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Literature DB >> 4943653

Biological ion exchanger resins. II. QUERP water and ion exchange selectivity.

Abstract

Biological selectivity is shown to vary with medium osmotic strength and temperature. Selectivity reversals occur at 4 degrees C and at an external osmolality of 0.800 indicating that intracellular hydration and endosolvent (intracellular water) structure are important determinants in selectivity. Magnetic resonance measurements of line width by steady-state nuclear magnetic resonance (NMR) indicate a difference in the intracellular water signal of 16 Hz between the K form and Na form of Escherichia coli, providing additional evidence that changes in the ionic composition of cells are accompanied by changes in endosolvent structure. The changes were found to be consistent with the thermodynamic and magnetic resonance properties of aqueous electrolyte solutions. Calculation of the dependence of ion-pairing forces on medium dielectric reinforces the role of endosolvent structure in determining ion exchange selectivity.

Entities: Chemical Species

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Year: 1971 PMID： 4943653 PMCID： PMC1484048 DOI： 10.1016/S0006-3495(71)86252-5

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

7 in total

9 in total

4. Actin-like properties from Escherichia coli: concept of cytotonus as the missing link between cell metabolism and the biological ion-exchange resin.

Authors: L Minkoff; R Damadian
Journal: J Bacteriol Date: 1976-01 Impact factor: 3.490

5. Biological ion exchanger resins. 3. Molecular interpretation of cellular ion exchange.

Authors: R Damadian
Journal: Biophys J Date: 1971-09 Impact factor: 4.033

6. Biological ion exchanger resins. I. Quantitative electrostatic correspondence of fixed charge and mobile counter ion.

Authors: R Damadian
Journal: Biophys J Date: 1971-09 Impact factor: 4.033

7. Pyrophosphate synthesis from phospho(enol)pyruvate catalyzed by precipitated magnesium phosphate with "enzyme-like" activity.

Authors: M Hermes-Lima; A Vieyra
Journal: J Mol Evol Date: 1992-10 Impact factor: 2.395

8. Electric conductivity and internal osmolality of intact bacterial cells.

Authors: R E Marquis; E L Carstensen
Journal: J Bacteriol Date: 1973-03 Impact factor: 3.490

9. Isolation and characterization of the amino-acid pools located within the cytoplasm and vacuoles of Candida utilis.

Authors: A Wiemken; P Nurse
Journal: Planta Date: 1973-12 Impact factor: 4.116

9 in total

Biological ion exchanger resins. II. QUERP water and ion exchange selectivity.

1. A relationship between multiple temperature optima for biological systems and the properties of water.

2. Thermodynamic properties of ion exchange resins; free energy of swelling as related to ion selectivities.

3. Growth and Fermentation of Bacteria Near Their Minimum Temperature.

4. Evidence for the existence of a minimum of two phases of ordered water in skeletal muscle.

5. Ion metabolism in a potassium accumulation mutant of Escherichia coli B. I. Potassium metabolism.

6. Biological ion exchanger resins. I. Quantitative electrostatic correspondence of fixed charge and mobile counter ion.

7. Nuclear magnetic resonance evidence using D2O for structured water in muscle and brain.

1. A cooperative transition theory applied to the kinetics of ionic exchanges in cells.

2. Caloric catastrophe.

3. Nuclear magnetic resonance transverse relaxation times of water protons in skeletal muscle.

4. Actin-like properties from Escherichia coli: concept of cytotonus as the missing link between cell metabolism and the biological ion-exchange resin.

5. Biological ion exchanger resins. 3. Molecular interpretation of cellular ion exchange.

6. Biological ion exchanger resins. I. Quantitative electrostatic correspondence of fixed charge and mobile counter ion.

7. Pyrophosphate synthesis from phospho(enol)pyruvate catalyzed by precipitated magnesium phosphate with "enzyme-like" activity.

8. Electric conductivity and internal osmolality of intact bacterial cells.

9. Isolation and characterization of the amino-acid pools located within the cytoplasm and vacuoles of Candida utilis.