MAP Kinase Signaling
FosB Antibody
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| CSTコード |
包装 |
希望納入価格 (円) |
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| #2263S | 100 μL | 46,000 | |
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FosB抗体製品一覧
2263 の推奨プロトコール
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推奨プロトコールはCST社内試験の徹底的なバリデーションに基づいて作成されておりますので、正確かつ再現性の高い結果が得られます。
注：各製品に最適化されたプロトコールをリンクしています。
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2263:
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Immunofluorescence
Immunoprecipitation
Western Blotting
| 用途 (希釈倍率) | |
| ウェスタンブロッティング (1:1,000)、免疫沈降 (1:100)、免疫蛍光細胞染色 (IF-IC) (1:50) |
| 特異性・感度 | |
| 内在性レベルのFosB タンパク質 (FosB とFosB2 Isoform 両方) を検出します。c-Fos、FRA1、FRA2 等の他のFos タンパク質とは交差しません。 |
| 検出タンパク質の分子量 | |
| 38 kDa (FosB2)、48 kDa (FosB) |
| 使用抗原 | |
| ヒトのFosB タンパク質の配列 (合成ペプチド) |
Western Blotting
Western blot analysis of extracts from HeLa cells serum-starved overnight and TPA-stimulated for 4 hours or NIH/3T3 cells serum-starved overnight and serum-stimulated for 4 hours, using FosB Antibody.
IF-IC
Immunofluorescent analysis of paraformaldehyde-fixed HeLa cells starved overnight (left panels) and stimulated for 4 hours with TPA (right panels). Cells were stained with DAPI (upper panels) and analyzed by IF using FosB Antibody (lower panels).
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), that 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).
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Tulchinsky, E. (2000) Histol. Histopathol. 15, 921-928.
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Dobrzanski, P. et al. (1991) Mol. Cell. Biol. 11, 5470-5478.
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Nakabeppu, Y. and Nathans, D. (1991) Cell 64, 751-759.
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Rosenberger, S.F. et al. (1999) J. Biol. Chem. 274, 1124-1130.
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Sasaki, T. et al. (2006) Mol. Cell 24, 63-75.
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Basbous, J. et al. (2007) Mol. Cell. Biol. 27, 3936-3950.
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Kovary, K. and Bravo, R. (1991) Mol. Cell. Biol. 11, 2451-2459.
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Kovary, K. and Bravo, R. (1992) Mol. Cell. Biol. 12, 5015-5023.
PhosphoSitePlus®：
FosB