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Assay Method Information

Assay Name:  GTP-gamma-S Binding Assay
Description:  A GTP-gamma-S CB1 functional assay was used to assess the potency of the pyrazine derivatives. [35S]GTP-gamma-S binding assays were performed at 30 deg C fro 45 min in membrane buffer containing membrane protein, GDP and [35S]GTP-gamma-S in the presence of test compounds. Non specific binding was determined in the presence of 20 uM GTP-gamma-S. The reaction was terminated by addition of ice cold wash buffer followed by rapid filtration under vacuum through Printed Filtermat A glass fibre filters (Wallac) using a Micro 96 Harvester. The bound radioactivity was determined using a 1450 Microbeta Trilux (Wallac) scintillation counter.
Affinity data for this assay
 

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Last update November 1, 2007
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