Cell Signaling Technology

Product Pathways - MAPK Signaling

Phospho-p38 MAPK (Thr180/Tyr182) Antibody #9211

Applications Reactivity Sensitivity MW (kDa) Source
W IP IF-IC F H M R Mk Pg Sc Dm (Z) Endogenous 43 Rabbit

Applications Key:  W=Western Blotting  IP=Immunoprecipitation  IF-IC=Immunofluorescence (Immunocytochemistry)  F=Flow Cytometry
Reactivity Key:  H=Human  M=Mouse  R=Rat  Mk=Monkey  Pg=Pig  Sc=S. cerevisiae  Dm=D. melanogaster  Z=Zebrafish
Species cross-reactivity is determined by Western blot.

Protocols

Specificity / Sensitivity

Phospho-p38 MAPK (Thr180/Tyr182) Antibody detects endogenous levels of p38 MAPK only when activated by phosphorylation at threonine 180 and tyrosine 182. This antibody does not cross-react with the phosphorylated forms of either p42/44 MAPK or SAPK/JNK. It will also react with p38 singly phosphorylated at Thr180 and singly phosphorylated at Tyr182.

Source / Purification

Polyclonal antibodies are produced by immunizing rabbits with a synthetic phospho-peptide (KLH-coupled) corresponding to residues around Thr180/Tyr182 of human p38 MAPK. Antibodies are purified by protein A and peptide affinity chromatography.

Western Blotting

Western Blotting

Western blot analysis of extracts from C6 cells, untreated or anisomycin-treated, and NIH/3T3 cells, untreated or UV-treated, using Phospho-p38 MAPK (Thr180/Tyr182) Antibody (upper) or p38 MAPK Antibody #9212 (lower).

Western Blotting

Western Blotting

Western blot analysis of extracts from UV-treated NIH/3T3 cells, using Phospho-p38 MAPK (Thr180/Tyr182) Antibody (upper) or control p38 MAPK Antibody #9212 (lower).

Flow Cytometry

Flow Cytometry

Flow cytometric analysis of Jurkat cells, untreated (green) or anisomycin treated (blue), using Phospho-p38 MAPK (Thr180/Tyr182) Antibody compared to a nonspecific negative control antibody (red).


IF-IC

IF-IC

Confocal immunofluorescent analysis of HeLa cells -/+ UV light, labeled with Phospho-p38 MAPK (green). Absence of staining in untreated cells (left) and nuclear localization in treated cells (right). Red = Actin filaments (phalloidin).

Table

Table

Background

p38 MAP kinase (MAPK), also called RK (1) or CSBP (2), is the mammalian orthologue of the yeast HOG kinase which participates in a signaling cascade controlling cellular responses to cytokines and stress (1-4). Four isoforms of p38 MAP kinase, p38α, β, γ (also known as ERK6 or SAPK3) and δ (also known as SAPK4) have been identified. Similar to the SAPK/JNK pathway, p38 MAP kinase is activated by a variety of cellular stresses including osmotic shock, inflammatory cytokines, lipopolysaccharides (LPS), UV light and growth factors (1-5). MKK3, MKK6 and SEK activate p38 MAP kinase by phosphorylation at Thr180 and Tyr182. Activated p38 MAP kinase has been shown to phosphorylate and activate MAPKAP kinase 2 (3) and to phosphorylate the transcription factors ATF-2 (5), Max (6) and MEF2 (5-8).

  1. Rouse, J. et al. (1994) Cell 78, 1027-1037.
  2. Han, J. et al. (1994) Science 265, 808-811.
  3. Lee, J.C. et al. (1994) Nature 372, 739-746.
  4. Freshney, N.W. et al. (1994) Cell 78, 1039-1049.
  5. Raingeaud, J. et al. (1995) J. Biol. Chem. 270, 7420-7426.
  6. Zervos, A.S. et al. (1995) Proc. Natl. Acad. Sci. USA 92, 10531-10534.
  7. Zhao, M. et al. (1999) Mol. Cell. Biol. 19, 21-30.
  8. Yang, S.H. et al. (1999) Mol. Cell. Biol. 19, 4028-4038.

Application References

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This product is for in vitro research use only and is not intended for use in humans or animals. This product is not intended for use as therapeutic or in diagnostic procedures.

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