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Encompassing Amino Acids: 1881-end
Application: Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling.
Assay Conditions: Kinase activity was measured using the ADP-Glo™ Kinase Assay Kit (Promega; Cat# V9101) which quantifies the amount of ADP produced. The ADP-Glo™ Reagent is added to terminate the reaction and deplete the remaining ATP. The Kinase Detection Reagent is then added to convert ADP to ATP and to measure the newly synthesized ATP using a luciferase reaction.ROS1 activity was measured by using IGFR1tide synthetic peptide (KKKSPGEYVNIEFG) diluted in water to a final concentration of 1 mg/ml. Reaction was initiated by mixing increasing amounts of the ROS1 with 25 µM ATP in 40 mM Tris-HCl, pH 7.4, 20 mM MgCl2, 0.1 mg/ml BSA prepared with 250 µM DTT and the 20 µg/ml substrate.After a 40-minute incubation at 37°C, the reaction was terminated by addition of the AMP-Glo™ Reagent followed by a subsequent 40-minute incubation at room temperature. Kinase Detection Reagent was then added and incubated for another 30 minutes. Detection of luminescence was measured using the Luminescence Module Protocol on GloMax®-Multi Microplate reader. The corrected activity (RLU) was calculated by removing the blank value for each sample divided by the (specific activity of ADP in RLU/pmol)*(Reaction time in min)*(Enzyme amount in µg or mg). The blank was determined from a 'no kinase' sample by replacing the enzyme working solution with an equal volume of Kinase Dilution Buffer IX (1X).
Description: Recombinant human ROS1 (G2101A) (ROS proto-oncogene 1, receptor tyrosine kinase), encompassing amino acids 1881-end. This construct contains an N-terminal GST-tag and was affinity purified.
Format: Aqueous buffer solution
Formulation: 50 mM Tris-HCl, pH 7.5, 300 mM NaCl, 10 mM glutathione, 0.1 mM EDTA, 0.25 mM DTT, 0.1 mM PMSF, 25% glycerol
Genbank: NM_002944
Host Cell Line: Sf9 cells
Purity: ≥90%
Tags: N-terminal GST-tag
Uniprot: P08922
Warnings: Avoid freeze/thaw cycles.
Biosafety Level: Not applicable (BSL-1)
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