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Cell Signaling Delta Fosb (D3s8r) Rabbit mAb
List Price
$342.39
Your Price
$342.39
Cell Signaling Delta Fosb (D3s8r) Rabbit mAb - CSIG (Additional S&H or Hazmat Fees May Apply)
NETA PART:
CSIG-14695S
MFG.PART:
14695S
UNSPSC:
12352200
Manufacturer:
Cell Signaling
| Size | 100 µl |
| Reactivity | H M R Mk |
| Sensitivity | Endogenous |
| Molecular Weight (kDa) | 37 |
| Source/Isotype | Rabbit IgG |
| Application/Dilution | {Western Blotting: 1:1000, Immunoprecipitation: 1:50} |
| Storage | Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody. |
| Specificity/Sensitivity | Delta FosB (D3S8R) Rabbit mAb recognizes endogenous levels of total delta FosB protein. This antibody also cross-reacts with an unidentified protein of 85 kDa. This antibody does not cross-react with FosB protein. |
| Species Reactivity | Human, Mouse, Rat, Monkey |
| Source/Purification | Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues near the carboxy terminus of human delta FosB protein. |
| Background | The Fos family of nuclear oncogenes includes c-Fos, FosB, Fos-related antigen 1 (FRA1), and Fos-related antigen 2 (FRA2) (1). While most Fos proteins exist as a single isoform, the FosB protein exists as two isoforms: full-length FosB and a shorter form, FosB2 (Delta FosB), which lacks the carboxy-terminal 101 amino acids (1-3). The expression of Fos proteins is rapidly and transiently induced by a variety of extracellular stimuli, including growth factors, cytokines, neurotransmitters, polypeptide hormones, and stress. Fos proteins dimerize with Jun proteins (c-Jun, JunB, and JunD) to form Activator Protein-1 (AP-1), a transcription factor that binds to TRE/AP-1 elements and activates transcription. Fos and Jun proteins contain the leucine-zipper motif that mediates dimerization and an adjacent basic domain that binds to DNA. The various Fos/Jun heterodimers differ in their ability to transactivate AP-1 dependent genes. In addition to increased expression, phosphorylation of Fos proteins by Erk kinases in response to extracellular stimuli may further increase transcriptional activity (4-6). Phosphorylation of c-Fos at Ser32 and Thr232 by Erk5 increases protein stability and nuclear localization (5). Phosphorylation of FRA1 at Ser252 and Ser265 by Erk1/2 increases protein stability and leads to overexpression of FRA1 in cancer cells (6). Following growth factor stimulation, expression of FosB and c-Fos in quiescent fibroblasts is immediate, but very short-lived, with protein levels dissipating after several hours (7). FRA1 and FRA2 expression persists longer, and appreciable levels can be detected in asynchronously growing cells (8). Deregulated expression of c-Fos, FosB, or FRA2 can result in neoplastic cellular transformation; however, Delta FosB lacks the ability to transform cells (2,3).The delta FosB protein is encoded by the FosB gene and is produced by alternative splicing. This shorter isoform lacks a carboxy-terminal FosB region that contains ubiquitination sites and results in more stable delta FosB protein (9). Induced delta FosB accumulates in select brain regions upon chronic drug use (10-12) where it interacts with JunD to form an active, long-lasting AP-1 complex (13). This complex may represent a molecular switch that helps initiate and maintain the addicted state (14,15). |
| SKU | CSIG-14695S |
|---|---|
| Supplier Part Number | 14695S |
| UM | EA |
| UNSPSC | 12352200 |
| Manufacturer | Cell Signaling |
| MSDS URL | Click here |
| Temperature | -20C |
| CountryOfOrigin | United States |
| ProductLine | CSIG |
| Qty | 1 |
| MinOrderQty | 1 |
| Weight | 7.000000 |
| Lead Time | 5 |
| Hazardous | N |