H+/glycyl-glycine cotransport in eel intestinal brush border membrane vesicles: studies with the pH-sensitive dye acridine orange

Monitoring the fluorescence quenching of the pH-sensitive dye Acridine orange, proton accumulation in the presence of an inside-negative transmembrane potential was measured in eel (Anguilla anguilla) intestinal brush-border membrane vesicles. It was demonstrated that the proton accumulation was spe...

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Bibliographic Details
Published in:Biochimica et Biophysica Acta (BBA) - Biomembranes
Main Authors: VERRI, Tiziano, MAFFIA, Michele, STORELLI, Carlo
Other Authors: Verri, Tiziano, Maffia, Michele, Storelli, Carlo
Format: Article in Journal/Newspaper
Language:English
Published: 1992
Subjects:
Online Access:http://hdl.handle.net/11587/108598
https://doi.org/10.1016/0005-2736(92)90303-4
http://www.sciencedirect.com/science/article/pii/0005273692903034
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Summary:Monitoring the fluorescence quenching of the pH-sensitive dye Acridine orange, proton accumulation in the presence of an inside-negative transmembrane potential was measured in eel (Anguilla anguilla) intestinal brush-border membrane vesicles. It was demonstrated that the proton accumulation was specifically increased by the presence of the dipeptide glycyl-glycine in the extravesicular space, showing saturation kinetics at increasing dipeptide concentrations and was specifically inhibited by diethylpyrocarbonate. Data reported sugge