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  • Title: Discovery of novel inhibitors of the NorA multidrug transporter of Staphylococcus aureus.
    Author: Brincat JP, Carosati E, Sabatini S, Manfroni G, Fravolini A, Raygada JL, Patel D, Kaatz GW, Cruciani G.
    Journal: J Med Chem; 2011 Jan 13; 54(1):354-65. PubMed ID: 21141825.
    Abstract:
    Four novel inhibitors of the NorA efflux pump of Staphylococcus aureus, discovered through a virtual screening process, are reported. The four compounds belong to different chemical classes and were tested for their in vitro ability to block the efflux of a well-known NorA substrate, as well as for their ability to potentiate the effect of ciprofloxacin (CPX) on several strains of S. aureus, including a NorA overexpressing strain. Additionally, the MIC values of each of the compounds individually are reported. A structure-activity relationship study was also performed on these novel chemotypes, revealing three new compounds that are also potent NorA inhibitors. The virtual screening procedure employed FLAP, a new methodology based on GRID force field descriptors.
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