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Dicer, also known as endoribonuclease Dicer or helicase with RNase motif, is an enzyme that in humans is encoded by the DICER1 gene. Being part of the RNase III family, Dicer cleaves double-stranded RNA (dsRNA) and pre-microRNA (pre-miRNA) into short single-stranded RNA fragments called small interfering RNA and microRNA, respectively. These fragments are approximately 20-25 base pairs long with a two-base overhang on the 5' ends. Dicer facilitates the activation of the RNA-induced silencing complex (RISC), which is essential for RNA interference. RISC has a catalytic component Argonaute, which is an endonuclease capable of degrading messenger RNA (mRNA).
Sequence determinants of dsrna processing by dicer
The present invention relates to a DICER cleavage site motif that is a sequence determinant of dsRNA processing by DICER. Using the DICER cleavage site motif according to the present invention can strongly promote the processing of dsRNA by DICER, and thereby promote RNA interference. In addition, the DICER cleavage site motif according to the present invention is an integrated and conserved determinant of substrate recognition by DICER, and can be applied to any technique capable of generating siRNA through DICER processing. Thus, the present invention can greatly contribute to future studies using DICER processing, for example, studies on the biological or therapeutic use of small RNAs.
Owner:SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION +1