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 act upstream of or within DNA recombination and DNA repair. Located in mitochondrial inner membrane and nucleus. Orthologous to human APEX2 (apurinic/apyrimidinic endodeoxyribonuclease 2). [provided by Alliance of Genome Resources, Apr 2022]