Molecular weight (DA)
127kD
Immunogen
Purified recombinant human DDB1 protein fragments expressed in E.coli.
Specificity
This antibody detects endogenous levels of DDB1 and does not cross-react with related proteins.
Formulation
Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
Purification process (Immunogen)
The antibody was affinity-purified from mouse ascites by affinity-chromatography using epitope-specific immunogen.
Background
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 molecul
Function
function:Required for DNA repair. Binds to DDB2 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. Also appears to function as a component of numerous distinct DCX (DDB1-CUL4-X-box) E3 ubiquitin-protein ligase complexes which mediate the ubiquitination and subsequent proteasomal degradation of target proteins. The functional specificity of the DCX E3 ubiquitin-protein ligase complex is determined by the variable substrate recognition component recruited by DDB1. DCX(DDB2) (also known as DDB1-CUL4-ROC1, CUL4-DDB-ROC1 and CUL4-DDB-RBX1) may ubiquitinate histone H2A, hi
Other name
Damage specific DNA binding protein 1;Damage-specific DNA-binding protein 1;DDB 1;DDB p127 subunit;Ddb1;DDB1_HUMAN;DDBa ;DNA damage binding protein 1;DNA damage-binding protein 1;DNA damage-binding protein a;HBV X-associated protein 1;UV damaged DNA binding factor;UV damaged DNA binding protein 1;UV DDB 1;UV DDB1;UV-damaged DNA-binding factor;UV-damaged DNA-binding protein 1;UV-DDB 1;UV-DDB1;X associated protein 1;XAP 1;XAP-1;XAP1;Xeroderma pigmentosum group E complementing protein;Xeroderma pigmentosum group E-complementing protein;XPCE;XPE;XPE BF;XPE binding factor;XPE-BF;XPE-binding factor.
Fields
>>Nucleotide excision repair;>>Ubiquitin mediated proteolysis;>>Hepatitis B;>>Human immunodeficiency virus 1 infection;>>Viral carcinogenesis
Human protein sequence Database
Q16531
Mouse protein sequence database
Q3U1J4
Rat protein sequence database
Cellular localization
Cytoplasm . Nucleus . Primarily cytoplasmic (PubMed:10777491, PubMed:11673459). Translocates to the nucleus following UV irradiation and subsequently accumulates at sites of DNA damage (PubMed:10777491, PubMed:11673459). .
Tissue expression
Brain,Epidermis,Fetal lung,Peripheral blood,Placenta,Skin,
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