Auxillary component of the N-terminal acetyltransferase C (NatC) complex which catalyzes acetylation of N-terminal methionine residues. Involved in regulation of apoptosis and proliferation of smooth muscle cells. Component of the N-terminal acetyltransferase C (NatC) complex, which is composed of NAA35, NAA38 and NAA30. Belongs to the MAK10 family.