DNA polymerase eta is specifically involved in DNA repair. It plays an important role in translesion synthesis, where the normal high fidelity DNA polymerases cannot proceed and DNA synthesis stalls. It also plays an important role in the repair of UV-induced pyrimidine dimers. Depending on the context, it inserts the correct base, but causes frequent base transitions and transversions. It targets POLI to replication foci (referenced from swissprot).
