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- Table of Contents
Facts about DNA damage-binding protein 2.
Needed for DNA repair.
Binds to DDB1 to form the UV- damaged DNA-binding protein complex (the UV-DDB complex).The UV- DDB complex may recognize UV-induced DNA damage and recruit proteins of the nucleotide excision repair pathway (the NER pathway) to initiate DNA repair. The UV-DDB complex preferentially binds to cyclobutane pyrimidine dimers (CPD), 6-4 photoproducts (6-4 PP), apurinic sites and short mismatches.
Human | |
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Gene Name: | DDB2 |
Uniprot: | Q92466 |
Entrez: | 1643 |
Belongs to: |
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WD repeat DDB2/WDR76 family |
damage-specific DNA binding protein 2 (48kD); damage-specific DNA binding protein 2, 48kDa; Damage-specific DNA-binding protein 2; DDB p48 subunit; DDB2; DDBB; DNA damage-binding protein 2; FLJ34321; UV-damaged DNA-binding protein 2; UV-DDB 2; UV-DDB2; xeroderma pigmentosum group E protein; XP5; XPE/DDB2
Mass (kDA):
47.864 kDA
Human | |
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Location: | 11p11.2 |
Sequence: | 11; NC_000011.10 (47214942..47239218) |
Ubiquitously expressed; with highest levels in corneal endothelium and lowest levels in brain. Isoform D1 is highly expressed in brain and heart. Isoform D2, isoform D3 and isoform D4 are weakly expressed.
Nucleus. Accumulates at sites of DNA damage following UV irradiation.
PMID: 8530102 by Dualan R., et al. Chromosomal localization and cDNA cloning of the genes (DDB1 and DDB2) for the p127 and p48 subunits of a human damage-specific DNA binding protein.
PMID: 14751237 by Inoki T., et al. Human DDB2 splicing variants are dominant negative inhibitors of UV- damaged DNA repair.