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| | hPrep Inhibition Assay |
| Description: | Table 3: Compounds were tested in a biochemical inhibition assay using Prolyl endopeptidase, Prolyl Oligopeptidase (hPREP) enzyme at 0.6 nM FAC (R&D Systems, 4308-SE) and the substrate Z-Gly-Pro-amino-methylcoumarin (Bachem, I-1145) at 50 μM FAC. 384 Low volume black plates (Greiner #784076) were used. 4 μL, 1.2 nM enzyme solution (25 mM Tris HCl, 250 mM NaCl, 0.01% Triton X-100, 5 mM Glutathione, pH 7.5) was added to 40 nL compounds (in DMSO) at 10 CR, 3 fold dilution series from 50 μM FAC. Plates were incubated for 15 min at rt in dark. 4 μL, 100 μM substrate solution (25 mM Tris HCl, 250 mM NaCl, 0.01% Triton X-100, 5 mM Glutathione, pH 7.5) was added to each well. Plates were centrifuged at 1000 rpm and incubated for 20 min at rt in dark. The plates were read on a PHERAstar reader with excitation 340 nm and emission 460 nm. Data were analyzed in Genedata Screener . IC50 values were determined by plotting % inhibition versus log compound concentration and using a one site dose response model. |
| Affinity data for this assay | |
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