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Cited by 3,310

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RNA interference is mediated by 21- and 22-nucleotide RNAs

Open access
Elbashir, Sayda M., Lendeckel, Winfried, Tuschl, Thomas·2001·Genes & Development

Abstract

Double-stranded RNA (dsRNA) induces sequence-specific posttranscriptional gene silencing in many organisms by a process known as RNA interference (RNAi). Using a Drosophila in vitro system, we demonstrate that 21- and 22-nt RNA fragments are the sequence-specific mediators of RNAi. The short interfering RNAs (siRNAs) are generated by an RNase III–like processing reaction from long dsRNA. Chemically synthesized siRNA duplexes with overhanging 3′ ends mediate efficient target RNA cleavage in the lysate, and the cleavage site is located near the center of the region spanned by the guiding siRNA. Furthermore, we provide evidence that the direction of dsRNA processing determines whether sense or antisense target RNA can be cleaved by the siRNA–protein complex.

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Metadata

Authors
Elbashir, S. M., Lendeckel, W., & Tuschl, T.
Venue
Genes & Development
Published
2001-01-15
Volume
15
Issue
2
Pages
188-200
ISSN
  • 0890-9369 (ISSN-L)
  • 1549-5477
OpenAlex
W2152993806
Cited by
3,310
References
1
Type
posted content
Language
en
Open access
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CoChat. (2026). Citation check: RNA interference is mediated by 21- and 22-nucleotide RNAs. https://app.cochat.ai/papers/10.1101/gad.862301
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Elbashir, S. M., Lendeckel, W., & Tuschl, T. (2001). RNA interference is mediated by 21- and 22-nucleotide RNAs. Genes & Development. https://doi.org/10.1101/gad.862301

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