Predicted to enable DNA binding activity; chromatin binding activity; and deoxyribonuclease activity. Predicted to be involved in DNA recombination and mismatch repair. Predicted to act upstream of or within humoral immune response mediated by circulating immunoglobulin; isotype switching; and somatic hypermutation of immunoglobulin genes. Predicted to be located in nuclear body and plasma membrane. Orthologous to human EXO1 (exonuclease 1). [provided by Alliance of Genome Resources, Apr 2022]