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Assay Method Information

Assay Name:  In Vitro Inhibition Assay
Description:  A suspension of fission yeast (S. pombe PE1) with a cell density of 3˙10^7 cells/ml was prepared on a freshly grown culture using fresh EMMG (pH 7.4) as modified according to Ehmer et al. (Ehmer, P. B. et al., 1. Steroid. Biochem. Mol. Biol. 81, 173-179 (2002)). 492.5 μl of this cell suspension was admixed with 5 μl of inhibitor solution (50 μM of the compound to be tested in ethanol or DMSO) and incubated at 32 °C. for 15 min. Controls were admixed with 5 μl of ethanol. The enzyme reaction was started by adding 2.5 μl of 11-deoxycorticosterone (20 μM, containing 1.25 nCi of [4-14C]11-deoxycorticosterone in Ethanol), followed by horizontal shaking at 32 °C. for 6 h. The test was quenched by extracting the sample with 500 μl of EtOAc. After centrifugation (10,000 g, 2 min), the EtOAc phase was removed and evaporated to dryness.
Affinity data for this assay
 

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Last update November 1, 2007
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