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| | Binding Assay |
| Description: | For binding experiments, cDNA encoding human mGlu 5a receptor was transiently transfected into EBNA cells using a procedure described by Schlaeger and Christensen [Cytotechnology 15:1-13 (1998)]. Cell membrane homogenates were stored at −80° C. until the day of assay where upon they were thawed and resuspended and polytronised in 15 mM Tris-HCl, 120 mM NaCl, 100 mM KCl, 25 mM CaCl2, 25 mM MgCl2 binding buffer at pH 7.4 to a final assay concentration of 20 μg protein/well.Saturation isotherms were determined by addition of twelve [3H]MPEP concentrations (0.04-100 nM) to these membranes (in a total volume of 200 μl) for 1 h at 4° C. Competition experiments were performed with a fixed concentration of [3H]MPEP (2 nM) and IC50 values of test compounds evaluated using 11 concentrations (0.3-10,000 nM). Incubations were performed for 1 h at 4° C. |
| Affinity data for this assay | |
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