section_path: Regulatory RNA/RNA interference by miRNAs
section_name: RNA interference by miRNAs
paragraph_text: RNA interference by miRNAs
  
  Post-transcriptional expression levels of many genes can be controlled by RNA interference, in which miRNAs, specific short RNA molecules, pair with mRNA regions and target them for degradation. This antisense -based process involves steps that first process the RNA so that it can base-pair with a region of its target mRNAs. Once the base pairing occurs, other proteins direct the mRNA to be destroyed by nucleases.