ID 2.3.1.44 DE N-acetylneuraminate 4-O-acetyltransferase. CA acetyl-CoA + N-acetylneuraminate = CoA + N-acetyl-4-O-acetylneuraminate. CC -!- Both free and glycosidically bound N-acetyl- and N-glycolyl- CC neuraminates can act as O-acetyl acceptors. //