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Assay Method Information

Assay Name:  Receptor Assay
Description:  Compounds were evaluated for σ-1 and σ-2 binding in rat brain homogenates. Twelve concentrations of each test ligand (0.001-1,000 nM) were incubated for 120 min at 25 C. in 50 mM Tris-HCl, pH 8.0 with 500 μg membrane protein, and 5 nM [3H](+)-pentazocine (for σ1 assays) or 3 nM [3H]DTG plus 300 nM (+)-pentazocine (for σ2 assays); non-specific binding was determined in the presence of 10 μM haloperidol. The assays were terminated with ice-cold 10 mM Tris-HCl, pH 8.0, followed by two washes through glass fiber filters that were pre-soaked for at least 30 min in 0.5% polyethyleneimine.
Affinity data for this assay
 

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Last update November 1, 2007
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