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Syntrophin, beta 2 (dystrophin-associated protein A1, 59kDa, basic component 2)
Available structures
PDB Ortholog search: PDBe, RCSB
Symbols SNTB2 ; D16S2531E; EST25263; SNT2B2; SNT3; SNTL
External IDs OMIM600027 MGI101771 HomoloGene4911 GeneCards: SNTB2 Gene
Species Human Mouse
Entrez 6645 20650
Ensembl ENSG00000168807 ENSMUSG00000041308
UniProt Q13425 Q61235
RefSeq (mRNA) NM_006750 NM_009229
RefSeq (protein) NP_006741 NP_033255
Location (UCSC) Chr 16:
69.22 – 69.34 Mb
Chr 8:
106.94 – 107.01 Mb
PubMed search [1] [2]

Beta-2-syntrophin is a protein that in humans is encoded by the SNTB2 gene.[1][2][3]


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.[3]


SNTB2 has been shown to interact with ABCA1.[4]


  1. ^ Ahn AH, Freener CA, Gussoni E, Yoshida M, Ozawa E, Kunkel LM (March 1996). "The three human syntrophin genes are expressed in diverse tissues, have distinct chromosomal locations, and each bind to dystrophin and its relatives". J Biol Chem 271 (5): 2724–30. doi:10.1074/jbc.271.5.2724. PMID 8576247. 
  2. ^ Ahn AH, Yoshida M, Anderson MS, Feener CA, Selig S, Hagiwara Y et al. (June 1994). "Cloning of human basic A1, a distinct 59-kDa dystrophin-associated protein encoded on chromosome 8q23-24". Proc Natl Acad Sci U S A 91 (10): 4446–50. doi:10.1073/pnas.91.10.4446. PMC 43802. PMID 8183929. 
  3. ^ a b "Entrez Gene: SNTB2 syntrophin, beta 2 (dystrophin-associated protein A1, 59kDa, basic component 2)". 
  4. ^ Buechler C, Boettcher A, Bared SM, Probst MC, Schmitz G (May 2002). "The carboxyterminus of the ATP-binding cassette transporter A1 interacts with a beta2-syntrophin/utrophin complex". Biochem. Biophys. Res. Commun. 293 (2): 759–65. doi:10.1016/S0006-291X(02)00303-0. PMID 12054535. 

Further reading[edit]