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Journal Article

Precipitation membrane effects in biologic membranes: The role of calcium

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Hirsch-Ayalon,  Paul
Department of Physical Chemistry, Max Planck Institute of Biophysics, Max Planck Society;
Institute for Biochemistry, University of Köln, Köln, Germany;
Department of Pediatric Surgery, Hadassah University Hospital, Jerusalem, Israel;

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Ayalon, A. H., Bähr, G., & Hirsch-Ayalon, P. (1979). Precipitation membrane effects in biologic membranes: The role of calcium. Journal of Membrane Biology, 51(1), 7-14. doi:10.1007/BF01869340.


Cite as: https://hdl.handle.net/21.11116/0000-0008-AF98-8
Abstract
Biologic membranes display rectification of electrical current, as well as other properties, in many respects, similar to precipitation membranes. The experiments reported here, performed in frog skin, show that these characteristics are dependent upon the presence of calcium. Upon elimination of calcium from the bathing solution, the property of electrical rectification is lost, the current-voltage relation assuming a linear form. Read-ministration of calcium brings about complete recovery of the rectification pattern. This behavior is analogous to chemical deconditioning of precipitation membranes. Our findings support the assumption that the binding of calcium in biologic membranes produces electrical effects characteristic of precipitation membranes.