Definition of tyrosine in English:



mass nounBiochemistry
  • A hydrophilic amino acid which is a constituent of most proteins and is important in the synthesis of some hormones.

    Chemical formula: C₆H₄(OH)CH₂CH(NH₂)COOH

    • ‘Cysteine, tyrosine, asparagine and histidine are also attractive in this connection, because each of them is encoded by only two possible codons.’
    • ‘The most prevalent amino acid is cysteine with other major ones including tyrosine, histidine, lysine and arginine.’
    • ‘It preferentially hydrolyzes peptide bonds involving tyrosine, phenylalanine, and tryptophan.’
    • ‘Dopamine is made from the amino acids tyrosine and phenylalanine.’
    • ‘In animal cells serine, threonine and tyrosine are the amino acids subject to phosphorylation.’


Mid 19th century: formed irregularly from Greek turos ‘cheese’ + -ine.