Glycosyltransferase which participates in glycosylation of alpha-dystroglycan. May carry out the synthesis of glycoprotein and glycosphingolipid sugar chains. May be involved in the addition of a repeated disaccharide unit. Defects in LARGE are the cause of muscular dystrophy- dystroglycanopathy congenital with mental retardation type B6 (MDDGB6). A congenital muscular dystrophy associated with profound mental retardation, white matter changes and structural brain abnormalities. Skeletal muscle biopsies show reduced immunolabeling of alpha-dystroglycan. Defects in LARGE are the cause of muscular dystrophy- dystroglycanopathy congenital with brain and eye anomalies type A6 (MDDGA6); also called muscle-eye-brain disease LARGE- related or Walker-Warburg syndrome LARGE-related. MDDGA6 is an autosomal recessive disorder characterized by congenital muscular dystrophy associated with cobblestone lissencephaly and other brain anomalies, eye malformations, profound mental retardation, and death usually in the first years of life. Included diseases are the more severe Walker-Warburg syndrome and the slightly less severe muscle-eye-brain disease. Belongs to the glycosyltransferase 8 family. 2 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Protein type: EC 2.4.-.-; Membrane protein, integral; Transferase