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  • Title: Sarcoglycan complex: a muscular supporter of dystroglycan-dystrophin interplay?
    Author: Matsumura K, Saito F, Yamada H, Hase A, Sunada Y, Shimizu T.
    Journal: Cell Mol Biol (Noisy-le-grand); 1999 Sep; 45(6):751-62. PubMed ID: 10541473.
    Abstract:
    In striated muscle, the cytoskeletal protein dystrophin, the protein product of the Duchenne muscular dystrophy gene, is associated with a number of sarcolemmal glycoproteins to form a large oligomeric complex, the dystrophin-glycoprotein complex (DGC). Over the last 10 years, four of these sarcolemmal glycoproteins, alpha-, beta-, gamma- and delta-sarcoglycans, have been shown to form a distinct subcomplex, the sarcoglycan complex, in the DGC. Furthermore, the genetic defects of alpha-, beta-, gamma- and delta-sarcoglycans have been identified as the causes of four distinct forms of muscular dystrophies, which are now collectively called sarcoglycanopathy. Current studies are beginning to focus on the biological functions of the sarcoglycan complex and the molecular mechanism by which its dysfunction leads to muscle cell degeneration.
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