Damage Specific DNA Binding Protein 1
Xeroderma Pigmentosum Group E-Complementing Protein
UV-Damaged DNA-Binding Protein 1
UV-Damaged DNA-Binding Factor
DNA Damage-Binding Protein 1
DNA Damage-Binding Protein A
HBV X-Associated Protein 1
XPE-Binding Factor
DDB P127 Subunit
UV-DDB 1
XPE-BF
XAP-1
XAP1
Damage-Specific DNA Binding Protein 1 (127kD)
Damage-Specific DNA Binding Protein 1, 127kDa
Damage-Specific DNA-Binding Protein 1
UV-DDB1
WHIKERS
DDBA
XPCE
DDBa
XPCe
XPE
The protein encoded by this gene is the large subunit (p127) of the heterodimeric DNA damage-binding (DDB) complex while another protein (p48) forms the small subunit. This protein complex functions in nucleotide-excision repair and binds to DNA following UV damage. Defective activity of this complex causes the repair defect in patients with xeroderma pigmentosum complementation group E (XPE) - an autosomal recessive disorder characterized by photosensitivity and early onset of carcinomas. However, it remains for mutation analysis to demonstrate whether the defect in XPE patients is in this gene or the gene encoding the small subunit. In addition, Best vitelliform mascular dystrophy is mapped to the same region as this gene on 11q, but no sequence alternations of this gene are demonstrated in Best disease patients. The protein encoded by this gene also functions as an adaptor molecule for the cullin 4 (CUL4) ubiquitin E3 ligase complex by facilitating the binding of substrates to this complex and the ubiquitination of proteins. [provided by RefSeq, May 2012]
Forensic Context
A review of human studies identified the DDB1 as part of the ubiquitin-associated proteolytic pathway and found it to be associated with aging in the Framingham Offspring cohort [Solovev et al. DOI:10.1016/j.mad.2019.111192].