| Assay Method Information | |
| | Binding Assay |
| Description: | Membranes from CHO/Galpha16 cells stably transfected with human hMCH-1R are resuspended using a syringe (needle 0.6x25 mm) and diluted in test buffer (50 mM HEPES, 10 mM MgCl2, 2 mM EGTA, pH 7.00; 0.1% bovine serum albumin (protease-free), 0.021% bacitracin, 1 ug/ml aprotinin, 1 ug/ml leupeptin and 1 uM phosphoramidone) to a concentration of 5 to 15 ug/ml. 200 microliters of this membrane fraction (contains 1 to 3 ug of protein) are incubated for 60 minutes at ambient temperature with 100 pM of 125I-tyrosyl melanin concentrating hormone (125I-MCH commercially obtainable from NEN) and increasing concentrations of the test compound in a final volume of 250 microliters. After the incubation the reaction is filtered using a cell harvester through 0.5% PEI treated fibreglass filters (GF/B, Unifilter Packard). The membrane-bound radioactivity retained on the filter is then determined after the addition of scintillator substance (Packard Microscint 20). |
| Affinity data for this assay | |
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