Merck, SRP0173-20UG, Jak3 Active human

General description
Human Jak3 (GenBank Accession No. NM_000215), (amino acids 781-end) with N-terminal His tag, MW = 37 kDa, expressed in Baculovirus expression system.
Application
Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling.
Physical form
Formulated in 25 mM Tris-HCl, pH 8.0, 100 mM NaCl, 0.05% Tween-20, 20% glycerol and 1 mM DTT.
Preparation Note
Thaw on ice. Upon first thaw, briefly spin tube containing enzyme to recover full content of the tube. Aliquot enzyme into single use aliquots. Store remaining undiluted enzyme in aliquots at -70°C. Note: Enzyme is very sensitive to freeze/thaw cycles.
Other Notes
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.