Xylosyl- and glucuronyltransferase LARGE1

UniProtKB accession:  O95461

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Bifunctional glycosyltransferase with both alpha-1,3-xylosyltransferase and beta-1,3-glucuronyltransferase activities involved in the maturation of alpha-dystroglycan (DAG1) by glycosylation leading to DAG1 binding to laminin G-like domain-containing extracellular proteins with high affinity (PubMed:22223806, PubMed:15752776, PubMed:15661757, PubMed:25279699, PubMed:25279697, PubMed:23125099, PubMed:21987822). Elongates the glucuronyl-beta-1,4-xylose-beta disaccharide primer structure initiated by B4GAT1 by adding repeating units [-3-Xylose-alpha-1,3-GlcA-beta-1-] to produce a heteropolysaccharide (PubMed:22223806, PubMed:25279699, PubMed:25279697, PubMed:25138275, PubMed:32975514, PubMed:23125099). Requires the phosphorylation of core M3 (O-mannosyl trisaccharide) by POMK to elongate the glucuronyl-beta-1,4-xylose-beta disaccharide primer (PubMed:21987822). Plays a key role in skeletal muscle function and regeneration (By similarity).