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STXBP5

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Template:PBB Syntaxin-binding protein 5 is a protein that in humans is encoded by the STXBP5 gene.[1][2][3]

Function

Syntaxin 1 is a component of the 7S and 20S SNARE complexes which are involved in docking and fusion of synaptic vesicles with the presynaptic plasma membrane. This gene encodes a syntaxin 1 binding protein. In rat, a similar protein dissociates syntaxin 1 from the Munc18/n-Sec1/rbSec1 complex to form a 10S complex, an intermediate which can be converted to the 7S SNARE complex. Thus this protein is thought to be involved in neurotransmitter release by stimulating SNARE complex formation. Alternatively spliced variants have been identified, but their biological validity has not been determined.[3]

Interactions

STXBP5 has been shown to interact with STX4[4] and STX1A.[1][4]

References

  1. ^ a b Fujita Y, Shirataki H, Sakisaka T, Asakura T, Ohya T, Kotani H, Yokoyama S, Nishioka H, Matsuura Y, Mizoguchi A, Scheller RH, Takai Y (Jun 1998). "Tomosyn: a syntaxin-1-binding protein that forms a novel complex in the neurotransmitter release process". Neuron. 20 (5): 905–15. doi:10.1016/S0896-6273(00)80472-9. PMID 9620695.
  2. ^ Katoh M, Katoh M (Feb 2004). "Identification and characterization of human LLGL4 gene and mouse Llgl4 gene in silico". Int. J. Oncol. 24 (3): 737–42. doi:10.3892/ijo.24.3.737. PMID 14767561.
  3. ^ a b "Entrez Gene: STXBP5 syntaxin binding protein 5 (tomosyn)".
  4. ^ a b Widberg CH, Bryant NJ, Girotti M, Rea S, James DE (Sep 2003). "Tomosyn interacts with the t-SNAREs syntaxin4 and SNAP23 and plays a role in insulin-stimulated GLUT4 translocation". J. Biol. Chem. 278 (37): 35093–101. doi:10.1074/jbc.M304261200. PMID 12832401.{{cite journal}}: CS1 maint: unflagged free DOI (link)

Further reading

  • Olsen JV, Blagoev B, Gnad F, Macek B, Kumar C, Mortensen P, Mann M (2006). "Global, in vivo, and site-specific phosphorylation dynamics in signaling networks". Cell. 127 (3): 635–48. doi:10.1016/j.cell.2006.09.026. PMID 17081983.
  • Widberg CH, Bryant NJ, Girotti M, Rea S, James DE (2003). "Tomosyn interacts with the t-SNAREs syntaxin4 and SNAP23 and plays a role in insulin-stimulated GLUT4 translocation". J. Biol. Chem. 278 (37): 35093–101. doi:10.1074/jbc.M304261200. PMID 12832401.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  • Yokoyama S, Shirataki H, Sakisaka T, Takai Y (1999). "Three splicing variants of tomosyn and identification of their syntaxin-binding region". Biochem. Biophys. Res. Commun. 256 (1): 218–22. doi:10.1006/bbrc.1999.0300. PMID 10066450.


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