Effect of calcium ions on the surface potential near fast potassium channels in the molluscan neuronal somatic membrane

1980 ◽  
Vol 11 (4) ◽  
pp. 273-275
Author(s):  
I. S. Magura ◽  
A. E. Valeev ◽  
I. D. Ponomareva
Keyword(s):  
Potassium Channels ◽  
Surface Potential ◽  
Calcium Ions ◽  
Somatic Membrane

scholarly journals Effect of surface-potential modulators on the opening of lipid pores in liposomal and mitochondrial inner membranes induced by palmitate and calcium ions

2015 ◽  
Vol 1848 (10) ◽  
pp. 2200-2205 ◽  
Author(s):  
Konstantin N. Belosludtsev ◽  
Natalia V. Belosludtseva ◽  
Alexey V. Agafonov ◽  
Nikita V. Penkov ◽  
Victor N. Samartsev ◽  
...  
Keyword(s):  
Surface Potential ◽  
Calcium Ions ◽  
Effect Of Surface

Effect of calcium ions on outward currents in the somatic membrane of mollusk giant neurons

1977 ◽  
Vol 8 (4) ◽  
pp. 306-313
Author(s):  
I. S. Magura ◽  
E. V. Dolgaya ◽  
I. Vadasz
Keyword(s):  
Calcium Ions ◽  
Somatic Membrane ◽  
Outward Currents

scholarly journals Block of Shaker potassium channels by external calcium ions

2002 ◽  
Vol 100 (1) ◽  
pp. 347-351 ◽  
Author(s):  
F. Gomez-Lagunas ◽  
A. Melishchuk ◽  
C. M. Armstrong
Keyword(s):  
Potassium Channels ◽  
Calcium Ions ◽  
Shaker Potassium Channels ◽  
External Calcium

Influence of Calcium Ions on the Plant Cell Surface: Membrane Fusions and Conformational Changes

1974 ◽  
Vol 32 ◽  
pp. 154-155
Author(s):  
D. James Morré ◽  
Charles E. Bracker ◽  
William J. VanDerWoude
Keyword(s):  
Cell Wall ◽  
Cell Surface ◽  
Conformational Changes ◽  
Calcium Ions ◽  
Surface Membrane ◽  
Carboxyl Groups ◽  
Cross Linking ◽  
Ultrastructural Evidence ◽  
Glycine Max L ◽  
Wall Extensibility

Calcium ions in the concentration range 5-100 mM inhibit auxin-induced cell elongation and wall extensibility of plant stems. Inhibition of wall extensibility requires that the tissue be living; growth inhibition cannot be explained on the basis of cross-linking of carboxyl groups of cell wall uronides by calcium ions. In this study, ultrastructural evidence was sought for an interaction of calcium ions with some component other than the wall at the cell surface of soybean (Glycine max (L.) Merr.) hypocotyls.

The effects of surface absorbed monolayer microdiffraction patterns

1988 ◽  
Vol 46 ◽  
pp. 680-681
Author(s):  
M. Pan ◽  
J.M. Cowley
Keyword(s):  
Surface Potential ◽  
Electron Probe ◽  
Potential Distribution ◽  
Crystal Surface ◽  
Normal Direction ◽  
Surface Image ◽  
Extended Surface ◽  
Gas Molecules ◽  
Surface Nature ◽  
Electron Microdiffraction

Electron microdiffraction patterns, obtained when a small electron probe with diameter of 10-15 Å is directed to run parallel to and outside a flat crystal surface, are sensitive to the surface nature of the crystals. Dynamical diffraction calculations have shown that most of the experimental observations for a flat (100) face of a MgO crystal, such as the streaking of the central spot in the surface normal direction and (100)-type forbidden reflections etc., could be explained satisfactorily by assuming a modified image potential field outside the crystal surface. However the origin of this extended surface potential remains uncertain. A theoretical analysis by Howie et al suggests that the surface image potential should have a form different from above-mentioned image potential and also be smaller by several orders of magnitude. Nevertheless the surface potential distribution may in practice be modified in various ways, such as by the adsorption of a monolayer of gas molecules.

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