Mitogen-Activated Protein Kinase kinase 3

• Species: Human
• Expression Host: E.coli
• Tag: His- tag
• Purity: 95%
• Molecular Weight: 38.0 kDa.
• Gene Accession Number: NM_002756.

Purification and Quality Control
The His-tag recombinant protein is purified by affinity chromatography in combination with FPLC columns.
The purified MEK3 is greater than 95% homogeneous based on SDS-PAGE analysis.

Unit Definition (Activity)
1 unit equals 1 nanogram of purified protein.

Applications
Recombinant MEK3 can be used for in vitro phosphorylation, dephosphorylation assays and inhibitor screening assay.

Formulation and Storage
The protein is in 20mM Tris-HCl pH7.9,100mM NaCl, 0.2mM EDTA, 1mM DTT and 20% glycerol. Stored at -70°C before use. Avoid repeated freeze thaw cycles.

Synonym
MAPKK3; MEK3; MKK3; PRKMK3 and Homo sapiens mitogen-activated protein kinase kinase 3 (MAP2K3).

Protein Sequence
MSKPPAPNPT PPRNLDSRTF ITIGDRNFEV EADDLVTISE LGRGAYGVVE KVRHAQSGTI
MAVKRIRATV NSQEQKRLLM DLDINMRTVD CFYTVTFYGA LFREGDVWIC MELMDTSLDK
FYRKVLDKNM TIPEDILGEI AVSIVRALEH LHSKLSVIHR DVKPSNVLIN KEGHVKMCDF
GISGYLVDSV AKTMDAGCKP YMAPERINPE LNQKGYNVKS DVWSLGITMI EMAILRFPYE
SWGTPFQQLK QVVEEPSPQL PADRFSPEFV DFTAQCLRKN PAERMSYLEL MEHPFFTLHK
TKKTDIAAFV KEILGEDS

Background
This kinase is activated by mitogenic and environmental stress, and participates in the MAP kinase-mediated signaling cascade. It phosphorylates and thus activates MAPK14/p38-MAPK. This kinase can be activated by insulin, and is necessary for the expression of glucose transporter. Expression of RAS oncogene is found to result in the accumulation of the active form of this kinase, which thus leads to the constitutive activation of MAPK14, and confers oncogenic transformation of primary cells. The inhibition of this kinase is involved in the pathogenesis of Yersina pseudotuberculosis.

Image of SDS-PAGE /Western-blot