NCIt definition : A 1-beta-methyl carbapenem and broad-spectrum beta-lactam antibiotic with bactericidal
property. Ertapenem binds to penicillin binding proteins (PBPs) located on the bacterial
cell wall, in particular PBPs 2 and 3, thereby inhibiting the final transpeptidation
step in the synthesis of peptidoglycan, an essential component of the bacterial cell
wall. Inhibition results in a weakening and subsequent lysis of the cell wall leading
to cell death of Gram-positive and Gram-negative aerobic and anaerobic pathogens.
This agent is stable against hydrolysis by a variety of beta-lactamases, including
penicillinases, cephalosporinases and extended-spectrum beta-lactamases.;