Human Polypeptide GalNac Transferase 3 Protein is a recombinant protein from Human produced in Human Cells. Recombinant Human Polypeptide N-acetylgalactosaminyltransferase 3 is produced by our Mammalian expression system and the target gene encoding Gln38-Asp633 is expressed with a 6His tag at the C-terminus.