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Resistance to drugs has emerged in biological systems as diverse as cancer cells undergoing chemotherapy and microbial pathogens undergoing treatment with antimicrobials. This medical problem is escalating and there is an urgent need for the development of new classes of drugs. In the case of pathogenic bacteria, we are rapidly approaching a scenario where there will be no effective antibiotics in...
The ArsAB ATPase confers metalloid resistance in Escherichia coli by pumping toxic anions out of the cells. This transport ATPase shares structural and perhaps mechanism features with ABC transporters. The ArsAB pump is composed of a membrane subunit that has two groups of six transmembrane segments, and the catalytic subunit, the ArsA ATPase. As is the case with many ABC transporters, ArsA has an...
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