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Key Specifications Table
| Species Reactivity | Key Applications | Host | Format | Antibody Type |
|---|---|---|---|---|
| H | WB, ChIP, EMSA | Rb | Serum | Polyclonal Antibody |
| Description | |
|---|---|
| Catalogue Number | ABE1048 |
| Description | Anti-GABPB-1/NRF2b Antibody |
| Alternate Names |
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| Background Information | GA-binding protein subunit beta-1 (EC 3.2.1.3; UniProt Q06547; also known as GABP subunit beta-1, GABP subunit beta-2, GABPB-1, GABPB-2, Nuclear respiratory factor 2, Transcription factor E4TF1-47, Transcription factor E4TF1-53) is encoded by the GABPB1 (also known as E4TF1, E4TF1B, GABPB, GABPB2, NRF2B1, NRF2B2) gene (Gene ID 2553) in human. Initially identified through their interactions with cytochrome C and cytochrome oxidase promoters, GABP (NRF-2) and the related nuclear respiratory factor NRF-1 target many nuclear genes essential for mitochondrial respiratory function, including the mitochondrial transcription specificity factors TFB1M and TFB2M. GABP plays an anti-oxidant, pro-survival role in mitochondrial biogenesis process. GABP is a tetrameric complex composed of the NRF-2alpha (GABPA) and the NRF-2beta (GABPB) subunits. GABPA binds DNA via its ETS domain, and it recruits GABPB, which activates transcription through a glutamine-rich region in its carboxy terminus. GABPB and PRC, a member of PGC-1 family of regulated coactivators, can both interact with host cell factor 1 (HCF-1). PRC can therefore associate with GABP indirectly via HCF-1 and participate in GABP-dependent expression of the mitochondrial transcription factors TFB1M and TFB2M. |
| Product Information | |
|---|---|
| Format | Serum |
| Presentation | Rabbit polyclonal serum with 0.05% sodium azide. |
| Quality Level | MQ100 |
| Applications | |
|---|---|
| Application | This Anti-GABPB-1/NRF2b Antibody is validated for use in Western Blotting, Chromatin Immunoprecipitation (ChIP), Electrophoretic Mobility Shift Assay for the detection of GABPB-1/NRF2b. |
| Key Applications |
|
| Application Notes | Chromatin Immunoprecipitation (ChIP) Analysis: A representative lot detected GABPB (NRF-2beta) occupancy at the TFB1M and TFB2M promoters by ChIP using human embryonic kidney 293FT chromatin preparations (Vercauteren, K., et al. (2008). J Biol Chem. 283(18):12102-12111). Electrophoretic Mobility Shift Assay (EMSA): A representative lot caused a supershift of GABP A2/B2 (NRF-2 α2/β2) heterotetramer-DNA complex in EMSA using in vitro translated GABP (NRF-2) subunits and radiolabeled cytochrome oxidase subunit IV promoter fragment containing tandem GABP (NRF-2) recognition sites (Vercauteren, K., et al. (2008). J Biol Chem. 283(18):12102-12111). Immunoprecipitation Analysis: A representative lot immunoprecipitated GABPB (NRF-2beta)-PRC complex from human embryonic kidney 293FT cell lysate (Vercauteren, K., et al. (2008). J Biol Chem. 283(18):12102-12111). Western Blotting Analysis: A representative lot detected GABPB (NRF-2beta) in U2OS cell lysates (Gleyzer, N., and Scarpulla, R.C. (2011). J. Biol. Chem. 286(46):39715-39725). |
| Biological Information | |
|---|---|
| Immunogen | Recombinant protein corresponding to human GABPB-1/NRF2b. |
| Concentration | Please refer to lot specific datasheet. |
| Host | Rabbit |
| Specificity | Expected to react with all 4 spliced variants: isoform 1 (GABPB-1, Beta-1), isoform 2 (Beta-2), isoform 3 (GABPB-2, Gamma-1), isoform 4 (Gamma-2) |
| Species Reactivity |
|
| Species Reactivity Note | Human. Predicted to react with murine and equine species based on high sequence homology. |
| Antibody Type | Polyclonal 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 | ~48 kDa observed |
| Product Usage Statements | |
|---|---|
| Quality Assurance | Evaluated by Western Blotting in HeLa cell lysate. Western Blotting Analysis: A 1:10,000 dilution of this antibody detected GABPB-1/NRF2b in 10 µg of HeLa cell lysate. |
| Usage Statement |
|
| 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 |