title: The purification and properties of penicillin beta-lactamases mediated by transmissible R factors in Escherichia coli.
mesh_terms: D000667:Ampicillin; D002509:Cephaloridine; D002845:Chromatography; D003023:Cloxacillin; D004586:Electrophoresis; D004926:Escherichia coli / Q000201:enzymology*; D005827:Genetics, Microbial; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D010400:Penicillin G; D010403:Penicillin Resistance; D010404:Penicillin V / Q000031:analogs & derivatives; D010405:Penicillinase / Q000302:isolation & purification; D013696:Temperature; D013997:Time Factors; D014461:Ultracentrifugation; D065093:beta-Lactamase Inhibitors
chemical_list: D065093:beta-Lactamase Inhibitors; D000667:Ampicillin; D010405:Penicillinase; D002509:Cephaloridine; D003023:Cloxacillin; D010400:Penicillin G; D010404:Penicillin V