Enables N-acetyltransferase activity. Predicted to be involved in several processes, including N-terminal peptidyl-methionine acetylation; positive regulation of transcription, DNA-templated; and protein stabilization. Predicted to act upstream of or within angiogenesis and cell differentiation. Located in cytoplasm. Is expressed in several structures, including brain; cornea endothelium; genitourinary system; gut; and hemolymphoid system gland. Human ortholog(s) of this gene implicated in autosomal dominant mental retardation 50. Orthologous to human NAA15 (N-alpha-acetyltransferase 15, NatA auxiliary subunit). [provided by Alliance of Genome Resources, Apr 2022]