polysialic-acid O-acetyltransferase activity
Catalysis of the reaction: acetyl-CoA + an alpha-2,8-linked polymer of sialic acid = CoA + polysialic acid acetylated at O-7 or O-9.
GO:0016413
O-acetyltransferase activity
is_a
acetyl-CoA:polysialic-acid O-acetyltransferase activity
exact