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Literature DB >> 6286001

Selectivity of the Ca2+-activated and light-dependent K+ channels for monovalent cations.

Abstract

The ionic selectivity of the Ca(2+)-activated K(+) channel of Aplysia neurons and of the light-dependent K(+) channel of Pecten photoreceptors to metal and organic cations was studied. The selectivity sequence determined from reversal potential measurements is T1(+) K(+) > Rb(+) > NH(+) (4) > Cs(+) > Na(+), Li(+) and is identical to the sequence determined previously for voltage-dependent K(+) channels in a variety of tissues. Our results suggest that some physical aspect of the K(+) channel is conserved in phyllogenetically different tissues and cells.

Entities: Chemical

Mesh：

Substances：

Year: 1982 PMID： 6286001 PMCID： PMC1328875 DOI： 10.1016/S0006-3495(82)84565-7

Source DB: PubMed Journal: Biophys J ISSN： 0006-3495 Impact factor: 4.033

18 in total

Review 1. Calcium-dependent potassium activation in nervous tissues.

Authors: R W Meech
Journal: Annu Rev Biophys Bioeng Date: 1978

2. Dynamic asymmetries in the squid axon membrane.

Authors: W J Adelman; J P Senft
Journal: J Gen Physiol Date: 1968-05 Impact factor: 4.086

3. Ionic effects on the membrane potential of hyperpolarizing photoreceptors in scallop retina.

Authors: A L Gorman; J S McReynolds
Journal: J Physiol Date: 1978-02 Impact factor: 5.182

4. Ionic channels in excitable membranes. Current problems and biophysical approaches.

Authors: B Hille
Journal: Biophys J Date: 1978-05 Impact factor: 4.033

5. The selectivity of the delayed potassium conductance of frog skeletal muscle fibers.

Authors: L A Gay; P R Stanfield
Journal: Pflugers Arch Date: 1978-12-28 Impact factor: 3.657

6. Serotonin: two different inhibitory actions on snail neurons.

Authors: H M Gerschenfeld
Journal: Science Date: 1971-03-26 Impact factor: 47.728

7. Selectivity of cations and nonelectrolytes for acetylcholine-activated channels in cultured muscle cells.

Authors: L Y Huang; W A Catterall; G Ehrenstein
Journal: J Gen Physiol Date: 1978-04 Impact factor: 4.086

8. Potassium current and the effect of cesium on this current during anomalous rectification of the egg cell membrane of a starfish.

Authors: S Hagiwara; S Miyazaki; N P Rosenthal
Journal: J Gen Physiol Date: 1976-06 Impact factor: 4.086

9. Ionic selectivity of the sodium channel of frog skeletal muscle.

Authors: D T Campbell
Journal: J Gen Physiol Date: 1976-03 Impact factor: 4.086

10. Potassium channels in myelinated nerve. Selective permeability to small cations.

Authors: B Hille
Journal: J Gen Physiol Date: 1973-06 Impact factor: 4.086

21 in total

1. Interaction of the Depolarization-Activated K Channel of Samanea saman with Inorganic Ions: A Patch-Clamp Study.

Authors: N Moran; D Fox; R L Satter
Journal: Plant Physiol Date: 1990-10 Impact factor: 8.340

2. Phencyclidine (PCP), in Nanomolar Concentrations, Binds to Synaptosomes and Blocks Certain Potassium Channels: Covalent Labeling of K Channels with PCP.

Authors: M P Blaustein; R K Ickowicz
Journal: Biophys J Date: 1984-01 Impact factor: 4.033

Review 10. Ionic selectivity revisited: the role of kinetic and equilibrium processes in ion permeation through channels.

Authors: G Eisenman; R Horn
Journal: J Membr Biol Date: 1983 Impact factor: 1.843

Selectivity of the Ca2+-activated and light-dependent K+ channels for monovalent cations.

Review 1. Calcium-dependent potassium activation in nervous tissues.

2. Dynamic asymmetries in the squid axon membrane.

3. Ionic effects on the membrane potential of hyperpolarizing photoreceptors in scallop retina.

4. Ionic channels in excitable membranes. Current problems and biophysical approaches.

5. The selectivity of the delayed potassium conductance of frog skeletal muscle fibers.

6. Serotonin: two different inhibitory actions on snail neurons.

7. Selectivity of cations and nonelectrolytes for acetylcholine-activated channels in cultured muscle cells.

8. Potassium current and the effect of cesium on this current during anomalous rectification of the egg cell membrane of a starfish.

9. Ionic selectivity of the sodium channel of frog skeletal muscle.

10. Potassium channels in myelinated nerve. Selective permeability to small cations.

1. Interaction of the Depolarization-Activated K Channel of Samanea saman with Inorganic Ions: A Patch-Clamp Study.

2. Phencyclidine (PCP), in Nanomolar Concentrations, Binds to Synaptosomes and Blocks Certain Potassium Channels: Covalent Labeling of K Channels with PCP.

3. Ca2+-activated K+ permeability in human erythrocytes: modulation of single-channel events.

4. FMRFamide and membrane stretch as activators of the Aplysia S-channel.

5. Ca(2+)-dependent chloride conductance in Necturus taste cells.

6. Monovalent cation permeabilities of the potassium systems in the crab giant axon.

7. Effects of thallium on membrane currents at diastolic potentials in canine cardiac Purkinje strands.

8. Transient outward currents and changes of their gating properties after cell activation in thrombocytes of the newt.

9. Single nonselective cation channels and Ca2+-activated K+ channels in aortic endothelial cells.

Review 10. Ionic selectivity revisited: the role of kinetic and equilibrium processes in ion permeation through channels.