NCIt definition : The potassium salt of carbenicillin, a broad-spectrum, semisynthetic penicillin derivative
with antibacterial activity. Carbenicillin binds to and inactivates penicillin-binding
proteins (PBPs) located on the inner membrane of the bacterial cell wall, thereby
preventing the cross-linkage of peptidoglycans, which are critical components of the
bacterial cell wall. This leads to a weakening of the bacterial cell wall, eventually
causing bacterial cell lysis.;