Canadian Medical Guide > Chemicals and Drugs > Amino Acids, Peptides, and Proteins > Amino Acids > Amino Acids, Cyclic > Amino Acids, Aromatic Terms and Definitions

Amino Acids, Aromatic

Medical Definition:	Amino acids containing an aromatic side chain.
Previously Indexed:	Amino Acids (1965-2001),specific amino acid (1965-2001)

Amino Acids, Aromatic Categories.

	Phenylalanine - An essential aromatic amino acid that is a precursor of MELANIN, DOPAMINE, noradrenalin (NOREPINEPHRINE), and THYROXINE.
	Tryptophan - An essential amino acid that is necessary for normal growth in infants and for NITROGEN balance in adults. It is a precursor of INDOLE ALKALOIDS in plants. It is a precursor of SEROTONIN (hence its use as an antidepressant and sleep aid). It can be a precursor to NIACIN, albeit inefficiently, in mammals.
	Tyrosine - A non-essential amino acid. In animals it is synthesized from PHENYLALANINE. It is also the precursor of EPINEPHRINE, THYROID HORMONES, and melanin.

Amino Acids, Aromatic Medical Definitions and Terms

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