"CHEBI:6827"^^ . "MethicillinPTNCI" . "Methicillin"^^ . "A semisynthetic, narrow spectrum beta-lactamase-resistant penicillin antibiotic with bactericidal and beta-lactamase resistant activity. Methicillin binds to specific penicillin-binding proteins (BPBs) on the bacterial cell wall, thereby preventing the cross-linkage of peptidoglycans, which are critical components of the bacterial cell wall. This leads to an interruption of the bacterial cell wall and causes bacterial lysis.NCI" . . . . "C61842"^^ . "C17H20N2O6S"^^ . "Methicillin"^^ . "Pharmacologic Substance"^^ . "C0025643"^^ . "61-32-5"^^ . . . "FDA"^^ . "Methicillin"^^ . "Q91FH1328A"^^ . . "METHICILLINPTFDAQ91FH1328A" .