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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Mouse alpha 1- and beta 2-syntrophin gene structure, chromosome localization, and homology with a discs large domain.

The syntrophin family of dystrophin-associated proteins consists of three isoforms, alpha 1, beta 1, and beta 2, each encoded by a distinct gene. We have cloned and characterized the mouse alpha 1- and beta 2-syntrophin genes. The mouse alpha 1-syntrophin gene ( > 24 kilobases) is comprised of eight exons. The mouse beta 2-syntrophin gene ( > 33 kilobases) contains seven exons, all of which have homologues at the corresponding position in the alpha 1-syntrophin gene. Primer extension analysis reveals two transcription initiation sites in the alpha 1-syntrophin gene and a single site in the beta 2-syntrophin gene. The sequence immediately 5' of the transcription start sites of both genes lacks a TATA box but is GC-rich and has multiple putative SP1 binding sites. The alpha 1-syntrophin gene is located on human chromosome 20 and mouse chromosome 2, while the beta 2-syntrophin gene is on human chromosome 16 and mouse chromosome 8. Analysis of the amino acid sequence of the syntrophins reveals the presence of four conserved domains. The carboxyl-terminal 56 amino acids are highly conserved and constitute a syntrophin unique domain. Two pleckstrin homology domains are located at the amino-terminal end of the protein. The first pleckstrin homology domain is interrupted by a domain homologous to repeated sequences originally found in the Drosophila discs-large protein.[1]

References

  1. Mouse alpha 1- and beta 2-syntrophin gene structure, chromosome localization, and homology with a discs large domain. Adams, M.E., Dwyer, T.M., Dowler, L.L., White, R.A., Froehner, S.C. J. Biol. Chem. (1995) [Pubmed]
 
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