Enables endodeoxyribonuclease activity. Predicted to be involved in apoptotic DNA fragmentation. Located in cytoplasm and extracellular region. Is expressed in ganglia; medulla oblongata basal plate mantle layer; and ventral grey horn. Used to study cataract. Orthologous to human DNASE2B (deoxyribonuclease 2 beta). [provided by Alliance of Genome Resources, Apr 2022]