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.

P10721

KIT, cKIT, c-KIT, PBT, CD117, Piebald Trait, SCFR, Mast/Stem Cell Growth Factor Receptor

89 pmol/min/μg

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.

Enzyme reaction is conducted in a buffer containing 50 mM HEPES, pH 7.4, 3 mM MgCl₂, 3 mM MnCl₂, 1 mM DTT, 3 µM Na orthovanadate, 0.1 mM ATP, 30 µg/ml Poly (Glu:Tyr)4:1 substrate, and 4 µg /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.

40 mM Tris-HCl, pH 8.0, 110 mM NaCl, 2.2 mM KCl, 3 mM DTT, 20% glycerol, and 200 mM imidazole

Aqueous buffer solution

>6 months at –80°C.

Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling.

1. Schumaker, J.A., et al. (2008) J. Clin. Pathol. 61:109-114.
2. Sun, J. et al. (2009) J. Biol. Chem. 284: 11039-11047.

Avoid freeze/thaw cycles

Kinase/Receptor Tyrosine

Recombinant Protein