||Recombinant human TIE 2 was expressed bybaculovirus in Sf9 insect cellsusing an N-terminal GST tag. MW = 61 kDa.
||TIE 2 or TEK is a receptor tyrosine kinase that is expressed principally on vascular endothelium. Disrupting TIE 2 function in mice results in embryonic lethality with defects in embryonic vasculature, suggesting a role in blood vessel maturation and maintenance. Angiopoietin-1 is a secreted growth factor that binds to and activates the TIE 2 receptor tyrosine kinase. SHP2 and GRB2 are recruited to the activated TIE 2 kinase domain and are part of the cellular responses that mediate TIE 2 function. TIE 2 expression is upregulated in the endothelium of vascular "hot spots" in human breast cancer specimens. However, TIE 2 is also overexpressed in areas of active angiogenesis in normal tissues.
||Baculovirus infected Sf9 cells.
||>60% by SDS-PAGE.
||140 U/ug. One unit is defined as the amount of enzyme that will phosphorylate 1 pmol of Tyr substarte per minute at pH 7.4 and 30°C. Assay buffer: 50 mM HEPES, pH 7.4, 3 mM MgCl2, 3 mM MnCl2, 1 mM DTT, 3 uM Na-orthovanadate, 0.5 mM ATP, 30 ug/ml Poly (Glu:Tyr)4:1 substrate, and 2 ug/ml recombinant Tie2.
||Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling.
||25 mM Tris-HCl, pH 8.0, 100 mM NaCl, 0.05% Tween-20, 50% glycerol, and 3 mM DTT.
||>6 months at –80°C.