Effect of Divalent Cations on Potassium Conductance of Squid Axons: Determination of Surface Charge
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Potassium conductance-voltage curves have been determined for a squid axon in high external potassium solution for a wide range of divalent cation concentrations, and the best value for charge density was found to be one electronic charge per 120 square angstroms, and a lower limit to be two electronic charges per 280 squareAngstroms.About:
This article is published in Biophysical Journal.The article was published on 1969-03-01 and is currently open access. It has received 281 citations till now. The article focuses on the topics: Divalent & Surface charge.read more
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Book ChapterDOI
Electrostatic Potentials at Membrane-Solution Interfaces
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Influence of the Testa on Seed Dormancy, Germination, and Longevity in Arabidopsis
TL;DR: Both structural and pigmentation mutants deteriorated faster than the wild types during natural aging at room temperature, with structural mutants being the most strongly affected.
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The Permeability of the Sodium Channel to Organic Cations in Myelinated Nerve
TL;DR: The relative permeability of sodium channels to 21 organic cations was studied in myelinated nerve fibers and it was found that methyl and methylene groups render cations impermeant.
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Divalent ions and the surface potential of charged phospholipid membranes.
TL;DR: It is suggested that the ability of the alkaline earth cations to shift the conductance-voltage curves of a nerve along the voltage axis by 20–26 mv for a 10-fold increase in concentration may be due to essentially a screening rather than a binding phenomenon.
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Negative surface charge near sodium channels of nerve: divalent ions, monovalent ions, and pH.
TL;DR: Evidence is given for a high density of negative surface charge near the sodium channel of myelinated nerve fibres, and the voltage dependence of peak sodium permeability is measured in a voltage clamp.
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Related Papers (5)
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