| Assay Method Information | |
| | Biological Assay |
| Description: | CDK6/Cyclin D3: The purpose of the CDK6/Cyclin D3 assay is to evaluate the inhibition (% inhibition, Kiapp and Ki values) in the presence of small molecule inhibitors by using a fluorescence based microfluidic mobility shift assay. CDK6/Cyclin D3 catalyzes the production of ADP from ATP that accompanies the phosphoryl transfer to the substrate peptide 5-FAM-Dyrktide (5-FAM-RRRFRPASPLRGPPK) (SEQ ID NO:1). The mobility shift assay electrophoretically separates the fluorescently labeled peptides (substrate and phosphorylated product) following the kinase reaction. Both substrate and product are measured and the ratio of these values is used to generate % conversion of substrate to product by the LabChip EZ Reader. Typical reaction solutions contained 2% DMSO (±inhibitor), 2% glycerol, 10 mM MgCl2, 1 mM DTT, 3.5 mM ATP, 0.005% Tween 20 (TW-20), 3 μM 5-FAM-Dyrktide, 4 nM (active sites) activated CDK6/Cyclin D3 in 40 mM HEPES buffer at pH 7.5. |
| Affinity data for this assay | |
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