N-acetyl-beta-glucosaminyl-glycoprotein 4-beta-N-acetylgalactosaminyltransferase 1 (B4galnt4)

Transfers N-acetylgalactosamine (GalNAc) from UDP-GalNAc into N-acetylglucosamine-beta-benzyl with a beta-1,4-linkage to form N,N'-diacetyllactosediamine, GalNAc-beta-1,4-GlcNAc structures in N-linked glycans and Likely O-linked glycans.

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