کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1928597 1050375 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
RNAi mediates post-transcriptional repression of gene expression in fission yeast Schizosaccharomyces pombe
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
RNAi mediates post-transcriptional repression of gene expression in fission yeast Schizosaccharomyces pombe
چکیده انگلیسی


• Protein coding genes accumulate anti-sense sRNAs in fission yeast S. pombe.
• RNAi represses protein-coding genes in S. pombe.
• RNAi-mediated gene repression is post-transcriptional.

RNA interference (RNAi) is a gene silencing mechanism conserved from fungi to mammals. Small interfering RNAs are products and mediators of the RNAi pathway and act as specificity factors in recruiting effector complexes. The Schizosaccharomyces pombe genome encodes one of each of the core RNAi proteins, Dicer, Argonaute and RNA-dependent RNA polymerase (dcr1, ago1, rdp1). Even though the function of RNAi in heterochromatin assembly in S. pombe is established, its role in controlling gene expression is elusive. Here, we report the identification of small RNAs mapped anti-sense to protein coding genes in fission yeast. We demonstrate that these genes are up-regulated at the protein level in RNAi mutants, while their mRNA levels are not significantly changed. We show that the repression by RNAi is not a result of heterochromatin formation. Thus, we conclude that RNAi is involved in post-transcriptional gene silencing in S. pombe.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical and Biophysical Research Communications - Volume 444, Issue 2, 7 February 2014, Pages 254–259
نویسندگان
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