Phenylpropanoid metabolic pathway. Enzymes are indicated in uppercase letters. In purple are the enzymes for which cDNAs were printed in the soybean microarrays and their RNA profiles were determined in the microarray experiments. In red are the enzymes which RNA profiles were measured by microarrays and RNA blots using specific cDNA probes. In gray are enzymes for which no annotated EST exists in soybean public databases. PAL, phenylalanine ammonia-lyase; C4H, cinnamate 4-hydroxylase; 4CL, 4-coumarate: CoA ligase; CHS, chalcone synthase; CHI, chalcone isomerase; IFS, isoflavone synthase; F3'H, flavonoid 3'-hydroxylase; F3', 5'H, flavonoid 3',5'-hydroxylase; F3H, flavanone 3-hydroxylase; DFR, dihydroflavonol-4-reductase; ANS, anthocyanidin synthase also called LDOX, leucoanthocyanidin dioxygenase); UFGT, UDP-flavonoid glucosyltransferase; BA2H, benzoic acid 2-hydroxylase; C3H, p-coumarate 3 hydroxylase; COMT, caffeic O-methyltransferase; F5H, ferulic acid 5-hydroxylase; CCR, cynnamoyl CoA reductase; CAD, cynnamyl alcohol dehydrogenase.