title: Drug ring bust.
mesh_terms: D004926:Escherichia coli / Q000201:enzymology; D008958:Models, Molecular; D010400:Penicillin G / Q000378:metabolism*; D001618:beta-Lactamases / Q000648:ultrastructure*
chemical_list: D001618:beta-Lactamases; D010400:Penicillin G