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Assay Method Information

Assay Name:  Inhibition Assay
Description:  Assay compound plates were prepared by diluting the compounds of formula (I) with chloride-free buffer (125 mM Na-gluconate, 4.8 mM K-gluconate, 1.3 mM Ca-gluconate, 1.2 mM KH2PO4, 1.2 mM MgSO4, 5.6 mM D-glucose, 25 mM HEPES, pH 7.4 with NaOH) in 100% DMSO to a final concentration of 1% DMSO. [14C]-Uric Uric acid working stock was made by addition of radiolabeled compound to a final concentration of 120 nM in chloride-free buffer. In all wells, the final assay concentration of solvent (DMSO) was 0.25%; the final assay concentration of [14C]-uric acid was 30 nM in chloride-free buffer and the final compound of formula (I) concentrations ranged from 0 to 10 uM. The vehicle comparator was DMSO (i.e. no inhibition of uric acid transport) and the pharmacological blockade (i.e. 100% inhibition of uric acid transport) was defined by benzbromarone at 10 uM final assay concentration.After pre-incubation, cells were washed with 50 uL of chloride-free buffer.
Affinity data for this assay
 

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Last update November 1, 2007
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