Is predicted to encode a protein with the following domains: Xrn1, helical domain; 5'-3' exoribonuclease; and Xrn1 helical domain. Is an ortholog of C. elegans xrn-2. In C. elegans, xrn-2 is involved in several processes, including miRNA catabolic process; negative regulation of miRNA-mediated gene silencing; and regulation of vulval development.