| Assay Method Information | |
| | Activation Assay |
| Description: | Melanin Concentrating Hormone Receptor 1 (MCHR1) is a G-protein coupled receptor that interacts with heterotrimeric G proteins containing a Gαi/o subunit. Binding of MCH to MCHR1 results in the exchange of GDP for GTP on the Gαi/o proteins associated with the activated receptor. This activation can be quantified by measuring the amount of a GTP analog, GTPγ35S, bound to the membrane-associated receptor. GTPγ35S is not hydrolyzed by the intrinsic GTPase activity of a G-protein but instead forms a stable complex. Inhibition of MCH binding by a competing ligand may thus be assessed by a decrease in the amount of GTPγ35S bound to membranes in the presence of such a competing ligand. |
| Affinity data for this assay | |
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