Reaction Kinetics in a Microemulsion Medium IV. Hexacyanoferrate(III)–Iodide Reaction in Water/Aerosol-OT/Heptane Microemulsion and Mixed Solvents

1997 ◽  
Vol 70 (6) ◽  
pp. 1245-1253 ◽  
Author(s):  
Kallol Mukherjee ◽  
Dulal Chandra Mukherjee ◽  
Satya Priya Moulik
Keyword(s):  
Reaction Kinetics ◽  
Mixed Solvents ◽  
Water Aerosol ◽  
Aerosol Ot ◽  
Reaction In Water

Phosphorylation of Ca2+-ATPase by Inorganic Phosphate in Water-Organic Solvent Media: Dielectric Constant and Solvent Hydrophobicity Contribution

1982 ◽  
Vol 37 (5-6) ◽  
pp. 527-531 ◽  
Author(s):  
Angela de Souza Otero ◽  
Leopoldo de Meis
Keyword(s):  
Dielectric Constant ◽  
Organic Solvent ◽  
Inorganic Phosphate ◽  
Mixed Solvents ◽  
Solvent Mixtures ◽  
Pronounced Increase ◽  
Calcium Gradient ◽  
Organic Solvent Media ◽  
Water Solvent ◽  
Reaction In Water

Abstract The effect of organic solvents on the phosphorylation of the Ca2+-dependent ATPase of sarcoplasmic reticulum by inorganic phosphate in the absence of a calcium gradient was investigated. Kinetic analysis of the reaction in water and water-organic solvent media according to a bireactant scheme shows no correlation between changes in kinetic parameters and the dieletric constant of the mixed solvents. The pronounced increase in equilibrium levels of phosphoenzyme in water-solvent mixtures is attributed to changes in the water activity of the medium.

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