Isomerization of geraniol and geranyl phosphate by enzymes from carrot and peppermint

Cell-free extracts from carrot and peppermint catalysed enzymatic trans-cis isomerization of geraniol and geranyl phosphate to nerol and neryl phosphate, respectively, in the presence of a flavin, a thiol or sulfide and light. Partial reduction of the flavin prior to incubation allowed the reaction to proceed in the absence of light. The reaction was reversible with the equilibrium favoring geraniol and geranyl phosphate.