Abstract: The invention relates to a method for selecting compounds having a modulating effect on the activation state of a dimer of VFT-domain proteins expressed in cell membranes present in a measuring medium, said dimer consisting of a first protein and of a second protein, said proteins being identical or different, wherein this method comprises the following steps: (a) labeling the first and second proteins in the N-terminal portion of their VFT domains with the members of a pair of FRET partners, the Förster radius (R0) of said pair being between 20 and 55 ?; (b) measuring the FRET signal in the absence and in the presence of the test compound within a predetermined time window; (c) selecting the test compound as a modulating compound if a difference in FRET signal in the absence and in the presence of test compound is measured in step (b). The invention can be used in the search for new medicaments and new taste modulators.

Abstract: The invention relates to a method for selecting compounds having a modulating effect on the activation state of a dimer of VFT-domain proteins expressed in cell membranes present in a measuring medium, said dimer consisting of a first protein and of a second protein, said proteins being identical or different, wherein this method comprises the following steps: (a) labeling the first and second proteins in the N-terminal portion of their VFT domains with the members of a pair of FRET partners, the Förster radius (R0) of said pair being between 20 and 55 ?; (b) measuring the FRET signal in the absence and in the presence of the test compound within a predetermined time window; (c) selecting the test compound as a modulating compound if a difference in FRET signal in the absence and in the presence of test compound is measured in step (b). The invention can be used in the search for new medicaments and new taste modulators.