ID   2.4.1.244
DE   N-acetyl-beta-glucosaminyl-glycoprotein 4-beta-N-
DE   acetylgalactosaminyltransferase.
AN   beta1,4-N-acetylgalactosaminyltransferase.
AN   beta4GalNAc-T3.
AN   beta4GalNAc-T4.
CA   an N-acetyl-beta-D-glucosaminyl derivative + UDP-N-acetyl-alpha-D-
CA   galactosamine = an N-acetyl-beta-D-galactosaminyl-(1->4)-N-acetyl-beta-D-
CA   glucosaminyl derivative + H(+) + UDP.
CC   -!- The enzyme from human can transfer N-acetyl-D-galactosamine (GalNAc)
CC       to N-glycan and O-glycan substrates that have N-acetyl-D-glucosamine
CC       (GlcNAc) but not D-glucuronic acid (GlcUA) at their non-reducing end.
CC   -!- The N-acetyl-beta-D-glucosaminyl group is normally on a core
CC       oligosaccharide although benzyl glycosides have been used in enzyme-
CC       characterization experiments.
CC   -!- Some glycohormones, e.g. lutropin and thyrotropin contain the
CC       N-glycan structure containing the N-acetyl-beta-D-galactosaminyl-
CC       (1->4)-N-acetyl-beta-D-glucosaminyl group.
DR   Q6L9W6, B4GN3_HUMAN;  Q6L8S8, B4GN3_MOUSE;  Q76KP1, B4GN4_HUMAN;
DR   Q766D5, B4GN4_MOUSE;
//