This gene encodes GalNAc transferase 7, a member of the GalNAc-transferase family. The enzyme encoded by this gene controls the initiation step of mucin-type O-linked protein glycosylation and transfer of N-acetylgalactosamine to serine and threonine amino acid residues. This enzyme is a type II transmembrane protein and shares common sequence motifs with other family members. Unlike other family members, this enzyme shows exclusive specificity for partially GalNAc-glycosylated acceptor substrates and shows no activity with non-glycosylated peptides. This protein may function as a follow-up enzyme in the initiation step of O-glycosylation. [provided by RefSeq, Jul 2008].
Stadler, Rexhepaj, Singan, Murphy, Pepperkok, Uhlén, Simpson, Lundberg: "Immunofluorescence and fluorescent-protein tagging show high correlation for protein localization in mammalian cells." in: Nature methods, Vol. 10, Issue 4, pp. 315-23, (2013) (PubMed).