Positive Control: Jurkat, A549, Hela, rat epididymis tissue, human lung cancer tissue, human colon cancer tissue, mouse testis tissue. Converts UDP and GlcNAc-1-P into UDP-GlcNAc, and UDP and GalNAc-1-P into UDP-GalNAc. Isoform AGX1 has 2 to 3 times high