Journal
BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS
Volume 1779, Issue 11, Pages 668-677Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.bbagrm.2008.07.005
Keywords
siRNA; microRNA; RISC; Ago; mRNA degradation; Translation; Gene expression; RNAi; Dicer; eIF2C
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Funding
- National Institutes of Health [AI41637, AI54696]
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Small RNA molecules have been known and utilized to suppress gene expression for more than a decade. The discovery that these small RNA molecules are endogenously expressed in many organisms and have a critical role in controlling gene expression has led to the arising of a whole new field of research. Termed small interfering RNA (siRNA) or microRNA (miRNA) these similar to 22 nt RNA molecules have the capability to suppress gene expression through various mechanisms once they are incorporated in the multi-protein RNA-Induced Silencing Complex (RISC) and interact with their target mRNA. This review introduces siRNAs and microRNAs in a historical perspective and focuses on the key molecules in RISC, structural properties and mechanisms underlying the process of small RNA regulated post-transcriptional suppression of gene expression. (C) 2008 Elsevier B.V. All rights reserved.
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