2.6.1.1 aspartate transaminase L-phenylalanine biosynthesis I - - PHESYN 2.6.1.27 tryptophan transaminase L-phenylalanine biosynthesis I - - PHESYN 2.6.1.57 aromatic-amino-acid transaminase L-phenylalanine biosynthesis I - - PHESYN 4.2.1.51 prephenate dehydratase L-phenylalanine biosynthesis I - - PHESYN 5.4.99.5 chorismate mutase L-phenylalanine biosynthesis I - - PHESYN