Predicted to enable 3'-5'-RNA exonuclease activity; nucleic acid binding activity; and nucleotide binding activity. Predicted to be involved in exonucleolytic trimming to generate mature 3'-end of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA). Predicted to be part of nuclear exosome (RNase complex). Is an ortholog of C. elegans
crn-3. In C. elegans,
crn-3 is involved in apoptotic DNA fragmentation and apoptotic cell clearance.