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Assay Method Information

Assay Name:  Binding Assay
Description:  A membrane binding assay was used to identify inhibitors of [33P] 2MeS- ADP binding to cloned human P2Y1 receptors. The cDNA clone for human P2Yi was obtained from Incyte Pharmaceuticals and its sequence confirmed by established techniques (for a compendium of techniques used see Ausubel, F. et al. Current Protocols in Molecular Biology, John Wiley and Sons, NY, NY (1995)). The essential coding sequences were subcloned into pCDNA 3.1 (Invitrogen) to produce a P2Y1 expression construct. This construct was then transfected into the human embryonic kidney cell line HEK-293 and stable transfectants selected in GENETICIN (G418 sulfate; Life Technologies). Several lines were screened for binding activity and one (HEK293 #49) selected for further characterization. Membranes were prepared by growing HEK293 #49 in 150 mm dishes in DMEM/10% FBS in the presence of lmg/ml G418 until cells were 80-90% confluent. Plates were then washed with cold (4 C) D-PBS twice.
Affinity data for this assay
 

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Last update November 1, 2007
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