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Literature DB >> 11526848

Surface density of calcium ions and calcium spikes in the barnacle muscle fiber membrane.

Abstract

The effects of various divalent cations in the external solution upon the Ca spike of the barnacle muscle fiber membrane were studied using intracellular recording and polarizing techniques. Analysis of the maximum rate of rise of the spike potential indicates that different species of divalent cations bind the same membrane sites competitively with different dissociation constants. The overshoot of the spike potential is determined by the density of Ca (Sr) ions in the membrane sites while the threshold membrane potential for spike initiation depends on the total density of divalent cations. The order of binding among different divalent and trivalent cations is the following: La+++, UO2++ > Zn++, Co++, Fe++ > Mn++ > Ni++ > Ca++ > Mg++, Sr++.

Entities: Chemical

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Year: 1967 PMID： 11526848 PMCID： PMC2225678 DOI： 10.1085/jgp.50.3.583

Source DB: PubMed Journal: J Gen Physiol ISSN： 0022-1295 Impact factor: 4.086

11 in total

6. Calcium-binding of synaptosomes isolated from rat brain cortex, III. Binding with some divalent heavy metal ions and calcium-binding sites.

Authors: K Kamino; K Inouye; M Ogawa; N Uyesaka; A Inouye
Journal: J Membr Biol Date: 1975-08-11 Impact factor: 1.843

7. Sodium and calcium components of the action potential in a developing skeletal muscle cell line.

Authors: Y Kidokoro
Journal: J Physiol Date: 1975-01 Impact factor: 5.182

8. Effects of manganese and other agents on the calcium uptake that follows depolarization of squid axons.

Authors: P F Baker; H Meves; E B Ridgway
Journal: J Physiol Date: 1973-06 Impact factor: 5.182

9. Contribution of calcium and potassium permeability changes to the off response of scallop hyperpolarizing photoreceptors.

Authors: M C Cornwall; A L Gorman
Journal: J Physiol Date: 1979-06 Impact factor: 5.182

10. Zinc-dependent action potentials in giant neurons of the snail, Euhadra quaestia.

Authors: K Kawa
Journal: J Membr Biol Date: 1979-09-14 Impact factor: 1.843

Surface density of calcium ions and calcium spikes in the barnacle muscle fiber membrane.

1. MEMBRANE PROPERTIES OF BARNACLE MUSCLE FIBER.

2. The effect of calcium and magnesium on the spontaneous release of transmitter from mammalian motor nerve endings.

3. The end-plate potential in mammalian muscle.

4. The effect of calcium ions on the motor end-plate potentials.

5. Calcium dependence of spontaneous acetylcholine release at mammalian motor nerve terminals.

6. Studies on the ionic permeability of muscle cells and their models.

7. Release of acetylcholine from a nerve terminal by electric pulses of variable strength and duration.

8. Effects of the intracellular Ca ion concentration upon the excitability of the muscle fiber membrane of a barnacle.

9. Differences in Na and Ca spikes as examined by application of tetrodotoxin, procaine, and manganese ions.

10. THE INITIATION OF SPIKE POTENTIAL IN BARNACLE MUSCLE FIBERS UNDER LOW INTRACELLULAR CA++.

1. Direct measurement of single-channel Ca(2+) currents in bullfrog hair cells reveals two distinct channel subtypes.

2. Localization of calcium binding sites associated with the calcium spike in barnacle muscle.

3. Manganese action potentials in mammalian cardiac muscle.

4. Potassium rectifications of the starfish oocyte membrane and their changes during oocyte maturation.

5. Action potential and non-linear current-voltage relation in starfish oocytes.

6. Calcium-binding of synaptosomes isolated from rat brain cortex, III. Binding with some divalent heavy metal ions and calcium-binding sites.

7. Sodium and calcium components of the action potential in a developing skeletal muscle cell line.

8. Effects of manganese and other agents on the calcium uptake that follows depolarization of squid axons.

9. Contribution of calcium and potassium permeability changes to the off response of scallop hyperpolarizing photoreceptors.

10. Zinc-dependent action potentials in giant neurons of the snail, Euhadra quaestia.