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We report a case of endocarditis and pericarditis caused by catalase-negative Staphylococcus aureus. Molecular characterization revealed a novel nonsense mutation in the katA gene, leading to a loss of 238 amino acids (47% of the wild-type catalase protein), including the heme-binding site, NADPH-binding region, and Tyr-337, essential for catalysis.

journal of clinical microbiology

Molecular Characterization of a Catalase-Negative Staphylococcus aureus subsp. <i>aureus</i> Strain Collected from a Patient with Mitral Valve Endocarditis and Pericarditis Revealed a Novel Nonsense Mutation in the <i>katA</i> Gene

Molecular Characterization of a Catalase-Negative Staphylococcus aureus subsp. aureus Strain Collected from a Patient with Mitral Valve Endocarditis and Pericarditis Revealed a Novel Nonsense Mutation in the katA Gene