DDB2 antibody
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Name
DDB2 antibody
Category
Primary Antibodies
Provider
FineTest
Reference
FNab02286
Tested Applications
ELISA, WB, IF
Description
Required 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. Also appears to function as the substrate recognition module for the DCX(DDB1-CUL4-X-box) E3 ubiquitin-protein ligase complex DDB1-CUL4-ROC1(also known as CUL4-DDB-ROC1 and CUL4-DDB-RBX1). The DDB1-CUL4-ROC1 complex 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. The DDB1-CUL4-ROC1 complex also ubiquitinates XPC, which may enhance DNA-binding by XPC and promote NER. Isoform D1 and isoform D2 inhibit UV-damaged DNA repair.
Documentos del producto
Especificaciones del producto
| Category | Primary Antibodies |
| Immunogen Target | damage-specific DNA binding protein 2, 48kDa (DDB2) |
| Host | Rabbit |
| Reactivity | Human, Mouse, Rat |
| Recommended Dilution | WB: 1:500-1:2000; IF: 1:20-1:200 |
| Clonality | polyclonal |
| Conjugation | Unconjugated |
| Isotype | IgG |
| Observed MW | 55-60 kDa |
| Purity | ≥95% as determined by SDS-PAGE |
| Purification | Immunogen affinity purified |
| Size 1 | 100µg |
| Form | liquid |
| Tested Applications | ELISA, WB, IF |
| Storage | PBS with 0.02% sodium azide and 50% glycerol pH 7.3, -20℃ for 12 months(Avoid repeated freeze / thaw cycles.) |
| UniProt ID | Q92466 |
| Gene ID | 1643 |
| Alias | XPE,DDBB,UV-DDB2,UV-damaged DNA-binding protein 2,Damage-specific DNA-binding protein 2,DDB p48 subunit |
| Background | Antibody anti-DDB2 |
| Status | RUO |
| Note | Mol. Weight 55-60 kDa |
Background
Damage-specific DNA binding protein 2 (DDB2) is a substrate recognition protein that works in concert with DDB1 within the UV-DDB complex, a subset of the CUL4-DDB1 E3 ubiquitin ligase system. DDB2 plays an essential role in nucleotide excision repair (NER) by recognizing UV-induced DNA damage, such as cyclobutane pyrimidine dimers (CPDs) and 6-4 photoproducts, and recruiting repair factors to the damage site. Its high affinity for damaged DNA and ability to induce chromatin remodeling are key to facilitating repair processes. DDB2 also mediates the ubiquitination and degradation of histones and other chromatin-associated proteins, promoting access to damaged DNA. Mutations or dysregulation of DDB2 have been linked to xeroderma pigmentosum group E (XP-E), a condition characterized by extreme sensitivity to UV light and a high predisposition to skin cancer. Beyond DNA repair, DDB2 is implicated in cell cycle regulation and apoptosis, highlighting its multifunctional role in maintaining genomic integrity.
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