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Assay Method Information

Assay Name:  Radioligand Binding Assay
Description:  Membranes prepared as above were resuspended to 1 ug protein/ul (measured by Bradford assay using BSA as standard), and 50 ul were added to each well of a polypropylene 96-well plate containing (per well): 50 ul of buffer (20 mM HEPES, 10 mM MgCl2, 1 mM EDTA, 1 mM EGTA, 100 mM N-methyl-D-gluconate, pH 7.4), 50 ul of 1.5 nM [3H]N-methylspiperone (final concentration 0.3 nM) and reference or D2 test ligand at various concentrations ranging from 50 uM to 50 uM (final concentrations ranging from 10 uM to 10 uM, triplicate determinations for each concentration of D2 test ligand). After a 1.5-hr incubation in the dark at room temperature, the reactions were harvested onto 0.3% PEI-soaked Filtermax GF/A filters (Wallac) and washed three times with ice-cold 50 mM Tris, pH 7.4 using a Perkin-Elmer Filtermate 96-well harvester. The filters were subsequently dried, placed on a hot plate (100° C.), and Melitilex-A (Wallac) scintillant was applied.
Affinity data for this assay
 

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Last update November 1, 2007
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