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Assay Method Information

Assay Name:  Metabotropic Glutamate Receptor Activity
Description:  In the first mode, a range of concentrations of the disclosed compounds are added to cells, followed by a single fixed concentration of agonist. If the compound acts as a potentiatior, an EC50 value for potentiation and a maximum extent of potentiation by the compound at this concentration of agonist is determined by non-linear curve fitting. If the compound acts as a noncompetitive antagonist, an IC50 value is determined by non-linear curve fitting. In the second mode, several fixed concentrations of the disclosed compounds are added to various wells on a plate, followed by a range in concentrations of agonist for each concentration of disclosed compound. The EC50 values for the agonist at each concentration of compound are determined by non-linear curve fitting. A decrease in the EC50 value of the agonist with increasing concentrations of the sample compound (a leftward shift of the agonist concentration-response curve) is an indication of the degree of mGluR4 potentiation at a given concentration of the sample compound. A decrease in the maximal response of the agonist with increasing concentrations of the sample compounds, with or without a rightward shift in agonist potency, is an indication of the degree of noncompetitive antagonism at mGluR4. The second mode also indicates whether the sample compounds also affect the maximum response to mGluR4 to agonists.
Affinity data for this assay
 

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Last update November 1, 2007
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