Predicted to enable DNA-(apurinic or apyrimidinic site) endonuclease activity; double-stranded DNA 3'-5' exodeoxyribonuclease activity; and phosphoric diester hydrolase activity. Predicted to be involved in base-excision repair. Predicted to be located in fibrillar center; mitochondrial inner membrane; and nucleoplasm. Predicted to be active in nucleus. Orthologous to human APEX2 (apurinic/apyrimidinic endodeoxyribonuclease 2). [provided by Alliance of Genome Resources, Apr 2022]