The function of POLE4 (DNA polymerase epsilon 4, accessory subunit, Ensembl gene identifier ENSG00000115350) is as follows. Accessory component of the DNA polymerase epsilon complex (PubMed:10801849). Participates in DNA repair and in chromosomal DNA replication (By similarity). {ECO:0000250|UniProtKB:P27344, ECO:0000269|PubMed:10801849}.