Tags: Enzyme.
In enzymology a neolactotetraosylceramide alpha-23-sialyltransferase (EC 2.4.99.10) is an enzyme that catalyzes the chemical reactionCMP-N-acetylneuraminate + beta-D-galactosyl-14-N-acetyl-beta-D-glucosaminyl-13-beta-D- galactosyl-14-D-glucosylceramide CMP + alpha-N-acetylneuraminyl-23-beta-D-galactosyl-14-N-acetyl-beta-D- glucosaminyl-13-beta-D-galactosyl-14-D-glucosylceramideThe 3 substrates of this enzyme are CMP-N-acetylneuraminate beta-D-galactosyl-14-N-acetyl-beta-D-glucosaminyl-13-beta-D- and galactosyl-14-D-glucosylceramide whereas its 3 products are CMP alpha-N-acetylneuraminyl-23-beta-D-galactosyl-14-N-acetyl-beta-D- and glucosaminyl-13-beta-D-galactosyl-14-D-glucosylceramide.This enzyme belongs to the family of transferases specifically those glycosyltransferases that do not transfer hexosyl or pentosyl groups.