Assay Method Information | |
| [35S]GTPγS Binding Assay |
Description: | Human CB2 expressing CHO-K1 membranes (5 μg per incubation mixture) were diluted in 50 mM Tris-HCl (pH 7.5) and 0.5 mM EDTA and added to HU compounds in a pre-mixed incubation cocktail. Final incubation concentrations were 55 mM Tris-HCl (pH 7.4), 1 mM EDTA, 100 mM NaCl, 5 mM MgCl2, 0.5% BSA, 50 μM GDP, 0.2 nM [35S]GTPγS (PerkinElmer) with varied HU compound concentration and 5 μg membrane. Incubations were continued for 60 minutes at 30° C. in a shaking water bath. Assays were terminated by addition of 2 ml ice cold wash buffer (50 mM Tris-HCl, pH 7.5 and 5 mM MgCl2) and filtration through pre-soaked GF/C filters (Whatman), followed by two further washes. |
Affinity data for this assay | |
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