| Assay Method Information | |
| | AlphaScreen Assay |
| Description: | Pim 1, Pim 2 & Pim 3 AlphaScreen assays using high ATP (11-125.times. ATP Km) were used to determine the biochemical activity of the inhibitors. The activity of Pim 1, Pim 2, & Pim 3 is measured using a homogeneous bead based system quantifying the amount of phosphorylated peptide substrate resulting from kinase-catalyzed phosphoryl transfer to a peptide substrate. Compounds to be tested are dissolved in 100% DMSO and directly distributed to a white 384-well plate at 0.25 .mu.l per well. To start the reaction, 5 .mu.l of 100 nM Bad peptide (Biotin-AGAGRSRHSSYPAGT-OH (SEQ ID NO:1)) and ATP (concentrations described below) in assay buffer (50 mM Hepes, pH=7.5, 5 mM MgCl.sub.2, 0.05% BSA, 0.01% Tween-20, 1 mM DTT) is added to each well. This is followed by the addition of 5 .mu.l/well of Pim 1, Pim 2 or Pim 3 kinase in assay buffer (concentrations described below). Final assay concentrations (described below) are in 2.5% DMSO. The reactions are performed for .about.2 hours. |
| Affinity data for this assay | |
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