Human Kit (V654A) (GenBank Accession No. NM_000222), a.a. 544-976(end) with substitution of valine654 to alanine and N-terminal His-tag, MW=53.4 kDa, expressed in an Baculovirus infected Sf9 cell expression system.
Host cell line: Sf9 cells
Specific activity: 89 pmol/min/ug
Unit definition: One unit is defined as the amount of enzyme that will phosphorylate 1 nmol of tyrosine substrate per minute at pH 7.4 and 30°C.
Immunogen Region
544-976(end)
Tag
N-terminal His-tag
Formulation
40 mM Tris-HCl, pH 8.0, 110 mM NaCl, 2.2 mM KCl, 3 mM DTT, 20% glycerol, and 200 mM imidazole
Species
Human
Application
Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling
Notes
Enzyme reaction is conducted in a buffer containing 50 mM HEPES, pH 7.4, 3 mM MgCl2, 3 mM MnCl2, 1 mM DTT, 3 uM Na orthovanadate, 0.1 mM ATP, 30 ug/ml Poly (Glu:Tyr)4:1 substrate, and 4 ug /ml recombinant cKit. Assay was done with 0.2 mg/ml Poly-(Glu-Tyr) peptide using ADPGlo (Promega) conditions at 30°C for 35 minutes.