Figure 1
Schematic drawing of the biosynthetic pathway of anthocyanins and proantocyanidins. Enzyme abbreviations: ANR, anthocyanidin reductase; ANS, anthocyanidin synthase (also known as leucoanthocyanidin dioxygenase); CHI, chalcone isomerase; CHS, chalcone synthase; C4H, cinnamate 4-hydroxylase; DFR, dihydroflavonol 4-reductase; F3H, flavanone 3-hydroxylase; F3′H, flavanone 3′-hydroxylase; F3′5′H, flavanone 3′,5′-hydroxylase; LAR, leucoanthocyanidin reductase; PAL, L-phenylalanine ammonia-lyase; UFGT, UDP-glucose:flavonoid 3-O-glucosyltransferase; 4CL, 4-coumaroyl:CoA-ligase. |