DNA Damage-Binding Protein 1 (DDB1) Antibody

Product specifications

Primary Antibodies

DNA Damage-Binding Protein 1 (DDB1)

Rabbit

Human, Mouse, Rat

WB: 1/500 - 1/1000, IHC: 1/50 - 1/100. Optimal dilutions/concentrations should be determined by the end user.

Polyclonal

Unconjugated

IgG

≥ 95% (SDS-PAGE)

Purified by immunogen affinity chromatography.

100 µg

Liquid

ELISA, WB, IHC

PBS, pH 7.3, with 0.02% sodium azide and 50% glycerol.

Shipped within 5-12 working days.

Aliquot and store at -20°C. Avoid repeated freeze/thaw cycles.

No

Q16531

XPE,DDBA,XAP1,XPCE,XPE-BF,UV-DDB1,WHIKERS,UV-damaged DNA-binding factor,DNA damage-binding protein a,DDB p127 subunit

Antibody anti-DDB1

RUO

Concentration: 2 mg/ml - Validity: 12 months.

Descripción

Damage-specific DNA binding protein 1 (DDB1) is a critical component of the ubiquitin-proteasome system, serving as a scaffold protein within the CUL4-DDB1 E3 ubiquitin ligase complex. DDB1 interacts with various substrate receptors, including members of the DCAF (DDB1 and CUL4-associated factors) family, to mediate the recognition and ubiquitination of target proteins. Its role is pivotal in regulating DNA repair, particularly nucleotide excision repair (NER), where it facilitates the removal of UV-induced photoproducts and bulky DNA adducts. DDB1 also contributes to the degradation of proteins involved in transcriptional regulation, cell cycle progression, and genome stability. Structurally, DDB1 contains WD40 domains that mediate interactions with CUL4 and substrate receptors, ensuring versatility and specificity in substrate selection. Dysregulation of DDB1 has been associated with genomic instability and cancer development. Its ubiquitous expression highlights its fundamental role in cellular homeostasis and DNA damage response pathways.

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anti- DDB1 antibody

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.

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anti- DDB1 antibody

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.

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DNA Damage-Binding Protein 1 (DDB1) Antibody

DDB1 Antibody is a Rabbit Polyclonal antibody against DDB1. 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.

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