alpha-1,4-N-acetylgalactosaminyltransferase activity
Catalysis of the reaction: an N-acetyl-beta-D-galactosaminyl derivative + UDP-N-acetyl-alpha-D-galactosamine = an N-acetyl-alpha-D-galactosaminyl-(1->4)-N-acetyl-beta-D-galactosaminyl derivative + UDP + H+.
GO:0008376
acetylgalactosaminyltransferase activity
is_a
alpha-1,4-GalNAc transferase activity
exact