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Tyrosine
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Written by NCI Thesaurus v.07.09d   
Definition of Tyrosine
The levorotatory isomer of the aromatic amino acid tyrosine. L-tyrosine is a naturally occurring tyrosine and is synthesized in vivo from L-phenylalanine. It is considered a non-essential amino acid -- however, in patients with phenylketonuria who lack phenylalanine hydroxylase and cannot convert phenylalanine into tyrosine, it is considered an essential nutrient. In vivo, tyrosine plays a role in protein synthesis and serves as a precursor for the synthesis of catecholamines, thyroxine, and melanin.

Tyrosine is from the group

Dietary Amino Acid
Non-Essential Amino Acid

Other Names for Tyrosine

L-Tyrosine
L-Phenylalanine, 4-hydroxy-
S)-2-Amino-3-(4-hydroxy-phenyl)propanoic acid
TYR
TYROSINE
TYROSINE, (L)
Tyr
Tyrosine

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