In examining a MRSA strain, researchers find that degraded penicillin is found in the culture medium. What is the most likely mechanism of resistance?

The production of beta-lactamase

Explanation:

Resistance is largely due to plasmid mediation with the most common mechanism being antibiotic hydrolysis. This is mediated by beta-lactamase(β-Lactamase) which converts penicillin to the inactive penicilloic. This conversion is enhanced by the acyl-enzyme intermediate,E-acyl.

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