Phenylalanine
Overview
Phenylalanine is an essential amino acid that serves as a precursor to tyrosine, which in turn is converted to the catecholamine neurotransmitters dopamine and norepinephrine. Phenylalanine participates in LAT1 competition at the blood-brain barrier along with other large neutral amino acids, and its conversion to tyrosine requires the enzyme phenylalanine hydroxylase. Both dopamine and norepinephrine synthesis pathways rely on cofactors including iron, B6, folate, omega-3s, and BH₄ (tetrahydrobiopterin) to support rate-limiting steps in catecholamine synthesis, making phenylalanine an important component of neurotransmitter production.
Recipes
Foods
Biological Mechanisms and Implications
No biological targets found for substance: Phenylalanine
References
- Phenylalanine converts to tyrosine and supports catecholamine synthesis; participates in LAT1 competition at the BBB
- Both dopamine and norepinephrine synthesis pathways rely on cofactors including iron, B6, folate, omega-3s, and BH₄ to support rate-limiting steps in catecholamine synthesis Fanet et al. 2021