2.3.1.255 A6P NAA10 variant c.16G>C has been identified in a male with intelectual disability and hypertrophic cardiomyopathy. A6P protein is highly reduced in its capacity to form the NatA complex, and displays a moderate reduction in monomeric NAA10 N-acteyltransferase function 777587 2.3.1.255 E157K NAA10 variant c.469G>A has been identified in a baby girl with cerebellar vermian hypoplasia with cystic dilatation of the 4th ventricle, a left pneumothorax and a heart murmur. Mutation does not impair NAA10-NAA15 binding and displays a moderate reduction in monomeric NAA10 N-acteyltransferase function 777587 2.3.1.255 E24A mutation in NatA, decrease in kcat, increase in Km value 736866 2.3.1.255 E24D mutation in NatA, decrease in kcat, increase in Km value 736866 2.3.1.255 E24Q mutation in NatA, decrease in kcat, increase in Km value 736866 2.3.1.255 E61A mutation in NatA, decrease in kcat, increase in Km value 736866 2.3.1.255 E62A mutation in NatA, decrease in kcat, increase in Km value 736866 2.3.1.255 F128I site-directed mutagenesis, the mutation leads an altered structure and reduced stability, and a dramatic recuction of Nt catalytic activity compared to wild-type 756675 2.3.1.255 F128L NAA10 variant c.384T>G has been identified in a boy with mixed specific developmental disorder 777587 2.3.1.255 F128L site-directed mutagenesis, the mutation leads an altered structure and reduced stability, and a dramatic recuction of Nt catalytic activity compared to wild-type 756675