Myristoylation

Overview
Myristoylation is an irreversible, post-translational protein modification found in animals, plants, fungi and viruses. In this protein modification a myristoyl group (derived from myristic acid) is covalently attached via an amide bond to the alpha-amino group of an N-terminal glycine residue of a nascent polypeptide. The modification is catalyzed by the enzyme N-myristoyltransferase, and occurs most commonly on glycine residues exposed during co-translational N-terminal methionine removal. Myristoylation also occurs post-translationally, for example when previously internal glycine residues become exposed by caspase cleavage during apoptosis.

Function
Myristoylation plays a vital role in membrane targeting and signal transduction in plant responses to environmental stress.