Abstract
Severe childhood autosomal recessive muscular dystrophy (SCARMD) is a progressive muscle-wasting disorder common in North Africa that segregates with microsatellite markers at chromosome 13q12. Here, it is shown that a mutation in the gene encoding the 35-kilodalton dystrophin-associated glycoprotein, gamma-sarcoglycan, is likely to be the primary genetic defect in this disorder. The human gamma-sarcoglycan gene was mapped to chromosome 13q12, and deletions that alter its reading frame were identified in three families and one of four sporadic cases of SCARMD. These mutations not only affect gamma-sarcoglycan but also disrupt the integrity of the entire sarcoglycan complex.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Amino Acid Sequence
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Animals
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Base Sequence
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Chromosome Mapping
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Chromosomes, Human, Pair 13*
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Cytoskeletal Proteins*
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DNA, Complementary / genetics
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Dystrophin / chemistry
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Dystrophin / genetics
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Dystrophin / metabolism
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Humans
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Linkage Disequilibrium
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Membrane Glycoproteins / chemistry
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Membrane Glycoproteins / genetics*
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Membrane Glycoproteins / metabolism
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Molecular Sequence Data
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Molecular Weight
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Muscle, Skeletal / chemistry
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Muscle, Skeletal / metabolism
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Muscular Dystrophies / genetics*
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Mutation
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Phenotype
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Rabbits
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Sarcoglycans
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Sequence Deletion
Substances
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Cytoskeletal Proteins
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DNA, Complementary
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Dystrophin
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Membrane Glycoproteins
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Sarcoglycans
Associated data
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GENBANK/U34976
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GENBANK/U36822