Definition of serine in English:

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Pronunciation: /ˈserēn/ Pronunciation: /ˈsi(ə)r-/ Pronunciation: /-in/


A hydrophilic amino acid that is a constituent of most proteins.
  • Chemical formula: CH2OHCHNH2COOH.
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.

For editors and proofreaders

Syllabification: ser·ine

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