Enables glycylpeptide N-tetradecanoyltransferase activity. Predicted to be involved in protein localization to membrane. Located in membrane. Is expressed in several structures, including adult head; central brain primordium; head mesoderm; trunk mesoderm; and trunk visceral muscle primordium. Orthologous to human NMT1 (N-myristoyltransferase 1) and NMT2 (N-myristoyltransferase 2).