Predicted to enable 5'-3' RNA exonuclease activity and RNA binding activity. Predicted to be involved in nuclear-transcribed mRNA catabolic process and rRNA catabolic process. Predicted to be located in cytoplasm. Predicted to be active in nucleus. Human ortholog(s) of this gene implicated in Alzheimer's disease. Orthologous to human XRN1 (5'-3' exoribonuclease 1).