Dictionary
ty•ro•sine
Pronunciation: (tī'ru-sēn", -sin, tir'u-), [key]—
n. Biochem.
a crystalline amino acid, HOC
6H
4CH
2CH(NH
2)COOH, abundant in ripe cheese, that acts as a precursor of norepinephrine and dopamine.
Abbr.: Tyr;
Symbol: Y
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.