Predicted to enable exonuclease activity. Predicted to act upstream of or within ribosome biogenesis. Predicted to be active in nucleus. Is expressed in several structures, including brain ventricular layer; dorsal root ganglion; submandibular gland primordium; thymus primordium; and tooth. Orthologous to human ISG20L2 (interferon stimulated exonuclease gene 20 like 2). [provided by Alliance of Genome Resources, Apr 2022]