Product Pathways - MAPK Signaling
p38δ MAPK Antibody #9214
|9214S||100 µl (10 western blots)||---||In Stock||---|
|9214||carrier free and custom formulation / quantity||email request|
|W||1:1000||Human, Rat, Monkey||Endogenous||43||Rabbit|
Species cross-reactivity is determined by western blot.
Applications Key: W=Western Blotting
Specificity / Sensitivity
p38δ MAPK Antibody detects endogenous levels of total p38δ MAPK protein. This antibody does not cross-react with other isoforms of p38 MAPK.
Source / Purification
Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues near the carboxy terminus of p38δ MAPK. Antibodies are purified by protein A and peptide affinity chromatography.
Western blot analysis of extracts from HEK293, THP1 and Ramos cells, using p38δ MAPK Antibody.
Western blot analysis of extracts from Xenopus oocytes overexpressing Myc-tagged p38 isoforms, using p38δ MAPK Antibody (upper) and Myc-tag antibody (lower). Results show the isoform specificity of CST's p38δ MAPK Antibody. (Provided by Dr. Eusebio Perdiguero and Dr. Angel Nebreda, European Molecular Biology Laboratory, Germany.)
p38 MAP kinase (MAPK), also called RK (1) or CSBP (2), is the mammalian orthologue of the yeast HOG kinase that participates in a signaling cascade controlling cellular responses to cytokines and stress (1-4). Four isoforms of p38 MAPK, 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 MAPK is activated by a variety of cellular stresses including osmotic shock, inflammatory cytokines, lipopolysaccharide (LPS), UV light, and growth factors (1-5). MKK3, MKK6, and SEK activate p38 MAPK by phosphorylation at Thr180 and Tyr182. Activated p38 MAPK 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).
SB203580 (4-(4-fluorophenyl)-2-(4-methylsulfinylphenyl)-5-(4-pyridyl)-imidazole) is a selective inhibitor of p38 MAPK. This compound inhibits the activation of MAPKAPK-2 by p38 MAPK and subsequent phosphorylation of HSP27 (9). SB203580 inhibits p38 MAPK catalytic activity by binding to the ATP-binding pocket, but does not inhibit phosphorylation of p38 MAPK by upstream kinases (10).
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- Zervos, A.S. et al. (1995) Proc Natl Acad Sci U S A 92, 10531-4.
- Zhao, M. et al. (1999) Mol Cell Biol 19, 21-30.
- Yang, S.H. et al. (1999) Mol Cell Biol 19, 4028-38.
- Cuenda, A. et al. (1995) FEBS Lett 364, 229-33.
- Kumar, S. et al. (1999) Biochem Biophys Res Commun 263, 825-31.
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This product is intended for research purposes only. The product is not intended to be used for therapeutic or diagnostic purposes in humans or animals.
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