Cell Signaling Technology

Product Pathways - MAPK Signaling

MAPKAPK-2 Antibody #3042

Applications Reactivity Sensitivity MW (kDa) Source
W IP F H M R Mk (Hm) Endogenous 47, 49 (Phosphorylated). Rabbit

Applications Key:  W=Western Blotting  IP=Immunoprecipitation  F=Flow Cytometry
Reactivity Key:  H=Human  M=Mouse  R=Rat  Hm=Hamster  Mk=Monkey
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.

Protocols

Specificity / Sensitivity

MAPKAPK-2 Antibody detects endogenous levels of total MAPKAPK-2 protein. This antibody does not cross-react with MAPKAPK-3 or -5.

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to the carboxy-terminal region of human MAPKAPK-2. Antibodies are purified by protein A and peptide affinity chromatography.

Western Blotting

Western Blotting

Western blot analysis of extracts from untreated or UV treated HeLa and Cos cells using MAPKAPK-2 antibody.

Flow Cytometry

Flow Cytometry

Flow cytometric analysis of Hela cells using MAPKAPK-2 Antibody (blue) compared to a nonspecific negative control antibody (red).

Background

In response to cytokines, stress and chemotactic factors, MAP kinase-activated protein kinase 2 (MAPKAPK-2) is rapidly phosphorylated and activated. It has been shown that MAPKAPK-2 is a direct target of p38 MAPK (1). Multiple residues of MAPKAPK-2 are phosphorylated in vivo in response to stress. However, only four residues (Thr25, Thr222, Ser272 and Thr334) are phosphorylated by p38 MAPK in an in vitro kinase assay (2). Phosphorylation at Thr222, Ser272 and Thr334 appears to be essential for the activity of MAPKAPK-2 (2). Thr25 is phosphorylated by p42 MAPK in vitro, but is not required for the activation of MAPKAPK-2 (2).

  1. Rouse, J. et al. (1994) Cell 78, 1027-1037.
  2. Ben-Levy, R. et al. (1995) EMBO J. 14, 5920-5930.

Application References

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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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