User:Wayne Decatur/Suppression of RNA Silencing by Viruses

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*[[1rpu]] Carnation italian ringspot virus p19 bound to siRNA
*[[1rpu]] Carnation italian ringspot virus p19 bound to siRNA
*[[1r9f]] Tomato bushy stunt virus p19 bound to siRNA
*[[1r9f]] Tomato bushy stunt virus p19 bound to siRNA
-
*[[2zi0]] Tomato aspermy virus protein 2b bound to siRNA
+
*[[2zi0]] Tomato aspermy virus protein 2b bound to siRNA
*[[2az0]] Flock house virus B2 protein bound to double-stranded RNA (dsRNA)
*[[2az0]] Flock house virus B2 protein bound to double-stranded RNA (dsRNA)
*[[2b9z]] Flock house virus B2 protein solution structure
*[[2b9z]] Flock house virus B2 protein solution structure

Revision as of 00:34, 26 October 2008


Background

RNA interference (RNAi) (also known as post-transcriptional gene silencing (PTGS) or RNA silencing) is an evolutionarily conserved cellular response to the presence of double-stranded (ds) RNA that functions as a gene inactivation system in many eukaryotes and relies on tiny RNAs as the targeting molecules. One function of RNA silencing is to act in surveillance against molecular parasites, such as viruses, several of which rely on double-stranded RNA for replication. Viruses have developed mechanisms to counteract RNAi by providing proteins that sequester the tiny silencing RNAs (siRNAs) targeted against viral RNAs.


Several structures have provided insight into the basis for the molecular interactions involved in suppression of gene silencing (RNAi) by plant and animal viruses.

Related Structures and Topics

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Wayne Decatur

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