Definition of serine in English:


Syllabification: ser·ine
Pronunciation: /ˈserēn, ˈsi(ə)r-, -in


  • A hydrophilic amino acid that is a constituent of most proteins.
    • Chemical formula: CH2OHCHNH2COOH
    More example sentences
    • The active site of trypsin involves a catalytic triad consisting of the amino acids serine, histidine and aspartic acid.
    • In animal cells serine, threonine and tyrosine are the amino acids subject to phosphorylation.
    • Hydroxyl radicals oxidize amino acids such as lysine, serine, arginine, and proline.


late 19th century: from Latin sericum 'silk' + -ine4.

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Pronunciation: skəʊʃ
a small amount; a little