Document Detail


The mechanism for the exclusion of sugars from the water in a model of the liveing cell: the ion-exchange resin: pore size or water structure?
MedLine Citation:
PMID:  1197383     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The equilibrium distribution coefficients (p-value) of D-arabinose between the water in sulfonate ion-exchange resin and the external aqueous solution vary with the nature of the five alkali metal counterions studied. The strongest exclusion (lowest p-value) is found in the Li+ resin and the least exclusion (highest p-value) in the Cs+ resin. The p-value decreases with the increasing atomic weights for the alkali-metal ions: pCs+ greater than or equal to pRb+ greater than or equal to pRb+ greater than or equal to pK+ greater than pNa+ greater than pLi+. The water contents of these resins, on the other hand, vary in the opposite direction, being highest for the Li+ resin and lowest for the Cs+ resin. These data disprove the pore size theory but fully substantiate the predictions of the association-induction hypothesis.
Authors:
G N Ling; A M Sobel
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Physiological chemistry and physics     Volume:  7     ISSN:  0031-9325     ISO Abbreviation:  Physiol. Chem. Phys.     Publication Date:  1975  
Date Detail:
Created Date:  1976-02-26     Completed Date:  1976-02-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0202364     Medline TA:  Physiol Chem Phys     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  415-21     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Arabinose*
Binding Sites
Binding, Competitive
Biological Transport
Cation Exchange Resins*
Cations, Monovalent
Cesium
Ion Exchange Resins*
Kinetics
Lithium
Models, Biological
Water
Chemical
Reg. No./Substance:
0/Cation Exchange Resins; 0/Cations, Monovalent; 0/Ion Exchange Resins; 147-81-9/Arabinose; 7439-93-2/Lithium; 7440-46-2/Cesium; 7732-18-5/Water

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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