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Biophysics of structure and mechanism

, Volume 3, Issue 2, pp 141–143 | Cite as

Calcium ion, a putative intracellular messenger for light-adaptation in Limulus ventral photoreceptors

  • J. E. Brown
Article

Abstract

Calcium ion fulfills several criteria for identifying an intracellular messenger for light-adaptation in Limulus photoreceptors. Direct injection of Ca++ mimicks two aspects of light-adaptation; sequestration of intracellular calcium tends to prevent light-adaptation; and light induces an increase in intracellular Ca++ as demonstrated by two independent techniques.

Key words

Calcium Limulus Photoreceptors Adaptation 

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References

  1. Brown, J. E., Blinks, J. R.: Changes in intracellular free calcium during illumination of invertebrate photoreceptors: detection with aequorin. J. gen. Physiol. 64, 643–665 (1974)Google Scholar
  2. Brown, J. E., Brown, P. K., Pinto, L. H.: Detection of light-induced changes of intracellular ionized calcium concentration in Limulus ventral photoreceptors using arsenazo III. J. Physiol. (in press) 1976Google Scholar
  3. Brown, J. E., Lisman, J. E.: Intracellular Ca modulates both sensitivity and time scale in Limulus with ventral photoreceptors. Nature (Lond.) 258, 252–253(1975)Google Scholar
  4. Lisman, J. E., Brown, J. E.: The effects of intracellular Ca2+ on the light response and on light adaptation in Limulus ventral photoreceptors. In: The visual system: Neurophysiology, biophysics and their clinical applications, (ed. G. B. Arden), pp. 23–33. New York: Plenum Press 1972Google Scholar
  5. Lisman, J. E., Brown, J. E.: Effects of intracellular injection of calcium buffers on light adaptation in Limulus ventral photoreceptors. J. gen. Physiol. 66, 489–506 (1975)Google Scholar

Copyright information

© Springer-Verlag 1977

Authors and Affiliations

  • J. E. Brown
    • 1
    • 2
  1. 1.Department of Physiology and BiophysicsSunyStony BrookUSA
  2. 2.Marine Biological LaboratoryWoods HoleUSA

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