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Gene Review

Syn3  -  synapsin III

Mus musculus

Synonyms: Synapsin III, Synapsin IIIa, Synapsin-3
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High impact information on Syn3

  • Synapsin IIIa is associated with synaptic vesicles, and its expression appears to be neuron-specific [1].
  • Many synapsin III-positive neurons also reacted with an antibody directed toward polysialylated-neuronal cell adhesion molecule, a marker of immature, migrating neurons [2].
  • However, unexpectedly, synapsin III was also highly expressed in the cell body and processes of immature neurons in neurogenic regions of the adult brain, such as the hippocampal dentate gyrus, rostral migratory stream, and olfactory bulb [2].
  • Syn3 provides high levels of intravesical adenoviral-mediated gene transfer for gene therapy of genetically altered urothelium and superficial bladder cancer [3].
  • Synapsin III is the most recently identified member of the synapsin family, a group of synaptic vesicle proteins that play essential roles in neurotransmitter release and neurite outgrowth [4].

Biological context of Syn3

  • The number of vesicles that fuse per action potential was similar between synapsin III knock-out and wild-type mice, and there was no change in the quantal content of EPSCs; however, IPSCs were greatly reduced in synapsin III-deficient neurons [4].

Anatomical context of Syn3


Other interactions of Syn3

  • The results indicate that synapsin III has a developmental time course, a subcellular localization, and a developmental function very different from those of synapsin I and synapsin II [5].


  1. A third member of the synapsin gene family. Kao, H.T., Porton, B., Czernik, A.J., Feng, J., Yiu, G., Häring, M., Benfenati, F., Greengard, P. Proc. Natl. Acad. Sci. U.S.A. (1998) [Pubmed]
  2. Expression of synapsin III in nerve terminals and neurogenic regions of the adult brain. Pieribone, V.A., Porton, B., Rendon, B., Feng, J., Greengard, P., Kao, H.T. J. Comp. Neurol. (2002) [Pubmed]
  3. Syn3 provides high levels of intravesical adenoviral-mediated gene transfer for gene therapy of genetically altered urothelium and superficial bladder cancer. Yamashita, M., Rosser, C.J., Zhou, J.H., Zhang, X.Q., Connor, R.J., Engler, H., Maneval, D.C., Karashima, T., Czerniak, B.A., Dinney, C.P., Benedict, W.F. Cancer Gene Ther. (2002) [Pubmed]
  4. Regulation of neurotransmitter release by synapsin III. Feng, J., Chi, P., Blanpied, T.A., Xu, Y., Magarinos, A.M., Ferreira, A., Takahashi, R.H., Kao, H.T., McEwen, B.S., Ryan, T.A., Augustine, G.J., Greengard, P. J. Neurosci. (2002) [Pubmed]
  5. Synapsin III: developmental expression, subcellular localization, and role in axon formation. Ferreira, A., Kao, H.T., Feng, J., Rapoport, M., Greengard, P. J. Neurosci. (2000) [Pubmed]
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