Vancomycin resistance in Enterococcus species is primarily due to:
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Correct answer: Alteration of D-Ala-D-Ala to D-Ala-D-Lac
Vancomycin resistance occurs when bacteria alter the target site from D-Ala-D-Ala to D-Ala-D-Lac in peptidoglycan precursors. This reduces vancomycin binding affinity.
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More Drug Resistance Mechanisms questions
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- Extended-spectrum beta-lactamases (ESBLs) confer resistance to:
- Methicillin-resistant Staphylococcus aureus (MRSA) is resistant due to:
- Which mechanism reduces antibiotic entry into Gram-negative bacteria?
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