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| | Radioligand Binding Assay |
| Description: | Aliquots of membrane preparations were thawed at RT, resupended in assay buffer (D2, D3: 50 mM Tris-HCl, 120 mM NaCl, 5 mM MgCl2, 1 mM EDTA, 5 mM KCl, 1.5 mM CaCl2, pH=7.4; 5-HT2A: 50 mM Tris-HCl, 10 mM MgCl2, 1 mM EGTA, pH=7.4), homogenized with a Polytron for 20-30 sec at 12.000 rpm and adjusted to a final concentration of approximately 7.5 μg protein/well (D2, D3) and 15 μg protein/well (5-HT2A), respectively. The binding affinity (Ki) of the compounds was determined using radioligand binding. Membranes were incubated in a total volume of 200 μl with a fixed concentration of radioligand (final concentration approximately 0.7 nM [3H]-spiperone for D2, 0.5 nM [3H]-spiperone for D3, and 1.1 nM [3H]-ketanserin for 5-HT2A) and ten concentrations of test compound in ranging between 10 μM-0.1 nM for 1 h at RT. |
| Affinity data for this assay | |
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