Syntrophin,_alpha_1

Syntrophin, alpha 1

Syntrophin, alpha 1

Protein-coding gene in the species Homo sapiens


Alpha-1-syntrophin is a protein that in humans is encoded by the SNTA1 gene.[5][6][7] Alpha-1 syntrophin is a signal transducing adaptor protein and serves as a scaffold for various signaling molecules. Alpha-1 syntrophin contains a PDZ domain, two Pleckstrin homology domain and a 'syntrophin unique' domain.

Quick Facts SNTA1, Available structures ...

Function

Dystrophin is a large, rod-like cytoskeletal protein found at the inner surface of muscle fibers. Dystrophin is missing in Duchenne Muscular Dystrophy patients and is present in reduced amounts in Becker Muscular Dystrophy patients. The protein encoded by this gene is a peripheral membrane protein found associated with dystrophin and dystrophin-related proteins. This gene is a member of the syntrophin gene family, which contains at least two other structurally related genes.[7] The PDZ domain of syntrophin-α1(SNTA1), the most abundant isoform in the heart, has been reported to bind to the C-terminal domain of murine cardiac voltage-gated sodium channels (SkM2) causing altering ion channel activity leading to Long QT syndrome.[8][9]

Interactions

Syntrophin, alpha 1 has been shown to interact with Dystrophin,[5][10][11] Nav1.1[11] and Nav1.5,[11] and Aquaporin 4.[12]


References

  1. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  2. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  3. Castelló A, Brochériou V, Chafey P, Kahn A, Gilgenkrantz H (Jun 1996). "Characterization of the dystrophin-syntrophin interaction using the two-hybrid system in yeast". FEBS Lett. 383 (1–2): 124–8. doi:10.1016/0014-5793(96)00214-1. PMID 8612778. S2CID 27278535.
  4. Wu G, Ai T, Kim JJ, Mohapatra B, Xi Y, Li Z, Abbasi S, Purevjav E, Samani K, Ackerman MJ, Qi M, Moss AJ, Shimizu W, Towbin JA, Cheng J, Vatta M (Aug 2008). "Alpha-1-syntrophin mutation and the long-QT syndrome: a disease of sodium channel disruption". Circ Arrhythmia Electrophysiol. 1 (3): 193–201. doi:10.1161/CIRCEP.108.769224. PMC 2726717. PMID 19684871.
  5. Hedley PL, Jørgensen P, Schlamowitz S, Wangari R, Moolman-Smook J, Brink PA, Kanters JK, Corfield VA, Christiansen M (2009). "The genetic basis of long QT and short QT syndromes: a mutation update". Human Mutation. 30 (11): 1486–511. doi:10.1002/humu.21106. PMID 19862833. S2CID 19122696.
  6. Yang B, Jung D, Rafael JA, Chamberlain JS, Campbell KP (Mar 1995). "Identification of alpha-syntrophin binding to syntrophin triplet, dystrophin, and utrophin". J. Biol. Chem. 270 (10): 4975–8. doi:10.1074/jbc.270.10.4975. PMID 7890602.
  7. Neely JD, Amiry-Moghaddam M, Ottersen OP, Froehner SC, Agre P, Adams ME (November 2001). "Syntrophin-dependent expression and localization of Aquaporin-4 water channel protein". Proc. Natl. Acad. Sci. U.S.A. 98 (24): 14108–13. Bibcode:2001PNAS...9814108N. doi:10.1073/pnas.241508198. PMC 61176. PMID 11717465.

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