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Viral suppression of RNA silencing: 2b wins the Golden Fleece by defeating Argonaute

AuthorsRuiz-Ferrer, Virginia; Voinnet, O.
Issue DateApr-2007
CitationBioEssays, 29 (4) : 319-323 (2007)
AbstractIn plants, virus-derived double-stranded RNA is processed into small interfering (si)RNAs by RNAse III-type enzymes. siRNAs are believed to guide an RNA-induced silencing complex (RISC) to promote sequence-specific degradation (or ‘slicing’) of homologous viral transcripts. This process, called RNA silencing, likely involves Argonaute (AGO) proteins that are known components of plant and animal RISCs. Plant viruses commonly counteract the silencing immune response by producing suppressor proteins, but the molecular basis of their action has remained largely unclear. A recent study by Zhang and colleagues1 now shows that the 2b suppressor of Cucumber mosaic virus directly interacts with Arabidopsis AGO1 and inhibits its slicing activity, suggesting that AGO1 might be a component of the elusive plant antiviral RISC
Description5 páginas, 1 figura -- PAGS nros. 319-323
Publisher version (URL)http://dx.doi.org/10.1002/bies.20556
Appears in Collections:(CIB) Artículos
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