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Modification post-traductionnelle

Une modification post-traductionnelle est une modification chimique d'une protéine, réalisée le plus souvent par une enzyme, après sa synthèse ou au cours de sa vie dans la cellule. Généralement cette modification entraîne un changement de la fonction de la protéine considérée, que ce soit au niveau de son action, de sa demi-vie, ou de sa localisation cellulaire.

Addition d'un groupe fonctionnel

Addition de groupes peptidiques ou de protéines

Changement de la nature chimique des acides aminés

Changements structuraux

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Modification post-traductionnelle
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