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Key Specifications Table
| Species Reactivity | Key Applications | Host | Format | Antibody Type |
|---|---|---|---|---|
| H | WB, ICC | M | Ascites | Monoclonal Antibody |
| Description | |
|---|---|
| Catalogue Number | MABE1123 |
| Description | Anti-XPB Antibody, clone 15TF2-1B3 |
| Alternate Names |
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| Background Information | Transcription factor II human (TFIIH) basal transcription factor complex helicase XPB subunit (EC 3.6.4.12; UniProt P19447; also known as BTF2 p89, DNA excision repair protein ERCC-3, DNA repair helicase, DNA repair protein complementing XP-B cells, TFIIH 89 kDa subunit, TFIIH basal transcription factor complex 89 kDa subunit, TFIIH p89, Basic transcription factor 2 89 kDa subunit, Xeroderma pigmentosum group B-complementing protein) is encoded by the ERCC3 (also known as BTF2, GTF2H, RAD25, TFIIH, XPB) gene (Gene ID 2071) in human. DNA lesions caused by UV irradiation, drugs, or other environmental factors are eliminated by two nucleotide excision repair (NER) pathways, Global genome repair (GGR) and transcription-coupled repair (TCR). In GGR, the removal of lesions requires their recognition by the repair factor XPC/HR23b and the subsequent opening of the DNA duplex by TFIIH. The resulting single-stranded structure is stabilized by XPA and replication protein A (RPA). XPG is recruited through its interaction with TFIIH on the 3′ side of the lesion and its positioning on the cut site requires RPA. The interaction between XPA and XPB (ERCC1) stimulates the recruitment of ERCC1-XPF on the 5′ side of the DNA lesion. The damaged oligonucleotide can then be removed through the double incision by XPG and ERCC1-XPF endonucleases. In TCR, these factors (except XPC/HR23B) are recruited by the stalled RNA pol II in front of the damage with the help of the CSB and CSA proteins. |
| Product Information | |
|---|---|
| Format | Ascites |
| Presentation | Mouse monoclonal IgG1κ ascites with 0.05% sodium azide. |
| Quality Level | MQ100 |
| Applications | |
|---|---|
| Application | This Anti-XPB Antibody, clone 15TF2-1B3 is validated for use in Western Blotting, Immunocytochemistry for the detection of XPB. |
| Key Applications |
|
| Application Notes | Western Blotting Analysis: A representative lot detected Xpb in murine embryonic fibroblasts (MEFs) and HeLa cells, as well as in transgenic animal-derived MEFs expressing Xpb lacking last 43 C-terminal amino acids (Andressoo, J.O., et al. (2009). Mol Cell Biol.29(5):1276-290). Western Blotting Analysis: A representative lot detected endougenous as well as exogenously expressed Xpb in both U2OS17 whole cell lysate and in THIIF p62 subunit immunoprecipitate (Ziani, S., et al. (2014). J Cell Biol.;206(5):589-598). Western Blotting Analysis: A representative lot detected Xpb in THIIF TTDA subunit immunoprecipitate (Giglia-Mari,G., et al. (2006). PLoS Biol. 4(6): e156). Immunocytochemistry Analysis: A representative lot detected XPB recruitment to the DNA damage sites in the nuclei of UV-irradated HeLa cells (Alekseev, S., et al. (2014). Chem Biol. 21(3):398-407). |
| Biological Information | |
|---|---|
| Immunogen | Recombinant protein corresponding to human XPB. |
| Epitope | N-terminus |
| Clone | 15TF2-1B3 |
| Concentration | Please refer to lot specific datasheet. |
| Host | Mouse |
| Isotype | IgG1κ |
| Species Reactivity |
|
| Antibody Type | Monoclonal Antibody |
| Entrez Gene Number |
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| Gene Symbol |
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| Purification Method | Unpurified |
| UniProt Number |
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| Molecular Weight | ~85 kDa observed. Uncharacterized band(s) may appear in some lysates. |
| Product Usage Statements | |
|---|---|
| Quality Assurance | Evaluated by Western Blotting in HeLa nuclear extract. Western Blotting Analysis: A 1:2,000 dilution of this antibody detected XPB in 10 µg of HeLa nuclear extract. |
| Usage Statement |
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| Storage and Shipping Information | |
|---|---|
| Storage Conditions | Stable for 1 year at -20°C from date of receipt. Handling Recommendations: Upon receipt and prior to removing the cap, centrifuge the vial and gently mix the solution. Aliquot into microcentrifuge tubes and store at -20°C. Avoid repeated freeze/thaw cycles, which may damage IgG and affect product performance. |
| Packaging Information | |
|---|---|
| Material Size | 100 µL |