Revision 1

#8333Store at -20C

1 Kit

(5 x 20 microliters)

Cell Signaling Technology

Orders: 877-616-CELL (2355) [email protected]

Support: 877-678-TECH (8324)

Web: [email protected] cellsignal.com

3 Trask LaneDanversMassachusetts01923USA
For Research Use Only. Not for Use in Diagnostic Procedures.
Product Includes Product # Quantity Mol. Wt Isotype/Source
c-Fos Antibody 4384 20 µl 62 kDa Rabbit 
Phospho-c-Fos (Ser32) (D82C12) XP® Rabbit mAb 5348 20 µl 62 kDa Rabbit IgG
FosB (5G4) Rabbit mAb 2251 20 µl 38 FosB2 48 FosB kDa Rabbit IgG
FRA1 (D80B4) Rabbit mAb 5281 20 µl 40 kDa Rabbit IgG
Phospho-FRA1 (Ser265) (D22B1) Rabbit mAb 5841 20 µl 40 kDa Rabbit IgG
Anti-rabbit IgG, HRP-linked Antibody 7074 100 µl Goat 

Please visit cellsignal.com for individual component applications, species cross-reactivity, dilutions, protocols, and additional product information.

Description

The Fos Family Antibody Sampler Kit provides an economical means to evaluate the Fos family of transcription factors. The kit includes enough antibody to perform two western blot experiments with each primary antibody.

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.

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).

  1. Tulchinsky, E. (2000) Histol Histopathol 15, 921-8.
  2. Dobrazanski, P. et al. (1991) Mol Cell Biol 11, 5470-8.
  3. Nakabeppu, Y. and Nathans, D. (1991) Cell 64, 751-9.
  4. Rosenberger, S.F. et al. (1999) J Biol Chem 274, 1124-30.
  5. Sasaki, T. et al. (2006) Mol Cell 24, 63-75.
  6. Basbous, J. et al. (2007) Mol Cell Biol 27, 3936-50.
  7. Kovary, K. and Bravo, R. (1991) Mol Cell Biol 11, 2451-9.
  8. Kovary, K. and Bravo, R. (1992) Mol Cell Biol 12, 5015-23.

Background References

    Trademarks and Patents

    Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
    All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

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    Revision 1
    #8333

    Fos Family Antibody Sampler Kit

    Fos Family Antibody Sampler Kit: Image 1 Expand Image
    Western blot analysis of extracts from HeLa cells serum-starved overnight and TPA-stimulated for 4 hours, or NIH/3T3 cells and C6 cells serum-starved overnight and serum-stimulated for 4 hours, using FosB (5G4) Rabbit mAb.
    Fos Family Antibody Sampler Kit: Image 2 Expand Image
    Western blot analysis of extracts from HeLa, RAW, and H-4-IIE cells serum-starved overnight and TPA-stimulated for 4 hours, using c-Fos Antibody.
    Fos Family Antibody Sampler Kit: Image 3 Expand Image
    Western blot analysis of extracts from serum-starved HeLa cells, untreated or stimulated with TPA #4174 for 4 hours, using FRA1 (D80B4) Rabbit mAb (upper) and β-Actin Antibody #4967 (lower).
    Fos Family Antibody Sampler Kit: Image 4 Expand Image
    Western blot analysis of extracts from HeLa cells, serum-starved overnight and then either untreated or stimulated for 4 hours with TPA (12-O-Tetradecanoylphorbol-13-Acetate) #4174, using Phospho-c-Fos (Ser32) (D82C12) XP® Rabbit mAb (upper) and c-Fos (9F6) Rabbit mAb #2250 (lower). Antibody phospho-specificity is shown by treating lysates with λ-phosphatase.
    Fos Family Antibody Sampler Kit: Image 5 Expand Image
    Western blot analysis of extracts from HeLa cells, serum-starved overnight, and either left untreated or treated with TPA #4174 for 4 hours, using Phospho-FRA1 (Ser265) (D22B1) Rabbit mAb #5841 (upper) and FRA1 (D80B4) Rabbit mAb #5281 (lower). Antibody phospho-specificity is shown by treating lysates with λ phosphatase.
    Fos Family Antibody Sampler Kit: Image 6 Expand Image
    After the primary antibody is bound to the target protein, a complex with HRP-linked secondary antibody is formed. The LumiGLO® is added and emits light during enzyme catalyzed decomposition.
    Fos Family Antibody Sampler Kit: Image 7 Expand Image
    Immunohistochemical analysis of paraffin-embedded human breast carcinoma, using FosB (5G4) Rabbit mAb.
    Fos Family Antibody Sampler Kit: Image 8 Expand Image
    Confocal immunofluorescent analysis of mouse cerebral cortex both untreated (left) and lambda-phosphatase treated (right) using Phospho-c-Fos (Ser32) (D82C12) XP® Rabbit mAb #5348 (green) and Neurofilament-L (DA2) Mouse mAb #2835 (red). Samples were mounted in ProLong® Gold Antifade Reagent with DAPI #8961 (blue).
    Fos Family Antibody Sampler Kit: Image 9 Expand Image
    Chromatin immunoprecipitations were performed with cross-linked chromatin from PC-12 cells starved overnight and treated with β-NGF #5221 (50ng/ml) for 2h and either Phospho-FRA1 (Ser265) (D22B1) Rabbit mAb or Normal Rabbit IgG #2729 using SimpleChIP® Enzymatic Chromatin IP Kit (Magnetic Beads) #9003. The enriched DNA was quantified by real-time PCR SimpleChIP® Rat CCRN4L Promoter Primers #7983, rat DCLK1 promoter primers, and SimpleChIP® Rat GAPDH Promoter Primers #7964. The amount of immunoprecipitated DNA in each sample is represented as signal relative to the total amount of input chromatin, which is equivalent to one.
    Fos Family Antibody Sampler Kit: Image 10 Expand Image
    Immunohistochemical analysis of paraffin-embedded human breast carcinoma, using FosB (5G4) Rabbit mAb in the presence of control peptide (left) or FosB Blocking Peptide #1042 (right).
    Fos Family Antibody Sampler Kit: Image 11 Expand Image
    Confocal immunofluorescent analysis of HeLa cells, serum-starved (left), TPA-treated (middle) or treated with TPA and λ-phosphatase (right), using Phospho-c-Fos (Ser32) (D82C12) XP® Rabbit mAb (green). Actin filaments have been labeled with DY-554 phalloidin (red).
    Fos Family Antibody Sampler Kit: Image 12 Expand Image
    Immunohistochemical analysis of paraffin-embedded HeLa cells control (left) or PMA-treated (right), using FosB (5G4) Rabbit mAb.
    Fos Family Antibody Sampler Kit: Image 13 Expand Image
    Flow cytometric analysis of HeLa cells serum starved overnight, untreated (blue) or treated with TPA #4174 (200 nM, 4 hr; green) using Phospho-c-Fos (Ser32) (D82C12) XP® Rabbit mAb (solid lines) or concentration-matched Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (dashed lines). Anti-rabbit IgG (H+L), F(ab')2 Fragment (Alexa Fluor® 488 Conjugate) #4412 was used as a secondary antibody.
    Fos Family Antibody Sampler Kit: Image 14 Expand Image
    Confocal immunofluorescent analysis of HeLa cells either serum-starved (left) or TPA-treated (right) and labeled with FosB (5G4) Rabbit mAb (green). Actin filaments have been labeled with Alexa Fluor® 555 phalloidin (red).
    Fos Family Antibody Sampler Kit: Image 15 Expand Image
    Chromatin immunoprecipitations were performed with cross-linked chromatin from PC-12 cells starved overnight and treated with Human β-Nerve Gowth Factor (hβ-NGF) #5221 (50ng/ml) for 2h and Phospho-c-Fos (Ser32) (D82C12) XP® Rabbit mAb, using SimpleChIP® Plus Enzymatic Chromatin IP Kit (Magnetic Beads) #9005. DNA Libraries were prepared using DNA Library Prep Kit for Illumina® (ChIP-seq, CUT&RUN) #56795. The figure shows binding across Fbxl19 gene. For additional ChIP-seq tracks, please download the product datasheet.
    Fos Family Antibody Sampler Kit: Image 16 Expand Image
    Flow cytometric analysis of HeLa cells, untreated (blue) or treated with TPA #4174 (200 nM, 4 hr; green) using FosB (5G4) Rabbit mAb (solid lines) or concentration-matched Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (dashed lines). Anti-rabbit IgG (H+L), F(ab')2 Fragment (Alexa Fluor® 488 Conjugate) #4412 was used as a secondary antibody.
    Fos Family Antibody Sampler Kit: Image 17 Expand Image
    Chromatin immunoprecipitations were performed with cross-linked chromatin from PC-12 cells starved overnight and treated with Human β-Nerve Gowth Factor (hβ-NGF) #5221 (50ng/ml) for 2h and Phospho-c-Fos (Ser32) (D82C12) XP® Rabbit mAb, using SimpleChIP® Plus Enzymatic Chromatin IP Kit (Magnetic Beads) #9005. DNA Libraries were prepared using DNA Library Prep Kit for Illumina® (ChIP-seq, CUT&RUN) #56795. The figure shows binding across chromosome 1 (upper), including Fbxl19 (lower).
    Fos Family Antibody Sampler Kit: Image 18 Expand Image
    Chromatin immunoprecipitations were performed with cross-linked chromatin from PC-12 cells starved overnight and treated with Human β-Nerve Gowth Factor (hβ-NGF) #5221 (50ng/ml) for 2h and either Phospho-c-Fos (Ser32) (D82C12) XP® Rabbit mAb or Normal Rabbit IgG #2729 using SimpleChIP® Enzymatic Chromatin IP Kit (Magnetic Beads) #9003. The enriched DNA was quantified by real-time PCR using SimpleChIP® Rat CCRN4L Promoter Primers #7983, rat DCLK1 promoter primers, and SimpleChIP® Rat GAPDH Promoter Primers #7964. The amount of immunoprecipitated DNA in each sample is represented as signal relative to the total amount of input chromatin, which is equivalent to one.
    Fos Family Antibody Sampler Kit: Image 19 Expand Image
    Chromatin immunoprecipitations were performed with cross-linked chromatin from PC-12 cells starved overnight and treated with β-NGF #5221 (50 ng/ml) for 2 hr and either FosB (5G4) Rabbit mAb or Normal Rabbit IgG #2729 using SimpleChIP® Enzymatic Chromatin IP Kit (Magnetic Beads) #9003. The enriched DNA was quantified by real-time PCR SimpleChIP® Rat CCRN4L Promoter Primers #7983, rat DCLK1 promoter primers, and SimpleChIP® Rat GAPDH Promoter Primers #7964. The amount of immunoprecipitated DNA in each sample is represented as signal relative to the total amount of input chromatin, which is equivalent to one.