Sarcoglycan
| Sarcoglycan beta/gamma/delta | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| Symbol | Sarcoglycan_1 | ||||||||
| Pfam | PF04790 | ||||||||
| InterPro | IPR006875 | ||||||||
| Membranome | 117 | ||||||||
| |||||||||
| Sarcoglycan alpha/epsilon | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| Symbol | Sarcoglycan_2 | ||||||||
| Pfam | PF05510 | ||||||||
| InterPro | IPR008908 | ||||||||
| |||||||||
The sarcoglycans are a family of transmembrane proteins[1] (α, β, γ, δ or ε) involved in the protein complex responsible for connecting the muscle fibre cytoskeleton to the extracellular matrix, preventing damage to the muscle fibre sarcolemma through shearing forces.
The dystrophin glycoprotein complex (DGC) is a membrane-spanning complex that links the interior cytoskeleton to the extracellular matrix in muscle. The sarcoglycan complex is a subcomplex within the DGC and is composed of six muscle-specific, transmembrane proteins (alpha-, beta-, gamma-, delta-, epsilon-,and zeta-sarcoglycan).[2] The sarcoglycans are asparagine-linked glycosylated proteins with single transmembrane domains.[3][4]
The disorders caused by the mutations of the sarcoglycans are called sarcoglycanopathies. Mutations in the α, β, γ or δ genes (not ε) encoding these proteins can lead to the associated limb-girdle muscular dystrophy.
Genes
[edit]References
[edit]- ^ Sarcoglycans at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
- ^ "SGCZ sarcoglycan zeta [Homo sapiens (human)] - Gene - NCBI". www.ncbi.nlm.nih.gov. Retrieved 1 December 2021.
- ^ Chockalingam PS, Cholera R, Oak SA, Zheng Y, Jarrett HW, Thomason DB (August 2002). "Dystrophin-glycoprotein complex and Ras and Rho GTPase signaling are altered in muscle atrophy". American Journal of Physiology. Cell Physiology. 283 (2): C500-11. doi:10.1152/ajpcell.00529.2001. PMID 12107060.
- ^ Wheeler MT, Zarnegar S, McNally EM (September 2002). "Zeta-sarcoglycan, a novel component of the sarcoglycan complex, is reduced in muscular dystrophy". Human Molecular Genetics. 11 (18): 2147–54. doi:10.1093/hmg/11.18.2147. PMID 12189167.
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