In vertebrates, this modification is carried about by two NMTs, NMT1 and NMT2, both of which are members of the GCN5 acetyltransferase superfamily.
Nos vertebrados, esta modificación lévana a cabo dúas NMTs, que se denominan NMT1 e NMT2, ambas as dúas membros da superfamilia das acetiltransferases GCN5.