GALNT7 Recombinant Protein

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]

GALNT7: a glycopeptide transferase involved in O-linked oligosaccharide biosynthesis, which catalyzes the transfer of an N-acetyl-D-galactosamine residue to an already glycosylated peptide. A single-pass type II membrane protein that localizes to the Golgi apparatus membrane. In contrast to other proteins of the family, it does not act as a peptide transferase that transfers GalNAc onto serine or threonine residue on the protein receptor, but instead requires the prior addition of a GalNAc on a peptide before adding additional GalNAc moieties.

Protein type: EC 2.4.1.-; Glycan Metabolism - O-glycan biosynthesis; Transferase; Membrane protein, integral

Chromosomal Location of Human Ortholog: 4q31.1

Cellular Component: Golgi membrane; membrane; integral to membrane

Molecular Function: metal ion binding; polypeptide N-acetylgalactosaminyltransferase activity; carbohydrate binding

Biological Process: protein amino acid O-linked glycosylation; cellular protein metabolic process; O-glycan processing; carbohydrate metabolic process; post-translational protein modification