Fig. 5.
Enzymatic activity of BrAOP2 heterologously expressed in E. coli. HPLC results (monitored at 229nm) of purified desulfoglucosinolates from bacterial extracts containing heterologously expressed BrAOP2 fusion proteins is shown. The compound identities were confirmed by comparing retention times and UV light absorption profiles with those of authentic standards. Std 2 indicates desulfated GRA standard, Std 1 indicates desulfated NAP standard, BrAOP2.1, BrAOP2.2, and BrAOP2.3 indicate GRA treated with these three BrAOP2 enzymes, and H2O shows GRA treated with ddH2O as the negative control.