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The electromotor system of Torpedo

A model cholinergic system

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Abstract

The electric organ of Torpedo, besides providing abundant amounts of cholinoceptive post-synaptic membrane for the isolation of the acetylcholine receptor protein, is a rich source of cholinergic nerve terminals. Using perfused, innervated tissue blocks from which synaptic vesicles in different functional states can be isolated, much information can be obtained about synaptic-vesicle dynamics. So far this is consistent with the view that the synaptic vesicles are the source of transmitter released on stimulation and that uptake of newly synthesized transmitter by the vesicles is dependent on their having discharged their previous charge of transmitter in at least one cycle of exo- and endocytosis. Studies of the protein composition of the vesicle membrane, especially when combined with similar information about the external presynaptic membrane, purified samples of which are now available from synaptosome (T-sac) preparations, promise to throw new light on the molecular mechanism underlying vesicle exo-/endocytosis.

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Authors and Affiliations

  1. Abteilung Neurochemie, Max-Planck-Institut für Biophysikalische Chemie, D-3400, Göttingen

    V. P. Whittaker

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  1. V. P. Whittaker
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Summary of a lecture given at an international Symposium on Cholinergic Mechanisms held at La Jolla, Calif., USA, March 1977

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Whittaker, V.P. The electromotor system of Torpedo . Naturwissenschaften 64, 606–611 (1977). https://doi.org/10.1007/BF00440092

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  • DOI: https://doi.org/10.1007/BF00440092

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