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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.
Applications:

WB

REACTIVITY:

H M R

SENSITIVITY:

Endogenous

MW (kDa):

48

SOURCE:

Rabbit

UniProt ID:

#P05412

Entrez-Gene Id:

3725

Product Information

Product Usage Information

Application Dilution
Western Blotting 1:1000

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C. Do not aliquot the antibody.

Specificity / Sensitivity

Phospho-c-Jun (Thr91) Antibody detects endogenous levels of total c-Jun protein only when phosphorylated at threonine 91. This antibody may also recognize JunB phosphorylated at Thr102.

Species Reactivity:

Human, Mouse, Rat

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues around Thr91 of human c-Jun. Antibodies are purified by protein A and peptide affinity chromatography.

Background

c-Jun is a member of the Jun family containing c-Jun, JunB, and JunD, and is a component of the transcription factor activator protein-1 (AP-1). AP-1 is composed of dimers of Fos, Jun, and ATF family members and binds to and activates transcription at TRE/AP-1 elements (reviewed in 1). Extracellular signals, including growth factors, chemokines, and stress, activate AP-1-dependent transcription. The transcriptional activity of c-Jun is regulated by phosphorylation at Ser63 and Ser73 through SAPK/JNK (reviewed in 2). Knockout studies in mice have shown that c-Jun is essential for embryogenesis (3), and subsequent studies have demonstrated roles for c-Jun in various tissues and developmental processes, including axon regeneration (4), liver regeneration (5), and T cell development (6). AP-1 regulated genes exert diverse biological functions, including cell proliferation, differentiation, and apoptosis, as well as transformation, invasion and metastasis, depending on cell type and context (7-9). Other target genes regulate survival, as well as hypoxia and angiogenesis (8,10). Research studies have implicated c-Jun as a promising therapeutic target for cancer, vascular remodeling, acute inflammation, and rheumatoid arthritis (11,12).

The multisite phosphorylation of the transcription factor c-Jun has been reinvestigated recently (13). The phosphorylation of Thr91 and Thr93 induces a change in the conformation of c-Jun that enhances accessibility of the carboxy-terminal sites to a protein phosphatase(s) (14). The identity of the protein kinase that phosphorylates Thr91 and Thr93 in vivo is unknown.

  1. Jochum, W. et al. (2001) Oncogene 20, 2401-12.
  2. Davis, R.J. (2000) Cell 103, 239-52.
  3. Hilberg, F. et al. (1993) Nature 365, 179-81.
  4. Raivich, G. et al. (2004) Neuron 43, 57-67.
  5. Behrens, A. et al. (2002) EMBO J 21, 1782-90.
  6. Riera-Sans, L. and Behrens, A. (2007) J Immunol 178, 5690-700.
  7. Leppä, S. and Bohmann, D. (1999) Oncogene 18, 6158-62.
  8. Shaulian, E. and Karin, M. (2002) Nat Cell Biol 4, E131-6.
  9. Weiss, C. and Bohmann, D. (2004) Cell Cycle 3, 111-3.
  10. Karamouzis, M.V. et al. (2007) Mol Cancer Res 5, 109-20.
  11. Kim, S. and Iwao, H. (2003) J Pharmacol Sci 91, 177-81.
  12. Dass, C.R. and Choong, P.F. (2008) Pharmazie 63, 411-4.
  13. Morton, S. et al. (2003) EMBO J 22, 3876-86.
  14. Papavassiliou, A.G. et al. (1995) EMBO J 14, 2014-9.

Species Reactivity

Species reactivity is determined by testing in at least one approved application (e.g., western blot).

Western Blot Buffer

IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 5% w/v BSA, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.

Applications Key

WB: Western Blotting

Cross-Reactivity Key

H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected

Trademarks and Patents

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