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Related Experiment Video

Updated: Jul 6, 2026

Studying Protein Function and the Role of Altered Protein Expression by Antibody Interference and Three-dimensional Reconstructions
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Studying Protein Function and the Role of Altered Protein Expression by Antibody Interference and Three-dimensional Reconstructions

Published on: April 21, 2016

Altered complexin expression in psychiatric and neurological disorders: cause or consequence?

Nils Brose1

  • 1Department of Molecular Neurobiology, Max Planck Institute of Experimental Medicine, Hermann-Rein-Strasse 3, D-37075 Goettingen, Germany. brose@em.mpg.de

Molecules and Cells
|March 6, 2008
PubMed
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Complexins regulate fast neurotransmitter release by binding SNARE complexes. While altered Complexin levels are linked to brain disorders, they likely contribute to symptoms rather than cause the diseases.

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Cell Biology

Background:

  • Complexins are crucial for fast, synchronous neurotransmitter release.
  • They bind to SNARE complexes (Synaptobrevin, Syntaxin, SNAP-25), stabilizing them for membrane fusion.
  • Altered Complexin levels are implicated in various neurological and psychiatric disorders.

Purpose of the Study:

  • To review the role of altered Complexin expression in brain diseases.
  • To assess the etiological significance of Complexin dysregulation in neurological disorders.

Main Methods:

  • Literature review of studies investigating Complexin expression in neurological and psychiatric conditions.
  • Analysis of existing data on the functional roles of Complexins in synaptic transmission.

Main Results:

  • Genetic deletion of Complexins significantly reduces evoked neurotransmitter release.
  • Evidence suggests Complexin expression changes may not be causal but contribute to disease symptoms.
  • Implicated disorders include schizophrenia, Parkinson's, Alzheimer's, and TBI.

Conclusions:

  • Complexins are essential regulators of synaptic vesicle release.
  • Altered Complexin expression is unlikely to be a primary cause of implicated brain diseases.
  • Complexin dysregulation may, however, modulate disease symptomatology.