Polypeptide N-acetylgalactosaminyltransferase 14 (Galnt14)

Catalyzes the initial reaction in O-linked oligosaccharide biosynthesis, the transfer of an N-acetyl-D- galactosamine residue to a serine or threonine residue on the protein receptor. Displays activity toward mucin-derived peptide substrates such as Muc2, Muc5AC, Muc7, and Muc13 (-58).

May be involved in O-glycosylation in kidney (By similarity). .