Toward Understanding the Hofmeister Series. 1. Effects of Sodium Salts of Some Anions on the Molecular Organization of H2O

2004 ◽  
Vol 108 (40) ◽  
pp. 8533-8541 ◽  
Author(s):  
Yoshikata Koga ◽  
Peter Westh ◽  
James V. Davies ◽  
Kumiko Miki ◽  
Keiko Nishikawa ◽  
...  
Keyword(s):  
Molecular Organization ◽  
Hofmeister Series ◽  
Sodium Salts

Effects of the Hofmeister series of sodium salts on the solvent properties of water

2017 ◽  
Vol 19 (7) ◽  
pp. 5254-5261 ◽  
Author(s):  
L. A. Ferreira ◽  
V. N. Uversky ◽  
B. Y. Zaslavsky
Keyword(s):  
Hofmeister Series ◽  
Salt Effects ◽  
Static Polarizability ◽  
Sodium Salts ◽  
Water Solvent ◽  
Structural Entropy ◽  
Solvent Properties

Distances between the signatures of salt effects on water solvent features depend on static polarizability of the anion and water structural entropy.

scholarly journals A study of the relationship between water and anions of the Hofmeister series using pressure perturbation calorimetry

2015 ◽  
Vol 17 (21) ◽  
pp. 14130-14137 ◽  
Author(s):  
Jordan W. Bye ◽  
Robert J. Falconer
Keyword(s):  
Hofmeister Series ◽  
Pressure Perturbation ◽  
Sodium Salts ◽  
Pressure Perturbation Calorimetry ◽  
The Relationship

Pressure perturbation calorimetry (PPC) was used to study the relationship between water and sodium salts with a range of different anions.

The Effects of Chloride Salts of Some Cations on the Molecular Organization of H2O. Towards Understanding the Hofmeister Series. II

2006 ◽  
Vol 79 (9) ◽  
pp. 1347-1354 ◽  
Author(s):  
Yoshikata Koga ◽  
Hideki Katayanagi ◽  
James V. Davies ◽  
Hitoshi Kato ◽  
Keiko Nishikawa ◽  
...  
Keyword(s):  
Molecular Organization ◽  
Hofmeister Series ◽  
Chloride Salts

Influence of the Hofmeister series of anions on the molecular organization of positively ionized monolayers of a viologen derivative

2007 ◽  
Vol 315 (2) ◽  
pp. 588-596 ◽  
Author(s):  
Ignacio Giner ◽  
Gorka Pera ◽  
Carlos Lafuente ◽  
María Carmen López ◽  
Pilar Cea
Keyword(s):  
Molecular Organization ◽  
Hofmeister Series

Bimolecular and Monomolecular Lipid Films: Selected Area Electron Diffraction

1969 ◽  
Vol 27 ◽  
pp. 338-339
Author(s):  
Robert M. Glaeser ◽  
David W. Deamer
Keyword(s):  
Electron Diffraction ◽  
Membrane Structure ◽  
Molecular Organization ◽  
Membrane Material ◽  
X Ray Diffraction ◽  
Membrane Systems ◽  
X Ray ◽  
Selected Area Electron Diffraction ◽  
Lipid Films ◽  
Ultimate Objective

In the investigation of the molecular organization of cell membranes it is often supposed that lipid molecules are arranged in a bimolecular film. X-ray diffraction data obtained in a direction perpendicular to the plane of suitably layered membrane systems have generally been interpreted in accord with such a model of the membrane structure. The present studies were begun in order to determine whether selected area electron diffraction would provide a tool of sufficient sensitivity to permit investigation of the degree of intermolecular order within lipid films. The ultimate objective would then be to apply the method to single fragments of cell membrane material in order to obtain data complementary to the transverse data obtainable by x-ray diffraction.

Evaluation of Freezing Methods by Low Temperature X-Ray Diffraction

1977 ◽  
Vol 35 ◽  
pp. 330-333
Author(s):  
T. Gulik-Krzywicki ◽  
M.J. Costello
Keyword(s):  
Biological Materials ◽  
Molecular Organization ◽  
X Ray Diffraction ◽  
Glass Capillary ◽  
X Ray ◽  
Rate Dependent ◽  
Before And After ◽  
Freeze Etching ◽  
Diffraction Patterns ◽  
Set Up

Freeze-etching electron microscopy is currently one of the best methods for studying molecular organization of biological materials. Its application, however, is still limited by our imprecise knowledge about the perturbations of the original organization which may occur during quenching and fracturing of the samples and during the replication of fractured surfaces. Although it is well known that the preservation of the molecular organization of biological materials is critically dependent on the rate of freezing of the samples, little information is presently available concerning the nature and the extent of freezing-rate dependent perturbations of the original organizations. In order to obtain this information, we have developed a method based on the comparison of x-ray diffraction patterns of samples before and after freezing, prior to fracturing and replication.Our experimental set-up is shown in Fig. 1. The sample to be quenched is placed on its holder which is then mounted on a small metal holder (O) fixed on a glass capillary (p), whose position is controlled by a micromanipulator.

On the structural organization of biological pumps and channels

1984 ◽  
Vol 42 ◽  
pp. 138-141
Author(s):  
G. Zampighi ◽  
M. Kreman
Keyword(s):  
Active Transport ◽  
Transport System ◽  
Plasma Membranes ◽  
Transport Proteins ◽  
Molecular Organization ◽  
Passive Transport ◽  
Concentration Gradients ◽  
Cell Functions ◽  
Natural Concentration ◽  
Active Transport System

The plasma membranes of most animal cells contain transport proteins which function to provide passageways for the transported species across essentially impermeable lipid bilayers. The channel is a passive transport system which allows the movement of ions and low molecular weight molecules along their concentration gradients. The pump is an active transport system and can translocate cations against their natural concentration gradients. The actions and interplay of these two kinds of transport proteins control crucial cell functions such as active transport, excitability and cell communication. In this paper, we will describe and compare several features of the molecular organization of pumps and channels. As an example of an active transport system, we will discuss the structure of the sodium and potassium ion-activated triphosphatase [(Na+ +K+)-ATPase] and as an example of a passive transport system, the communicating channel of gap junctions and lens junctions.

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