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Amine and Peptide Modulation of a Voltage-Sensitive, Plasma Membrane Ca2+-Channel in Crayfish Skeletal Muscle

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Frontiers in Crustacean Neurobiology

Part of the book series: Advances in Life Sciences ((ALS))

Summary

A large conductance channel in the plasma membrane of the crayfish tonic flexor muscle is modulated by the peptide proctolin. Proctolin alone has no effect on the channel, but renders it capable of sustained activity following a step depolarization. After depolarization induces activity, the open probability of the channel increases about 20 fold due to a marked decrease in the mean closed time at all voltages. Proctolin modulation occurs via an intracellular messenger, possibly cAMP. Modulation of the channel by proctolin varies seasonally, disappearing in the winter. Proctolin enhancement of channel activity can be restored in muscles from winter animals by pre-treating the muscles with octopamine.

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References

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Author information

Authors and Affiliations

  1. Department of Psychology, Stanford University, Stanford, CA, 94305, USA

    Cynthia A. Bishop, Mauri E. Krouse & Jeffrey J. Wine

Authors
  1. Cynthia A. Bishop
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  2. Mauri E. Krouse
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  3. Jeffrey J. Wine
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Editor information

Editors and Affiliations

  1. Zoologisches Institut, Universität Hamburg, Martin-Luther-King Platz 3, D-2000, Hamburg 13, Germany

    K. Wiese

  2. Zoologisches Institut, Universität Basel, Rheinsprung 9, CH-4051, Basel, Switzerland

    W.-D. Krenz

  3. Fakultät für Biologie, Universität Konstanz, Postfach 5560, D-7750, Konstanz, Germany

    J. Tautz

  4. Laboratoire de Neurobiologie, Département de Biologie Animale, Université de Genève, 20, rue Ecole de Médecine, CH-1211, Genève 4, Switzerland

    H. Reichert

  5. Zoology Department, University of California at Davis, 95616, Davis, CA, USA

    B. Mulloney

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© 1990 Springer Basel AG

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Bishop, C.A., Krouse, M.E., Wine, J.J. (1990). Amine and Peptide Modulation of a Voltage-Sensitive, Plasma Membrane Ca2+-Channel in Crayfish Skeletal Muscle. In: Wiese, K., Krenz, WD., Tautz, J., Reichert, H., Mulloney, B. (eds) Frontiers in Crustacean Neurobiology. Advances in Life Sciences. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-5689-8_46

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  • DOI: https://doi.org/10.1007/978-3-0348-5689-8_46

  • Publisher Name: Birkhäuser, Basel

  • Print ISBN: 978-3-0348-5691-1

  • Online ISBN: 978-3-0348-5689-8

  • eBook Packages: Springer Book Archive

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