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Assay Method Information |
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| | Human eIF4E/4G2 Binding Assay |
| Description: | Test compounds (3.43 mM stock in DMSO) were diluted 2-fold in series in DMSO (10 concentration points). Compound solutions (1.2 μl/well) were added into black 384-well polypropylene microplates (Matrix, Thermal Scientific). Twenty-two microliters per well of Assay Buffer (50 mM NaPi, pH 6.5, 50 mM KCl, 1 mM DTT and 0.5 mg/ml gamma globulin) and eight microliters per well of 82.5 nM purified eIF4E in Assay Buffer were added. The samples were incubated at room temperature (20-23° C.) for 4 hours. Biotin labeled 4G2 peptide (Ac-Lys-Gln-Tyr-Asp-Arg-Glu-Phe-Leu-Leu-Asp-Phe-Gln-Phe-Met-Pro-Lys(Aha-Bio)-NH2, 1.75 μM stock in DMSO) was diluted to 0.14 μM in Assay Buffer (without DTT) and 5 μl/well was added. The samples were incubated at room temperature for 20 min. Five microliters per well of 6.4 nM Eu-streptavidin (Eu-SA, Perkin Elmer) and 80 nM Allophycocyanin (APC)-anti His antibody (Columbia Biosciences) in Assay Buffer (without DTT) were then added and the samples were incubated at room temperature for 20 min. |
| Affinity data for this assay | |
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