the interaction of type i beta-lactamases with diverse beta-lactam compounds representing cephalosporins , cephamycins , penicillins , penams , penems , carbapenems , monobactams , and clavams was examined by using various enterobacteriaceae and pseudomonas aeruginosa as sources of the enzymes .
C0282215
beta-lactam
C0006968
carbapenems