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Microplate thermal shift assay for ligand development using 5-(4″dimethylaminophenyl)-2-(4′-phenyl)oxazole derivative fluorescent dyes

  • US 6,569,631 B1
  • Filed: 11/12/1999
  • Issued: 05/27/2003
  • Est. Priority Date: 11/12/1998
  • Status: Expired due to Term
First Claim
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1. 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, said method comprising(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 said multiplicity of containers;

    (c) measuring the fluorescence in each of said containers;

    (d) generating thermal unfolding information for the target molecule as a function of temperature for each of said containers;

    (e) comparing the thermal unfolding information obtained for each of said containers to (i) the thermal unfolding information obtained for each of the other containers, and (ii) the thermal unfolding information obtained for the target molecule in the absence of any of said molecules in said multiplicity of different molecules; and

    (f) ranking the affinities of each of said molecules according to the difference in said thermal unfolding information between the target molecule in each of said containers and the target molecule in the absence of any of said molecules in the multiplicity of different molecules.

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