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| | fluorescence polarization assay |
| Description: | The fluorescent labeled small molecule used in the present invention was VER-00051001 (synthesized by reference to the synthetic method described in JMC, 2008, 51, 196-218). The reaction was carried out in a 384-well black plate, using the reaction hydrophobic protein HFB buffer: 100 mM Tris.Cl pH 7.4, 20 mM KCl, 6 mM MgCl2, 5 μg/mL BSA, 25 nM full-length Hsp90U, 10 nM VER-51001. The volume of the reaction system was 50 mL, containing 5 nM GM-BODIPY (geldanamycin), 30 nM HSP90 and the test small molecular compound or DMSO (dimethyl sulfoxide), wherein the DMSO content was 2% o. Additional two group wells were established, wherein the wells only added with HFB buffer were used as blank controls, and the wells further added with 5 nM GM-BODIPY were used as negative controls. The reaction was carried out at 4° C. for 12-16 hours. The mP value was measured by Biotek microplate reader at 485 nm of excitation wavelength and 535 nm of emission wavelength. The inhibition rate was calculated using the following equation:(Compound-free mP−Compound mP)/(Compound-free mP−negative control mP)×100%After the inhibitory rates of the compound at different concentrations were calculated, the IC50 of the compound can be calculated. |
| Affinity data for this assay | |
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