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. Expressed in primary spermatocytes, basal epidermis, interstitial fibroblasts of skeletal muscle, and intestinal crypts. Widely expressed in the embryo. Expressed in embryonic aorta and pulmonary arteries from E12 to E19. In carotid arteries, after mechanic injury. Belongs to the MAK10 family.