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- W2025458478 abstract "This contribution describes the discovery and properties of a synthetic, low-molecular weight compound that transports Cl- across bilayer membranes. Such compounds have potential as therapeutics for cystic fibrosis and cancer. The H+/Cl- co-transport activities of acyclic tetrabutylamides 1-6 were compared by using a pH-stat assay with synthetic EYPC liposomes. The ion transport activity of the most active compound, trimer 3, was an order of magnitude greater than that of calix[4]arene tetrabutylamide C1 a macrocycle known to function as a synthetic ion channel. Trimer 3 has an unprecedented function for a synthetic compound, as it induces a stable potential in liposomes experiencing a transmembrane Cl-/SO42- gradient. Data from both pH-stat and 35Cl NMR experiments indicate that 3 co-transports H+/Cl-. Although 3 transports both Cl- and H+ the overall process is not electrically silent. Thus, trimer 3 induces a stable potential in LUVs due to a transmembrane anionic gradient. The ability of trimer 3 to transport Cl-, to maintain a transmembrane potential, along with its high activity at uM concentrations, its low molecular weight, and its simple preparation, make this compound a valuable lead in drug development for diseases caused by Cl- transport malfunction." @default.
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- W2025458478 date "2003-02-13" @default.
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- W2025458478 title "Chloride Transport Across Lipid Bilayers and Transmembrane Potential Induction by an Oligophenoxyacetamide" @default.
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- W2025458478 doi "https://doi.org/10.1021/ja029372t" @default.
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