Definition of tyrosine in English:


Syllabification: ty·ro·sine
Pronunciation: /ˈtīrəˌsēn


A hydrophilic amino acid that is a constituent of most proteins and is important in the synthesis of some hormones.
More example sentences
  • In animal cells serine, threonine and tyrosine are the amino acids subject to phosphorylation.
  • It preferentially hydrolyzes peptide bonds involving tyrosine, phenylalanine, and tryptophan.
  • The most prevalent amino acid is cysteine with other major ones including tyrosine, histidine, lysine and arginine.


mid 19th century: formed irregularly from Greek turos 'cheese' + -ine4.

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