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Fig. 2 | BMC Genomics

Fig. 2

From: Slow darkening of pinto bean seed coat is associated with significant metabolite and transcript differences related to proanthocyanidin biosynthesis

Fig. 2

Proposed proanthocyanidin biosynthetic pathway in pinto bean seed coats. The multiple arrows indicate multiple steps and dashed arrows indicate speculative steps. The ovals indicate membrane transporters. PAL, phenylalanine ammonia lyase; C4H, cinnamate-4-hydrolase; 4CL, 4-coumarate-CoA ligase; CHS, chalcone synthase; CHR, chalcone reductase; CHI, chalcone isomerase; F3H, flavanone 3-hydroxylase; F3’H, flavonoid 3′-hydroxylase; F3’5’H, flavonoid 3′,5′-hydroxylase; DFR, dihydroflavonol reductase; ANS, anthocyanidin synthase; FLS, flavonol synthase; LAR, leucoanthocyanidin reductase; ANR, anthocyanidin reductase; ANS, anthocyanidin synthase; MATE, multidrug and toxic compound extrusion protein

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