DL-Tyrosine

DL-Tyrosine (CAS No.: 556-03-6) is a racemic mixture of D-tyrosine and L-tyrosine, classified as an aromatic amino acid derivative with important roles in cellular metabolism and signaling. Biosynthetically derived from phenylalanine, DL-tyrosine serves as a key precursor for catecholamine neurotransmitters, including dopamine, norepinephrine, and epinephrine, thereby linking it to pathways governing neuronal communication, stress responses, and endocrine regulation. In biochemical and cell-based studies, DL-tyrosine has been shown to modulate enzyme activity and influence multiple signaling cascades associated with amino acid metabolism, redox balance, and neurotransmitter biosynthesis. Its biological activity is generally characterized in the micromolar concentration range in vitro, where it is used to investigate metabolic flux, signal transduction mechanisms, and enzyme kinetics. As a research tool, DL-tyrosine is widely applied in cellular and animal models to study neurobiology, metabolic disorders, and pathway regulation, as well as in drug discovery efforts aimed at targeting neurotransmitter systems or metabolic enzymes, with experimental concentrations or dosing regimens varying according to specific study designs and objectives.