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Similarity in Effects of Na+ Gradients and Membrane Potentials on D-glucose Transport By, and Phlorizin Binding To, Vesicles Derived from Brush Borders of Rattit Intestinal Mucosal Cells

Overview
Journal J Membr Biol
Date 1978 May 3
PMID 660646
Citations 20
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Abstract

Both the presence of sodium and of an electrical potential difference across the membrane have been found to be necessary in order to achieve optimal D-glucose-protectable phlorizin binding to brush border membranes from rabbit small intestine. The effect of delta approximately muNa on phlorizin binding shows a close similarity to that on D-glucose transport, confirming that phlorizin is indeed bound to the D-glucose transporting protein. Possible modulations of binding by a transmembrane potential are discussed on the basis of some models.

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