DNA polymerase specifically involved in DNA repair. Plays an important role in translesion synthesis, where the normal high fidelity DNA polymerases cannot proceed and DNA synthesis stalls. 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. May play a role in hypermutation at immunoglobulin genes. Forms a Schiff base with 5'-deoxyribose phosphate at abasic sites, but does not have lyase activity. Targets POLI to replication foci. Interacts with REV1. Interacts with monoubiquitinated PCNA, but not unmodified PCNA. Interacts with POLI. Belongs to the DNA polymerase type-Y family. 2 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Protein type: Transferase; DNA repair, damage; EC 188.8.131.52
Cellular Component: nucleoplasm
Molecular Function: protein binding; metal ion binding; damaged DNA binding; DNA-directed DNA polymerase activity
Biological Process: regulation of DNA repair; DNA synthesis during DNA repair; postreplication repair; pyrimidine dimer repair; DNA repair; DNA-dependent DNA replication; response to UV-C
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.