DNA polymerase delta subunit 4 (DNA polymerase delta subunit p12)
This gene encodes the smallest subunit of DNA polymerase delta. DNA polymerase delta possesses both polymerase and 3 to 5 exonuclease activity and plays a critical role in DNA replication and repair. The encoded protein enhances the activity of DNA polymerase delta and plays a role in fork repair and stabilization through interactions with the DNA helicase Bloom syndrome protein. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Mar 2012],function:Required for optimal DNA polymerase delta activity. May contribute to PCNA-dependent activity of DNA polymerase delta.,similarity:Belongs to the DNA polymerase delta subunit 4 family.,subunit:Heterotetramer composed of subunits of 125 kDa, 50 kDa, 66 kDa and 12 kDa. Interacts with WRNIP1. Interacts with POLD4, POLD2, POLD1 and PCNA.,
