Alpha-N-Acetylneuraminate Alpha-2,8-Sialyltransferase Activity

Ganglioside GD3 Synthetase Sialyltransferase Activity

Catalysis of the reaction: CMP-N-acetylneuraminate + alpha-N-acetylneuraminyl-(2->3)-beta-D-galactosyl-R = CMP + alpha-N-acetylneuraminyl-(2->8)-alpha-N-acetylneuraminyl-(2->3)-beta-D-galactosyl-R.