XRN2 polyclonal antibody

5'-3' exoribonuclease 2 (XRN2) is a nuclear exonuclease that degrades RNA containing a 5’-monophosphate to component mononucleotides. XRN2 also plays an important role in the termination of transcription at the 3’-end of genes by displacing RNA polymerase II (RNAPII) from the DNA strand . According to the ‘torpedo’ model of transcription termination, XRN2 gains access to the 5’ phosphate of the nascent RNA during co-transcriptional polyadenylation site cleavage. XRN2 degrades RNA at a faster rate than RNAPII-mediated RNA synthesis, resulting in the eviction of RNAPII from the template . In addition, XRN2 is essential for maturation of 5.8S and 28S ribosomal RNA and small nucleolar RNA molecules . Several research studies suggest that XRN2 plays a role in the quality control check of RNA molecules. XRN2 co-transcriptionally degrades aberrant nuclear mRNA transcripts that result from defective 5’mRNA capping, splicing, or 3’end formation . XRN2 exonuclease rapidly degrades hypomodified tRNA and excess miRNA molecules, indicating that XRN2 likely regulates tRNA and miRNA quality control as well .