Fig. 1From: A new buckwheat dihydroflavonol 4-reductase (DFR), with a unique substrate binding structure, has altered substrate specificityThe biosynthetic relationship between anthocyanins, flavonols, and proanthocyanidins. Enzymes catalysing the respective steps are indicated by arrows, and putative steps are shown as dotted arrows. Abbreviations: 3GT, flavonoid 3-glucosyltransferase; ANR, anthocyanidin reductase; ANS, anthocyanidin synthase; CHS, chalcone synthase; CHI, chalcone isomerase; DFR, dihydroflavonol 4-reductase; F3H, flavanone 3-hydroxylase; F3′H, flavonoid 3′-hydroxylase; F3′5′H, flavonoid 3′5′-hydroxylase; FLS, flavonol synthase; LAR, leucoanthocyanidin reductase; RT, rhamnosyltransferase; UFGT, glucose-flavonoid glucosyl transferaseBack to article page