Dystroglycan Proteins and Enzymes

Dystroglycan (also known as dystrophin-associated glycoprotein 1) is a member of the dystroglycan family that contains the WWW binding motif PPxY. This protein has alpha and beta subunits with approximate molecular weights of 156 kD and 43-50 kD, respectively. The dystroglycan beta subunit is an integral membrane protein, the alpha subunit is a ubiquitously expressed extracellular protein. Muscle and non-muscle isoforms differ by carbohydrate moieties (not protein sequence). Dystroglycan ...