Medical term:
lactamases
β-lac·ta·mase
(lak'tă-mās),An enzyme produced by many species of bacteria that disrupts the four-membered β-lactam ring of penicillin and cephalosporin groups of antibiotics, destroying their antimicrobial activity. The ability of an organism to produce a β-lactamase may be chromosomal and constitutive or a plasmid-associated acquired property.
Synonym(s): cephalosporinase, lactamase, penicillinase (1)
Farlex Partner Medical Dictionary © Farlex 2012
lactamase
beta lactamase A bacterial enzyme capable of breaking down the beta lactam ring of certain antibiotics, including penicillins, inactivating themMcGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
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