polypeptide N-acetylgalactosaminyltransferase; protein-UDP acetylgalactosaminyltransferase; UDP-GalNAc:polypeptide N-acetylgalactosaminyl transferase; UDP-N-acetylgalactosamine:kappa-casein polypeptide N-acetylgalactosaminyltransferase; uridine diph • • •