Biological Activity Monovalent cation ionophore that displays selectivity for K+ and NH4+ (K+ = NH4+ > Na+ > Mg2+ > Li+ >> Ca2+ for nonactin-EVA sensor). Induces cation transport across artificial membranes. Also inhibits P-glycoprotein-mediated efflux of chemotherapeutic agents in multiple-drug resistant cancer cells. Antibiotic.
Soluble to 10 mM in ethanol
Desiccate at -20°C
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