and Dcr1 deficent cells in Schizosaccharomyces japonicus.