Microplate thermal shift assay for ligand development using 5-(4"-dimethylaminophenyl) -2- (4' -phenyl) oxazole derivative fluorescent dyes
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United States of America Patent
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Issued Date -
Sep 18, 2003
app pub date -
Feb 14, 2003
filing date -
Nov 12, 1998
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Abandoned
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Abstract
The present invention provides a method for ranking the affinity of each of a multiplicity of different molecules for a target molecule which is capable of unfolding due to a thermal change. The method comprises (a) contacting the target molecule with one molecule of a multiplicity of different molecules, in the presence of a 5-(4'-dimethylaminophenyl)-2-(4-'-phenyl)oxazole derivative dye, in each of a multiplicity of containers; (b) simultaneously heating the multiplicity of containers; (c) measuring the fluorescence in each of the containers; (d) generating thermal unfolding information for the target molecule as a function of temperature for each of the containers; (e) comparing the thermal unfolding information obtained for each of the containers to the thermal unfolding information for the target molecule in the absence of any of the molecules in the multiplicity of different molecules; and (f) ranking the affinities of each of the molecules according to the difference in the thermal unfolding information between the target molecule in each of the containers and the target molecule in the absence of any of the molecules in the multiplicity of different molecules.
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