N-acetylglucosaminyltransferase N-acetylglucosylamine N-acetylglutamat N-acetylglutamate N-acetylglutamate synthetase deficiency N-acetylglutamate transferase deficiency N-acetylglutamic-γ-semialdehyde n-acetylglutamine N-acetylglycine N-acetylheparin-monosulfate N-acetylhexosamine ...