Mouse Cot kinase (MAP3K8), GenBank Accession No. NM_007746, a.a. 30-397, with N-terminal His-GST-tag, expressed in a Baculovirus infected Sf9 cell expression system. Theoretical MW is 70 kDa.
Host cell line: Sf9 cells
Specific activity: 8.5 pmole/min/mg
Background
COT is an oncogene that can activate both the MAP kinase and JNK kinase pathways. COT activates IkappaB kinases and induces the nuclear production of NF-kappaB. C-terminal catalytic domain of KSR2 associates with COT and KSR2 can negatively regulates the kinase activity of COT in vitro. Co-transfection of KSR2 with COT in cells lead to reduced COT-mediated ERK activation and COT-induced IL8 production in a dose-dependent manner. Cot is one of the MAP kinase kinase kinases that regulates the ERK1/ERK2 pathway in response to IL-1. Blockage of expression of Cot results in failure of IL-1 to induce an increase in IL-8 and MIP-1betamRNA levels.
Immunogen Region
30-397
Tag
N-terminal His-GST-tags
Formulation
40 mM Tris-HCl, pH 8.0, 110 mM NaCl, 2.4 mM KCl, 5 mM glutathione, 134 mM imidazole, 3 mM DTT and 20% glycerol.
Species
Mouse
Application
Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling
Notes
Reaction was performed in a kinase buffer (40 mM Tris, 10 mM MgCl2, 0.1 mg/ml BSA) containing 5 ug inactive MEK1 (BPS #40075), 20 uM ATP, and mCOT for 60 minutes at 30°C. The amount of ATP transferred was measured by Kinase-Glo plus (Promega).
Avoid freeze/thaw cycles.
GenBank
NM_007746
Mw(kda)
70 kDa (calculated)
Synonyms
COT, TPL2, MEKK8, mitogen-activated protein kinase kinase kinase 8, Cancer Osaka Thyroid oncogene, Ewing Sarcoma Transformant, EST, Tumor Progression Locus 2, MAP3K8
Uniprot
Q07174
Shipping Temperature
-80°C (dry ice)
Format
Aqueous buffer solution
Storage
At least 6 months at -80°C.
Reference
1. Jeong, J.H. et al., PLoS One. 2011 Jan 18, 6(1):e16205. 2. Soria-Castro, I. et al. J Biol Chem. 2010 Oct 29,285(44):33805-15.