期刊
FEBS LETTERS
卷 572, 期 1-3, 页码 216-220出版社
WILEY
DOI: 10.1016/j.febslet.2004.07.032
关键词
muscular dystrophy; dystrophin-glycoprotein complex; mdx mouse; beta-dystroglycan; dystrophin-deficient muscle
beta-Dystroglycan is the central member of a transmembrane protein complex of the skeletal muscle plasma membrane. Since it was not detected in dystrophin-deficient skeletal muscles, a disruption of the complex was thought to be involved in the dystrophic process. We report here that beta-dystroglycan is actually present at normal levels in mdx mouse muscle plasma membrane: treatment with cholate detergent is able to reveal its presence by SDS-PAGE and immunoblotting. This result shows that, in dystrophin-deficient muscles, beta-dystroglycan is indeed targeted to the plasma membrane but remains inaccessible to classical solubilizing treatments and to antibodies used for immunolocalization. (C) 2004 Published by Elsevier B.V. on behalf of the Federation of European Biochemical Societies.
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