Size  100ug
Cat code  200895
Species Cross-reactivity  H.M.R.Mk
Key Application  WB
Host  Mouse
Antibody type  Monoclonal antibody
Purified method  
Isotype  IgG2b
Molecular Weight  127kDa
Sensitivity  This antibody detects endogenous levels of DDB1 and does not cross-react with related proteins.
Immunogen  Purified recombinant human DDB1 protein fragments expressed in E.coli.
UniProt Number  Q16531
GeneBank ID  NM_001923
Subcellular location  Cytoplasm.Nucleus.
Formulation  Ascites
Altername  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.
Gene_symbol  XPE;DDBA;XAP1;XPCE;XPE-BF;UV-DDB1.
Summary  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]
UniPort summary  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,histone H3 and histone H4 at sites of UV-induced DNA damage.The ubiquitination of histones may facilitate their removal from the nucleosome and promote subsequent DNA repair.DCX(DDB2) also ubiquitinates XPC,which may enhance DNA-binding by XPC and promote NER.DCX(DTL) plays a role in PCNA-dependent polyubiquitination of CDT1 and MDM2-dependent ubiquitination of TP53 in response to radiation-induced DNA damage and during DNA replication.DCX(ERCC8) (the CSA complex) plays a role in transcription-coupled repair (TCR).May also play a role in ubiquitination of CDKN1B/p27kip when associated with CUL4 and SKP2.
Application Images :  
Western blot detection of DDB1 antibody in C6,COS7,293T,Raji and 3T3 cell lysates using DDB1 antibody (1:1500 diluted).Predicted band size:127KDa.Observed band size:127KDa.