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Chemistry LibreTexts

Post-Translational Modification

[ "article:topic", "authorname:ggunawardena" ]
  • Page ID
    40885
  • The chemical modification of an amino acid residue in a peptide molecule is called post-translational modification, the consequence of which is the occurrence of nonstandard amino acids in peptides.

    eg:  The protein collagen contains 5-hydroxylysine, a nonstandard amino acid, which is formed by the modification of lysine, a standard amino acid, after the collagen molecule is synthesized.