𝔖 Bobbio Scriptorium
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Alkalikationen-Spezifität und Träger-Eigenschaften der Antibiotica Nigericin und Monensin

✍ Scribed by W. K. Lutz; H.-K. Wipf; W. Simon


Publisher
John Wiley and Sons
Year
1970
Tongue
German
Weight
358 KB
Volume
53
Category
Article
ISSN
0018-019X

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✦ Synopsis


Abstract

It is shown by means of IR. spectroscopic methods that nigericin and monensin have a cyclic conformation similar to that of their silver salts. Complex formation constants with sodium and potassium ions follow the selectivity order determined by EMF. measurements on liquid membranes: nigericin: K^+^ > Rb^+^ > Na^+^ > Cs^+^ > Li^+^; monensin: Na^+^ > K^+^ > Li^+^ > Rb^+^ > Cs^+^. Transport experiments show that nigericin and monensin facilitate the diffusion of potassiumions across model membranes, although in electrolytic transport experiments the permeability is not affected.


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