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Scheme of the proposed pathway of aromatic amino acids metabolism: The blue box (left) includes the metabolites related to the tryptophan metabolism studied in this work. The green box (right) includes the metabolites related to the tyrosine and phenylalanine metabolisms. Possible biosynthetic pathways leading to the de novo synthesis of three aromatic amino acids are included. The metabolites that include abbreviation in parentheses were measured by the UPLC-MS/MS method.
