Reaction catalyzed by N-acetylneuraminate 7-O(or 9-O)-acetyltransferase (2.3.1.45)
+
=
CoA
+
+
acetyl-CoA
+
CMP-N-acetylneuraminate
=
CoA
+
N-acetyl-9-O-acetylneuraminate
+
CMP
