Predicted to enable exoribonuclease activity, producing 5'-phosphomonoesters; identical protein binding activity; and nucleic acid binding activity. Involved in hippocampus development; neuron differentiation; and retina development in camera-type eye. Located in nucleus. Biomarker of status epilepticus. Human ortholog(s) of this gene implicated in adenoid cystic carcinoma and lung cancer. Orthologous to human XRN2 (5'-3' exoribonuclease 2). [provided by Alliance of Genome Resources, Apr 2022]