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Figure 1 | Biology Direct

Figure 1

From: A horizontal gene transfer at the origin of phenylpropanoid metabolism: a key adaptation of plants to land

Figure 1

A schematic representation of phenylpropanoid metabolism. From the general phenylpropanoid pathway (top left, reactions from L-phenylalanine to p-Coumaroyl-CoA) two separated branches lead to the production of lignin monomers (right) and of flavonoids (bottom). Solid arrows indicate a single step enzymatic reaction, dashed arrows multiple sequential enzymatic reactions. Enzymes are reported with a three letter code: PAL, phenylalanine ammonia lyase; TAL, tyrosine ammonia lyase; C4H, cinnamate 4-hydroxylase; 4CL, 4-coumarate CoA ligase; COMT, caffeic acid/5-hydroxyferulic acid O-methyltransferase; HCT/CST, hydroxycinnamoyl CoA:shikimate/quinate hydroxycinnamoyltransferase; C3H, p-coumaroyl shikimate/quinate 3-hydroxylase; CCoAOMT, caffeoyl CoA O-methyltransferase; CCR, (hydroxy)cinnamoyl CoA reductase; CAD, (hydroxy)cinnamyl alcohol dehydrogenase; F5H ferulate 5-hydroxylase; CHS, chalcone synthase; STS, stilbene synthase.

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ISSN: 1745-6150

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