Entrez Summary: This gene encodes a member of the glycosyltransferase 31 family. The encoded protein synthesizes GalNAc:beta-1,3GlcNAc, a novel carbohydrate structure, on N- and O-glycans. Alternatively spliced transcript variants that encode different isoforms have been described. [provided by RefSeq, Mar 2013].
UniProt Summary: Beta-1,3-N-acetylgalactosaminyltransferase that synthesizes a unique carbohydrate structure, GalNAc-beta-1- 3GlcNAc, on N- and O-glycans. Has no galactose nor galactosaminyl transferase activity toward any acceptor substrate. Involved in alpha-dystroglycan (DAG1) glycosylation: acts coordinately with GTDC2/POMGnT2 to synthesize a GalNAc-beta3-GlcNAc-beta-terminus at the 4-position of protein O-mannose in the biosynthesis of the phosphorylated O-mannosyl trisaccharide (N-acetylgalactosamine- beta-3-N-acetylglucosamine-beta-4-(phosphate-6-)mannose), a carbohydrate structure present in alpha-dystroglycan, which is required for binding laminin G-like domain-containing extracellular proteins with high affinity. {ECO:0000269|PubMed:14724282, ECO:0000269|PubMed:23453667, ECO:0000269|PubMed:23929950}.
Pfam DomainsGO Terms
Pfam Domains
Galactosyl T
GO Terms
galactosyltransferase activity
acetylgalactosaminyltransferase activity
acetylglucosaminyltransferase activity
protein O-linked glycosylation
macromolecule glycosylation
protein glycosylation
glycosylation
glycoprotein biosynthetic process
glycoprotein metabolic process
carbohydrate derivative biosynthetic process
Golgi membrane
endoplasmic reticulum membrane
Golgi apparatus
endoplasmic reticulum
carbohydrate derivative metabolic process
organonitrogen compound biosynthetic process
cellular macromolecule biosynthetic process
macromolecule biosynthetic process
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)