id author title date pages extension mime words sentences flesch summary cache txt cord-001152-v6uc0ijw Girardi, Erika Identification of RNase L-Dependent, 3′-End-Modified, Viral Small RNAs in Sindbis Virus-Infected Mammalian Cells 2013-11-19 .txt text/plain 7021 383 52 Here, we provide evidence for the presence of discrete small RNAs of viral origin that are not associated with the RNA-induced silencing complex (RISC), that are highly expressed and detected by Northern blot analysis, and that accumulate as 21to 28-nucleotide (nt) species during infection. We report that the cellular antiviral endoribonuclease RNase L cleaves the viral genome, producing in turn the small RNAs. Surprisingly, we uncovered the presence of a modification on the 3′-end nucleotide of SINV-derived viral small RNAs (SvsRNAs) that might be at the origin of their stability. The identification of small RNAs from RNA viruses could be seen either as a result of a productive mechanism for the pathogen (as for virus-encoded miRNAs) or as the consequence of a host response to control the infection by degrading viral RNAs. SINV expresses four enzymes that play key functions during the viral replicative cycle. ./cache/cord-001152-v6uc0ijw.txt ./txt/cord-001152-v6uc0ijw.txt