| Assay Method Information | |
| | Fluorescence Intensity Assay (250 NAD) |
| Description: | Compounds are dispensed onto assay plates (black, low volume, flat bottom 384 well, Corning) using an Access Labcyte Workstation with the Labcyte Echo 55× from a DMSO solution. For the chosen highest assay concentration of 100 μM, 150 nl of compound solution are transferred from a 10 mM DMSO compound stock solution. A series of 11 concentrations (10 1:5 steps) is transferred for each compound.DMSO is added such that every well has a total of 150 nl compound solution.The assay has been performed at two different NAD/3-PG ratios (final assay concentrations):PHGDH_HIGH_NAD/3-PG: 250 μM NAD/500 μM 3-PG5 μl of PHGDH protein (final assay concentration 100 ng/ml) in assay buffer (125 mM Tris-HCl, pH 7.5; 56.25 mM Hydrazine sulfate pH 9.0; 2.5 mM EDTA; assay specific NAD concentration; 0.0125% Tween20) are added to the 150 nl of compounds.10 μl of a mix containing assay specific 3-PG concentration, Resazurin (25 μM final assay concentration) and Diaphorase (35 μg/ml final assay concentration) are added. Plates are kept at room temperature. After 240 minutes incubation time the fluorescence signal is measured in a PerkinElmer Envision HTS Multilabel Reader with an excitation wavelength at 530-560 nm and an emission wavelength at 590 nm. |
| Affinity data for this assay | |
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