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[[Penicillin]]s have a common beta-[[lactam]] base structure, as shown, where R represents different chemical groups. ...ins, and some other antibiotics are due to the presence of a [[lactam|beta-lactam]], which binds irreversibly, via acylation, to penicillin-binding proteins,

...ectrum [[antibiotic]] of the [[carbepenem]] class, which contains a [[beta-lactam]] ring structure but is not considered a member of the [[penicillin]] or [[

* [[Lactam]]s: [[Lactam#Synthesis|preparation]] - [[Lactam#Reactions|reactions]]

The first clinically useful antibiotic, [[penicillin]], of the [[beta-lactam]] class, tended to attack only [[Gram-positive bacteria]].

...mmon multidrug-resistant forms, non-penicillin, non-cephalosporin beta lactam antibiotics of the [[carbapenem]] group, [[imipenem]] and [[meropenem]]. C

{{r|Lactam}}

...of action for quinolones is different from that of [[macrolide]]s, beta-[[lactam]]s, [[aminoglycoside]]s, or [[tetracycline]]s, so organisisms resistant to

...hat about 75% of cases are due to [[Streptococcus pyogenes]] and that beta-lactam antibiotics ineffective against MRSA are effective for cellulitis.<ref name ...damycin alone (A-II) or TMP-SMX or a tetracycline in combination with a β-lactam (eg, amoxicillin) (A-II) or linezolid alone (A-II)."<ref name="pmid2121717

Organisms that produce the enzyme are resistant to virtually all beta-lactam antibiotics except aztreonam. <ref>{{citation

* First, for patients who report reactions to beta-lactam antibioics, give skin tests and do not challenge patients with positive ski

...poulos, G., & Falagas, M. E. (2008). Fluoroquinolones compared with {beta}-lactam antibiotics for the treatment of acute bacterial sinusitis: a meta-analysis

Antibiotics used to treat Serratia infection include beta-lactam agents, aminoglycosides and fluoroquinolones and a variety of different res

...ological niche (mammalian skin). ''M. luteus'' is very sensitive to [[beta-lactam antibiotic]]s, and this may reflect the presence of a reduced set of [[peni

*[[antibiotics|β-lactam antibiotics]] alteration of agonist receptors

..., [[penicillin beta-lactamase]], which breaks a chemical bond in the key [[lactam]] structure of [[penicillin]] molecules.

...eliberate combination. For example, several drugs contain an active [[beta-lactam]] antibiotic (e.g., [[ampicillin]]) with another chemical (e.g., [[clavulan

...al, in an article that deals with their pharmacology, to mention that beta-lactam family antibiotics interfere with the synthesis of peptides in the cell wal