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PBP4 Mediates β-Lactam Resistance by Altered Function


Penicillin binding protein 4 (PBP4) can provide high-level β-lactam resistance in Staphylococcus aureus A series of missense and promoter mutations associated with pbp4 were detected in strains that displayed high-level resistance. We show here that the missense mutations facilitate the β-lactam resistance mediated by PBP4 and the promoter mutations lead to overexpression of pbp4 Our results also suggest a cooperative interplay among PBPs for β-lactam resistance.

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