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2013 ; 42
(ä): 217-39
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Molecular mechanisms of RNA interference
#MMPMID23654304
Wilson RC
; Doudna JA
Annu Rev Biophys
2013[]; 42
(ä): 217-39
PMID23654304
show ga
Small RNA molecules regulate eukaryotic gene expression during development and in
response to stresses including viral infection. Specialized ribonucleases and
RNA-binding proteins govern the production and action of small regulatory RNAs.
After initial processing in the nucleus by Drosha, precursor microRNAs
(pre-miRNAs) are transported to the cytoplasm, where Dicer cleavage generates
mature microRNAs (miRNAs) and short interfering RNAs (siRNAs). These
double-stranded products assemble with Argonaute proteins such that one strand is
preferentially selected and used to guide sequence-specific silencing of
complementary target mRNAs by endonucleolytic cleavage or translational
repression. Molecular structures of Dicer and Argonaute proteins, and of
RNA-bound complexes, have offered exciting insights into the mechanisms operating
at the heart of RNA-silencing pathways.
|*Gene Expression Regulation
[MESH]
|*RNA Interference
[MESH]
|Animals
[MESH]
|Argonaute Proteins/chemistry/metabolism
[MESH]
|Cell Nucleus/genetics/metabolism
[MESH]
|Cytoplasm/genetics/metabolism
[MESH]
|Humans
[MESH]
|MicroRNAs/genetics/*metabolism
[MESH]
|RNA, Small Interfering/genetics/*metabolism
[MESH]