Fig. 6From: A new buckwheat dihydroflavonol 4-reductase (DFR), with a unique substrate binding structure, has altered substrate specificitySubstrate preferences of (a) FeDFR1a and (b) FeDFR2. Remaining substrates, (+)-dihydrokaempferol (DHK, left), (+)-dihydroquercetin (DHQ, middle) and (+)-dihydromyricetin (DHM, right), are plotted as a function of reaction time. Reaction mixtures contained the selected substrate (0.2 mg mL−1), NADPH (2 mM), and either FeDFR1a or FeDFR2. Blue circles and orange triangles indicate experimental data obtained in the presence of 0.34 μM or 1.72 μM of DFR protein, respectivelyBack to article page