Fig. 10

Activities of different DcUGT2-Strep forms synthesized in yeast. Yeast microsomes containing pYES-DEST52, DcUGT2-Strep, DcUGT2ΔMD-Strep and ΔSP-DcUGT2ΔMD-Strep were incubated with UDP-glucose and a Kermes vermilio metabolite fraction, containing kermesic acid and flavokermesic acid. Assay products were analyzed by LC-ESI(−)-MS and ion chromatograms of m/z 475.0882 (purple) and 491.0831 (blue) were extracted, corresponding to dcII and carminic acid (CA), respectively