Rabbit DDB2 Polyclonal Antibody | anti-DDB2 antibody

DDB2 (Damage-specific DNA Binding Protein 2, DDBB, FLJ34321, UV-DDB2) (Biotin)

Cat. Num. AAA6413749

• Gene Names: DDB2; DDBB; UV-DDB2
• Reactivity: Human, Mouse, Rat
• Applications: Immunofluorescence, Western Blot, Immunohistochemistry
• Purity: Purified by affinity chromatography.
• Synonyms: DDB2; Polyclonal Antibody; DDB2 (Damage-specific DNA Binding Protein 2; DDBB; FLJ34321; UV-DDB2) (Biotin); anti-DDB2 antibody

• Host: Rabbit
• Reactivity: Human, Mouse, Rat
• Clonality: Polyclonal
• Isotype: IgG
• Specificity: Recognizes DDB2. Species Crossreactivity: human, mouse, rat
• Purity/Purification: Purified by affinity chromatography.
• Form/Format: Supplied as a liquid in PBS, pH 7.2. No preservative added. Labeled with Biotin.
• Concentration: ~1mg/ml (varies by lot)

• Applicable Applications for anti-DDB2 antibody: Immunofluorescence (IF), Western Blot (WB), Immunohistochemistry (IHC)
• Application Notes: IF: 1:50-1:200; WB: 1:500-1:2000; IHC: 1:50-1:200; Applications are based on unconjugated antibody.
• Immunogen: Recombinant protein corresponding to human DDB2.
• Conjugate: Biotin
• Note: Preservative Free
• Preparation and Storage: Store product at 4 degree C if to be used immediately within two weeks. For long-term storage, aliquot to avoid repeated freezing and thawing and store at -20 degree C. Aliquots are stable at -20 degree C for 12 months after receipt. Dilute required amount only prior to immediate use. Further dilutions can be made in assay buffer. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

Western Blot (WB)

(Western blot analysis of extracts of MCF-7 cell line, using DDB2 antibody.)

Immunohistochemistry (IHC)

(Immunohistochemistry of paraffin-embedded human kidney using DDB2 antibody at dilution of 1:200 (200x lens).)

Immunohistochemistry (IHC)

(Immunohistochemistry of paraffin-embedded human kidney cancer using DDB2 antibody at dilution of 1:200 (200x lens).)

Immunohistochemistry (IHC)

(Immunohistochemistry of paraffin-embedded human kidney cancer using DDB2 antibody at dilution of 1:200 (400x lens).)

Immunofluorescence (IF)

(Immunofluorescence analysis of MCF7 cell using DDB2 antibody. Blue: DAPI for nuclear staining.)

Product Categories/Family for anti-DDB2 antibody

Antibodies; DNA Repair/Damage

NCBI and Uniprot Product Information

• NCBI GI #: 12230033
• NCBI GeneID: 1643
• UniProt Accession #: Q92466; Q76E54; Q76E55; Q76E56; Q76E57; B2R875
• Molecular Weight: 427
• NCBI Official Full Name: DNA damage-binding protein 2
• NCBI Official Synonym Full Names: damage-specific DNA binding protein 2, 48kDa
• NCBI Official Symbol: DDB2
• NCBI Official Synonym Symbols: DDBB; UV-DDB2
• NCBI Protein Information: DNA damage-binding protein 2; UV-DDB 2; DDB p48 subunit; UV-damaged DNA-binding protein 2; damage-specific DNA-binding protein 2; xeroderma pigmentosum group E protein
• UniProt Protein Name: DNA damage-binding protein 2
• Protein Family: DNA damage-binding protein
• UniProt Gene Name: DDB2
• UniProt Synonym Gene Names: DDBb; UV-DDB 2
• UniProt Entry Name: DDB2_HUMAN

NCBI Description

This gene encodes a protein that is necessary for the repair of ultraviolet light-damaged DNA. This protein is the smaller subunit of a heterodimeric protein complex that participates in nucleotide excision repair, and this complex mediates the ubiquitylation of histones H3 and H4, which facilitates the cellular response to DNA damage. This subunit appears to be required for DNA binding. Mutations in this gene cause xeroderma pigmentosum complementation group E, a recessive disease that is characterized by an increased sensitivity to UV light and a high predisposition for skin cancer development, in some cases accompanied by neurological abnormalities. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2014]

Uniprot Description

DDB2: 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. Component of the UV-DDB complex which includes DDB1 and DDB2. The UV-DDB complex interacts with monoubiquitinated histone H2A and binds to XPC via the DDB2 subunit. Component of the DCX (DDB1-CUL4-X-box) E3 ubiquitin-protein ligase complex DDB1-CUL4- ROC1 (also known as CUL4-DDB-ROC1 and CUL4-DDB-RBX1), which includes CUL4A or CUL4B, DDB1, DDB2 and RBX1. DDB2 may function as the substrate recognition module within this complex. The DDB1- CUL4-ROC1 complex may associate with the COP9 signalosome, and this inhibits the E3 ubiquitin-protein ligase activity of the complex. A large number of other DCX complexes may also exist in which an alternate substrate targeting subunit replaces DDB2. These targeting subunits are generally known as DCAF (DDB1- and CUL4-associated factor) or CDW (CUL4-DDB1-associated WD40-repeat) proteins. Isoform D1 and isoform D2 do not interact with DDB1. Expression is induced in response to treatment with IR or UV and this requires p53/TP53 activity. Ubiquitously expressed; with highest levels in corneal endothelium and lowest levels in brain. Isoform D1 is highly expressed in brain and heart. Isoform D2, isoform D3 and isoform D4 are weakly expressed. Belongs to the WD repeat DDB2/WDR76 family. 5 isoforms of the human protein are produced by alternative splicing.

Protein type: DNA repair, damage

Chromosomal Location of Human Ortholog: 11p12-p11

Cellular Component: nucleoplasm; protein complex; cell junction

Molecular Function: protein binding; DNA binding; damaged DNA binding; ubiquitin-protein ligase activity

Biological Process: protein autoubiquitination; protein polyubiquitination; nucleotide-excision repair; pyrimidine dimer repair; nucleotide-excision repair, DNA damage removal; DNA repair; response to UV

Disease: Xeroderma Pigmentosum, Complementation Group E