Accessory component of the DNA polymerase epsilon complex (PubMed:10801849). Participates in DNA repair and in chromosomal DNA replication (By similarity). {ECO:0000250|UniProtKB:P24482, ECO:0000269|PubMed:10801849}. This is the function of Ensembl gene identifier ENSG00000100479 (POLE2, DNA polymerase epsilon 2, accessory subunit).