Bind PBPs (transpeptidases). Block PBP cross-linking of PG. Activate autolytic enzymes
Penicillin G and V
Beta-lactam drugs that inhibit cell wall synthesis, but are less susceptible to penicillinases. Bactericidal
Cephalosporins
A monobactam; resistant to beta-lactamases. Prevents peptidoglycan cross-linkign by bind to PBP 3. Synergistic with aminoglycosides. No cross-allergenicity with PCNs.
Aztreonam
Broad-spectrumm, beta-lactamase-resistant carbapenem. Always administered with cilastin (inhibitor of renal dyhydropeptidase I) to decrease inactivation of drug in renal tubules.
Imipenem (carbapenem)
Inhibits cell wall peptidoglycan formation by bind D-ala-D-ala portion of cell wall precursors. bactericidal.
Vanco