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

Definition of serine in English:


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.

Definition of serine in:
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