Protein that acts as an endonuclease and breaks down RNA during the process of RNA interference is called dicer.
In antiviral RNA interference (RNAi), dicer plays an important role in processing double-stranded RNA molecules in small-interfering RNAs that guide Argonaut effectors to posttranscriptional suppression of target viral genes.
Dicer is also known as endoribonuclease Dicer or helicase with RNase motif. It is an enzyme that is encoded by the DICER1 gene. As dicer is a part of the RNase III family, it cleaves double-stranded RNA and pre-microRNA into short double-stranded RNA fragments which is called small interfering RNA and microRNA respectively.
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