FIGURE 3.

Profiles of dolichol isotopomer signals obtained from in vivo labeling with glucose. A, overlaid HPLC/ESI-MS spectra of Dol-n (-14 up to -19) obtained from [1-¹³C]glucose. B, spectra acquired after all three feeding experiments: red, [1-¹³C]glucose; blue, [1,6-¹³C₂]glucose, and green, [U-¹³C₆]glucose. In all samples, the group of low mass signals represents residual population of native dolichols remaining from root inoculum.