Tags: Enzyme.
Phenylalanine/tyrosine ammonia-lyase (EC 4.3.1.25 PTAL bifunctional PAL) is an enzyme with system name L-phenylalanine(or L-tyrosine):trans-cinnamate(or trans-p-hydroxycinnamate) ammonia-lyase. This enzyme catalyses the following chemical reaction (1) L-phenylalanine trans-cinnamate + NH3 (2) L-tyrosine trans-p-hydroxycinnamate + NH3This enzyme is a member of the aromatic amino acid lyase family.