After removal of the N-terminal methionine (Met) residue, the enzymes glycylpeptide N-tetradecanoyltransferase 1 and 2 (NMT1 and 2) mediate the transfer of the myristoyl (MYS) group from myristoyl-CoA to the now N-terminal glycine (Gly) residue of transducin's alpha subunit (GNAT1) (Glover et al. 1997, Giang & Cravatt 1998). Myristoylation is thought to aid enzyme function and localization. Evidence from chicken experiments suggest non-myristoylated proteins do not bind to membranes (Kamps et al. 1986).