| Assay Method Information | |
| | Radioligand Binding Assay |
| Description: | Radioligand binding studies were carried out with M3 receptor cell homogenates as described (Peralta et al., The EMBO Journal 6, 3923-3929, (1987)). Incubations of test ligands (or standard) with 0.2 nM [3H]4-DAMP were incubated for 120 minutes at 22 C. using human M3 receptor-expressing cell homogenates. Specific ligand binding to the receptors was defined as the difference between the total radioligand binding and the nonspecific binding determined in the presence of an excess of unlabelled ligand (10 atropine). The results were expressed as a percent of control specific binding ((measured specific binding/control specific binding)x100) obtained in the presence of various concentrations of the test compounds. |
| Affinity data for this assay | |
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