Medical term:
lactam
lac·tam
, lactim (lak'tam, lak'tim),Contractions of "lactoneamine" and "lactoneimine," and applied to the tautomeric forms -NH-CO- and -N=C(OH)-, respectively, observed in many purines, pyrimidines, and other substances; the latter form accounts for the acidic properties of uric acid.
Farlex Partner Medical Dictionary © Farlex 2012
lac·tam
, lactim (lak'tam, -tim)Contractions of "lactoneamine" and "lactoneimine," applied to the tautomeric forms -NH-CO- and -N=C(OH)-, respectively, observed in many purines, pyrimidines, and other substances.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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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