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VacA, the vacuolating cytotoxin secreted by Helicobacter pylori, is believed to be a major causative factor in the development of gastroduodenal ulcers. This toxin causes vacuolation of cultured cells and it has recently been found to form anion-selective channels upon insertion into planar bilayers as well as in the plasmamembrane of HeLa cells. Here, we identify a series of inhibitors of VacA channels...
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