Recombinant fusion protein consisting of human proteins TAK1 (TGFbeta-activated kinase 1), also known as MAP3K7 (Mitogen-activated protein kinase kinase kinase 7), GenbankAccession #NM_003188, a.a. 1-303, and human TAB1 (TAK1-binding protein), Genbank Accession #NM_006116, a.a. 437-end, linked by a small peptide (DFGGGGG), and with an N-terminal GST-tag, MW = 74 kDa, expressed in Sf9 cells via a baculovirus expression system.
Host cell line: Sf9 cells
Background
TAK1 is a serine/threonine protein kinase that mediates signaling by TGFbeta and morphogenetic protein (BMP) (1). In response to IL-1, TAK1 forms a kinase complex with TAB1 and this complex is required for the activation of nuclear factor kappa B (Nf B). TAK1 can also activate MAPK8/JNK and MAP2K4/MKK4 and thus play a role in the cell response to environmental stress. Tak1 is essential for thymocyte development and activation and deletion of TAK1 prevents maturation of single-positive thymocytes displaying CD4 or CD8 (2). Thymocytes lacking TAK1 fail to activate Nf B and JNK and are prone to apoptosis upon stimulation.
Immunogen Region
TAK1 (1-303), TAB1 (437-end)
Tag
N-terminal GST-tag
Formulation
40 mM Tris-HCl, pH 8.0, 110 mM NaCl, 2.2 mM KCl, 3 mM DTT and 20% glycerol.
Species
Human
Application
Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling
Notes
Assay was performed in a kinase buffer containing 0.2 mM DTT using MBP substrate (0.1 mg/ml) and 100 mM ATP. Reaction was done at 30°C for 35 min. Amount of ATP transferred was calculated using ADP-Glo reagent (Promega).