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Assay Method Information

Assay Name:  Radioligand Binding Assay
Description:  Radioligand Binding Studies: Saturation experiments. A representative compound of formula (I) was tritiated. Three tritiums were incorporated in place of methyl hydrogens to generate [3H]compound. Binding of this radioligand was preformed in 5 mL borosilicate glass test tubes at room temperature. Binding was initiated by adding membranes to increasing concentrations of [3H]compound in 100 mM NaCl, 20 mM Tris HCl, pH 7.4 buffer containing 0.01% w/v bovine serum albumin (BSA) for 18 h. Non-specific binding was determined in the presence of 1 uM unlabelled compound. After 18 h, the reactants were filtered through GF/C glass fiber filters presoaked in 0.5% w/v polyethylene imine. Filters were washed with 15 mL ice cold 100 mM NaCl, 20 mM Tris HCl, pH7.4 buffer containing 0.25% BSA to separate bound from free ligand. [3H]compound bound to filters was quantified by liquid scintillation counting.Competitive binding experiments.
Affinity data for this assay
 

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Last update November 1, 2007
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