ID 2.3.1.136 DE polysialic-acid O-acetyltransferase. CA (1) [N-acetyl-alpha-D-neuraminosyl-(2->8)](n) + n acetyl-CoA = CA [O(7),N-diacetyl-alpha-D-neuraminosyl-(2->8)](n) + n CoA. CA (2) [N-acetyl-alpha-D-neuraminosyl-(2->8)](n) + n acetyl-CoA = [N,O(9)- CA diacetyl-alpha-D-neuraminosyl-(2->8)](n) + n CoA. CC -!- Acts only on substrates containing more than 14 sialosyl residues. CC -!- Catalyzes the modification of capsular polysaccharides in some CC strains of Escherichia coli. DR A1ADJ6, NEUO_ECOK1 ; //