Human Sphingosine kinase 2 (GenBank Accession No. AF245447), full length with N-terminal His-tag, MW=69.5 kDa, expressed in a Baculovirus infected Sf9 cell expression system.
Host cell line: Sf9 cells
Specific activity: 20 U/ug
Unit definition: A unit of sphingosine kinase activity is defined as the amount of enzyme required to produce 1 pmol of S1P per minute at 37°C.
Immunogen Region
full length
Tag
N-terminal His-tag
Formulation
45 mM Tris-HCl, pH 8.0, 124 mM NaCl, 2.4 mM KCl, 225 mM imidazole, 20% glycerol, and 3 mM DTT.
Species
Human
Application
Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling
Notes
Sphingosine kinase activity was determined using D-erythro-sphingosine and ATP as substrates. Assay condition: 50 mM HEPES, pH 7.4, 150 mM NaCl, 5 mM MgCl2, 1 mM DTT, 3 uM Na orthovanadate, 0.5 mM ATP, 4 uM D-erythrosphingosine, and 0.75 ug/ml sphingosine kinase 2 at 37°C for 30 min. ATP reduction is detected using Kinase-Glo Luminescent Kinase Assay Platform (Promega Corporation, Madison, WI).