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Assay Method Information

Assay Name:  Radioligand Displacement Assay
Description:  Binding assay was performed in a final assay volume of 250 μl. First, 25 μl of test compound, previously diluted in Binding-Buffer (Binding-Buffer: 50 mM Tris-Base, 100 mM NaCl, 1 mM EDTA, 0.1% BSA (protease free), 0.01% NaN3, 10 mM MnCl2, pH 7.0) was placed into each well. After addition of 75 μl Binding-Buffer, 50 μl of the radioligand 3H-PGD2 (at 2.5 nM (220.000 dpm/well) from ANAWA ART0662) was added to each well. Binding assay was started by addition of 100 μl CRTH2 membrane fragments, reaching a final concentration of 20 μg/well. For non-specific binding, PGD2 was added to the reaction mixture to 10 mM final concentration. This assay mix was incubated for 90 minutes at room temperature and then filtered through a GF/C filter 96-well plate which was pre-soaked for 3 hours in 0.5% polyethyleneimine (PEI). The filter-wells were washed three times with ice cold Binding-Buffer. Then, 40 μl of Microscint-40 (Packard) was added to each well and the re
Affinity data for this assay
 

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Last update November 1, 2007
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