Mechanisms of fusidic acid resistance

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This research reveals mechanisms of fusidic acid resistance in Staphylococcus aureus, indicating challenges in treatment.

Mutations in elongation factor G (EF-G) lead to fusidic acid resistance but impose a fitness cost for Staphylococcus aureus.
Common resistance via FusB-type proteins protects EF-G from being locked by fusidic acid, facilitating bacterial survival.
Among resistance mechanisms, FusE involves mutations in ribosomal protein uL6, showcasing diversity in antibiotic resistance strategies.
Despite resistance mechanisms, global prevalence of fusidic acid resistance remains low, suggesting its clinical effectiveness endures.

González-López et al. (2025) studied this question.

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