Cell Signaling Technology

Product Pathways - MAPK Signaling

Phospho-MAPKAPK-2 (Thr334) Antibody #3041

Applications Reactivity Sensitivity MW (kDa) Source
W IHC-P H M R Mk Endogenous 49 Rabbit

Applications Key:  W=Western Blotting  IHC-P=Immunohistochemistry (Paraffin)
Reactivity Key:  H=Human  M=Mouse  R=Rat  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

Phospho-MAPKAPK-2 (Thr334) Antibody detects endogenous levels of MAPKAPK-2 protein phosphorylated at threonine 334. It may also cross-react with MAPKAPK-3 phosphorylated at threonine 313.

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Thr334 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 Phospho-MAPKAPK-2 (Thr334) Antibody (upper) or MAPKAPK-2 Antibody #3042 (lower).

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded human breast carcinoma showing, nuclear localization, using Phospho-MAPKAPK-2 (Thr334) Antibody.

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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For Research Use Only. Not For Use In Diagnostic Procedures.

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