Journal
SCIENCE
Volume 293, Issue 5538, Pages 2269-2271Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1062039
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- NIGMS NIH HHS [R01 GM044073] Funding Source: Medline
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An early event in RNA interference (RNAi) is the cleavage of the initiating double-stranded RNA (dsRNA) to short pieces, 21 to 23 nucleotides in length. Here we describe a null mutation in dicer-1 (dcr-1), a gene proposed to encode the enzyme that generates these short RNAs. We find that dcr-1(-/-) animals have defects in RNAi under some, but not all, conditions. Mutant animals have germ line defects that lead to sterility, suggesting that cleavage of dsRNA to short pieces is a requisite event in normal development.
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