A rapid microtiter plate assay for measuring the effect of compounds on Staphylococcus aureus membrane potential.

J Microbiol Methods

Antibacterial Discovery Performance Unit, Infectious Diseases Center of Excellence in Drug Discovery, GlaxoSmithKline Pharmaceuticals, Collegeville, PA 19426, United States.

Published: November 2010

We developed a homogenous microtiter based assay using the cationic dye 3, 3'-Diethyloxacarbocyanine iodide, DiOC2(3), to measure the effect of compounds on membrane potential in Staphylococcus aureus. In a screen of 372 compounds from a synthetic compound collection with anti-Escherichia coli activity due to unknown modes of action at least 17% demonstrated potent membrane activity, enabling rapid discrimination of nuisance compounds.

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http://dx.doi.org/10.1016/j.mimet.2010.08.012DOI Listing

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