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Chemistry LibreTexts

Post-Translational Modification

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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.

posttranslationalmodification.png


This page titled Post-Translational Modification is shared under a All Rights Reserved (used with permission) license and was authored, remixed, and/or curated by Gamini Gunawardena via source content that was edited to the style and standards of the LibreTexts platform.

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