Adelbert Bacher

Ferdinand Zepeck

Wolfgang Eisenreich

Felix Rohdich

Stefan Hecht

Petra Adam

Tobias Gräwert

Assay for testing a sample for the presence or absence of inhibition of the enzymatic conversion of 1-hydroxy-2-methyl-(E)-butenyl 4-diphosphate into isopentenyl diphosphate and/or dimethylallyl diphosphate by the following steps: (a) reacting an aqueous mixture containing 1-hydroxy-2-methyl-(E)-butenyl 4-diphosphate, a 1-hydroxy-2-methyl-(E)-butenyl 4-diphosphnte reductase, and a reducing agent under predetermined reaction conditions for a predetermined period of time; (b) analyzing the reaction mixture obtained in step (a) for the consumed amount of 1-hydroxy-2-methyl-(E)-butenyl 4-diphosphate and/or NAD(P)H and/or for the produced amount of isopentenyl diphosphate, and/or dimethylallyl diphosphate and/or NAD(P); (c) repeating step (a) in the presence of the sample to be tested; (d) repeating step (b) with the reaction mixture defined in step (c); (e) comparing the results of steps (b) and (d).

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Munich, Germany

Ferdinand Zepeck