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  • Title: Dystroglycan and muscular dystrophies related to the dystrophin-glycoprotein complex.
    Author: Sciandra F, Bozzi M, Bianchi M, Pavoni E, Giardina B, Brancaccio A.
    Journal: Ann Ist Super Sanita; 2003; 39(2):173-81. PubMed ID: 14587215.
    Abstract:
    Dystroglycan (DG) is an adhesion molecule composed of two subunits, alpha and beta, that are produced by the post-translational cleavage of a single precursor molecule. DG is a pivotal component of the dystrophin-glycoprotein complex (DGC), which connects the extracellular matrix to the cytoskeleton in skeletal muscle and many other tissues. Some muscular dystrophies are caused by mutations of DGC components, such as dystrophin, sarcoglycan or laminin-2, or also of DGC-associated molecules, such as caveolin-3. DG-null mice died during early embriogenesis and no neuromuscular diseases directly associated to genetic abnormalities of DG were identified so far. However, DG plays a crucial role for muscle integrity since its targeting at the sarcolemma is often perturbed in DGC-related neuromuscular disorders.
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