N-acetylneuraminate + acetyl-CoA = N-acetyl-4-O-acetylneuraminate + CoA
n-acetylneuraminate + acetyl-coa = n-acetyl-4-o-acetylneuraminate + coa
"N-acetylneuraminate 4-O-acetyltransferase"
"n-acetylneuraminate 4-o-acetyltransferase"