L-tyrosine – Benefits and Information | MyMineralMix
L-tyrosine – Benefits and Information
L-tyrosine (2-amino-3-(4-hydroxyphenyl)-propionic acid; abbreviation: Tyr) is an aromatic amino acid with a basic side chain. Discovered in 1846 by the chemist Justus v. Liebig, L-tyrosine is classified as a semi-essential amino acid and is present in almost all proteins.
Functions of L-tyrosine
L-tyrosine fulfills several important functions in the body:
- Protein building block: L-tyrosine is an essential component of nearly all endogenous proteins and contributes to their structure and function.
- Hormone formation: L-tyrosine is the precursor for the synthesis of the catecholamines DOPA and dopamine, as well as the hormones norepinephrine and epinephrine. In the adrenal medulla, epinephrine and norepinephrine are produced in a 1:4 ratio, highlighting the importance of L-tyrosine for hormonal balance.
- Precursor for lipids and glucose: L-tyrosine can be converted into fats or glucose, making it both a glucoplastic and ketoplastic amino acid, thereby supporting energy metabolism.
Sources of L-tyrosine
L-tyrosine is found in many foods. Natural sources include:
- Meat
- Fish
- Dairy products
- Soy products
- Nuts and seeds
A balanced diet ensures sufficient intake of L-tyrosine.
Good to know!
L-tyrosine can be synthesized by the body itself if enough L-phenylalanine is present. About 75% of ingested L-phenylalanine is used for the synthesis of L-tyrosine. This synthesis is regulated by phenylalanine hydroxylase and is vitamin B6-dependent. Phenylalanine is partially decarboxylated to phenylethylamine (PEA). PEA enhances the effects of catecholamines at the cellular level.
Conclusion
L-tyrosine is a versatile amino acid which not only contributes to protein construction but also plays a central role in hormone production and energy supply. Ensuring sufficient L-tyrosine through diet or dietary supplements can support overall health and well-being.