Galactose-3-O-sulfotransferase 4 (GAL3ST4)

Catalyzes the transfer of sulfate to beta-1,3-linked galactose residues in O-linked glycoproteins. Superior substrates include asialofetuin, Gal-beta-1,3-GalNAc and Gal-beta-1,3 (GlcNAc-beta-1,6)GalNAc.

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