Main Reaction: L-phenylalanine >> 4-coumaroyl-Coa

Reference: PubMed ID: 21490971
Authors: Dick CA, Buenrostro J, Butler T, Carlson ML, Kliebenstein DJ, Whittall JB
Title: Arctic mustard flower color polymorphism controlled by petal-specific downregulation at the threshold of the anthocyanin biosynthetic pathway.
Published: 2011 Apr 7

L-phenylalanine --> 4-coumaroyl-Coa