The function of Ensembl gene identifier ENSG00000181026 (AEN, apoptosis enhancing nuclease) is as follows. Exonuclease with activity against single- and double-stranded DNA and RNA. Mediates p53-induced apoptosis. When induced by p53 following DNA damage, digests double-stranded DNA to form single- stranded DNA and amplifies DNA damage signals, leading to enhancement of apoptosis. {ECO:0000269|PubMed:16171785, ECO:0000269|PubMed:18264133}.