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Synapsin I, A Phosphoprotein Associated with Synaptic Vesicles: Possible Role in Regulation of Neurotransmitter Release

  • Paul Greengard
  • Michael D. Browning
  • Teresa L. McGuinness
  • Rodolfo Llinas
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 221)

Abstract

Elucidation of the molecular events underlying communication between neurons is one of the most exciting problems in neuroscience. While it has been known for many years that the depolarization-dependent influx of calcium into the presynaptic terminal leads to the release of neurotransmitters, little is known about the molecular events which underly this presynaptic process. Similarly, although neurotransmitters are known to produce graded responses via interaction with specific receptors, little is known about the molecular events which underlie these postsynaptic responses. Although it has been generally assumed that protein molecules play important roles in the production of these responses, it is only within the last 15 years that we have come to understand how the activity of proteins could be regulated with a time course consistent with mediation or modulation of neuronal communication. What has become apparent during this period is that protein phosphorylation is a primary mechanism utilized by eukaryotic cells for post-translational regulation of protein function. Consequently, protein phosphorylation represents a conceptual framework for analysis of the molecular mechanisms which underly neuronal communcation. The scheme shown in Figure 1 summarizes our current concepts about the molecular pathways underlying biological regulation of neuronal communication.

Keywords

Synaptic Vesicle Protein Phosphorylation Dependent Protein Kinase Calmodulin Kinase Rhodopsin Kinase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • Paul Greengard
    • 1
  • Michael D. Browning
    • 1
  • Teresa L. McGuinness
    • 1
  • Rodolfo Llinas
    • 2
  1. 1.The Rockefeller UniversityNew YorkUSA
  2. 2.Department of Physiology and BiophysicsNew York University Medical CenterNew YorkUSA

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