peptidoglycan peptide-interacting proteins ( ppips ) which include the penicillin-binding proteins ( pbps ) are bacterial enzymes which interact with beta-lactams ( including penicillins and cephalosporins ) and/or acyl-d-ala-d-ala analogues of a non-beta-lactam structure .
C0030842
penicillins
C0282215
beta-lactam