نتایج جستجو برای: rna degradation
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In higher eukaryotes, mRNA degradation and RNA-based gene silencing occur in cytoplasmic foci referred to as processing bodies (P-bodies). In protozoan parasites, the presence of P-bodies and their putative role in mRNA decay have yet to be comprehensively addressed. Identification of P-bodies might provide information on how mRNA degradation machineries evolved in lower eukaryotes. Here, we us...
RNA transcripts in which all guanosine residues are replaced by inosine are degraded at a highly accelerated rate when incubated in extracts from HeLa cells, sheep uterus or pig brain. We report here the partial purification and characterization of a novel ribonuclease, referred to as I-RNase, that is responsible for the degradation of inosine-containing RNA (I-RNA). I-RNase is Mg2+ dependent a...
Rrp6-mediated nuclear RNA surveillance tunes eukaryotic transcriptomes through noncoding RNA degradation and mRNA quality control, including exosomal RNA decay and transcript retention triggered by defective RNA processing. It is unclear whether Rrp6 can positively regulate noncoding RNAs and whether RNA retention occurs in normal cells. Here we report that AtRRP6L1, an Arabidopsis Rrp6-like pr...
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