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Anti-Mycobacterium abscessus Activity of Tuberculosis F-ATP Synthase Inhibitor GaMF1

New drug targets and molecules with bactericidal activity are needed against the respiratory mycobacterial pathogen Mycobacterium abscessus. Employing a lead repurposing strategy, the antituberculosis compound GaMF1 was tested against M. abscessus. ABSTRACT New drug targets and molecules with bactericidal activity are needed against the respiratory mycobacterial pathogen Mycobacterium abscessus. Employing a lead repurposing strategy, the antituberculosis compound GaMF1 was tested against M. abscessus. Whole-cell and ATP synthesis assays demonstrated that GaMF1 inhibits growth and kills M. abscessus by targeting the F-ATP synthase. GaMF1’s anti-M. abscessus activity increased in combination with clofazimine, rifabutin, or amikacin. The study expands the repertoire of anti-M. abscessus compounds targeting oxidative phosphorylation.