sarcoglycan alpha
Dernière mise à jour 19 nov. 2025
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La SGCA gene provides instructions for making the alpha component (subunit) of a group of proteins called the sarcoglycan protein complex. The sarcoglycan protein complex is located in the membrane surrounding muscle cells. It helps maintain the structure of muscle tissue by attaching (binding) to and stabilizing the dystrophin complex, which is made up of proteins called dystrophins and dystroglycans. The large dystrophin complex strengthens muscle fibers and protects them from injury as muscles tense (contract) and relax. It acts as an anchor, connecting each muscle cell's structural framework (cytoskeleton) with the lattice of proteins and other molecules outside the cell (extracellular matrix).
Normal function
La SGCA gene provides instructions for making the alpha component (subunit) of a group of proteins called the sarcoglycan protein complex. The sarcoglycan protein complex is located in the membrane surrounding muscle cells. It helps maintain the structure of muscle tissue by attaching (binding) to and stabilizing the dystrophin complex, which is made up of proteins called dystrophins and dystroglycans. The large dystrophin complex strengthens muscle fibers and protects them from injury as muscles tense (contract) and relax. It acts as an anchor, connecting each muscle cell's structural framework (cytoskeleton) with the lattice of proteins and other molecules outside the cell (extracellular matrix).
Conditions referring to this gene or chromosome
Other names
50 kDa dystrophin-associated glycoprotein
50-DAG
50DAG
50kD DAG
adhalin
ADL
alpha-sarcoglycan
alpha-SG
DAG2
DMDA2
dystroglycan-2
LGMD2D
sarcoglycan, alpha (50kDa dystrophin-associated glycoprotein)
SCARMD1
SG-alpha
SGCA_HUMAN
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Lectures complémentaires et références
- sarcoglycan alpha; MedlinePlus, National Library of Medicine.
- Broglio L, Tentorio M, Cotelli MS, Mancuso M, Vielmi V, Gregorelli V, Padovani A, Filosto M. Limb-girdle muscular dystrophy-associated protein diseases. Neurologist. 2010 Nov;16(6):340-52. doi: 10.1097/NRL.0b013e3181d35b39.
- Guglieri M, Magri F, Comi GP. Molecular etiopathogenesis of limb girdle muscular and congenital muscular dystrophies: boundaries and contiguities. Clin Chim Acta. 2005 Nov;361(1-2):54-79. doi: 10.1016/j.cccn.2005.05.020.
- Guglieri M, Straub V, Bushby K, Lochmuller H. Limb-girdle muscular dystrophies. Curr Opin Neurol. 2008 Oct;21(5):576-84. doi: 10.1097/WCO.0b013e32830efdc2.
- Hack AA, Groh ME, McNally EM. Sarcoglycans in muscular dystrophy. Microsc Res Tech. 2000 Feb 1-15;48(3-4):167-80. doi: 10.1002/(SICI)1097-0029(20000201/15)48:3/43.0.CO;2-T.
- Laval SH, Bushby KM. Limb-girdle muscular dystrophies--from genetics to molecular pathology. Neuropathol Appl Neurobiol. 2004 Apr;30(2):91-105. doi: 10.1111/j.1365-2990.2004.00555.x.
- Meena AK, Sreenivas D, Sundaram C, Rajasekhar R, Sita JS, Borgohain R, Suvarna A, Kaul S. Sarcoglycanopathies: a clinico-pathological study. Neurol India. 2007 Apr-Jun;55(2):117-21. doi: 10.4103/0028-3886.32781.
- Ozawa E, Mizuno Y, Hagiwara Y, Sasaoka T, Yoshida M. Molecular and cell biology of the sarcoglycan complex. Muscle Nerve. 2005 Nov;32(5):563-76. doi: 10.1002/mus.20349.
- Sandona D, Betto R. Sarcoglycanopathies: molecular pathogenesis and therapeutic prospects. Expert Rev Mol Med. 2009 Sep 28;11:e28. doi: 10.1017/S1462399409001203.
- Straub V, Bushby K. The childhood limb-girdle muscular dystrophies. Semin Pediatr Neurol. 2006 Jun;13(2):104-14. doi: 10.1016/j.spen.2006.06.006.
- Trabelsi M, Kavian N, Daoud F, Commere V, Deburgrave N, Beugnet C, Llense S, Barbot JC, Vasson A, Kaplan JC, Leturcq F, Chelly J. Revised spectrum of mutations in sarcoglycanopathies. Eur J Hum Genet. 2008 Jul;16(7):793-803. doi: 10.1038/ejhg.2008.9. Epub 2008 Feb 20.
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