Figure 4.
LC-MS analysis of endogenous pools of prenyl diphosphates in isolated peppermint oil gland secretory cells. A, Total ion chromatogram (TIC; m/z 50–350); B, detection of endogenous GPP in the m/z 313 [(M − H)−] extracted ion chromatogram (EIC); C, detection of endogenous DMAPP and IPP in the m/z 245 [(M − H)−] EIC; D, EIC of a mixture of authentic DMAPP and IPP standards at m/z 245 [(M − H)−].