title: The range and significance of variations amongst bacterial penicillinases.
mesh_terms: D000667:Ampicillin; D001407:Bacillus / Q000201:enzymology; D001409:Bacillus cereus / Q000201:enzymology; D002511:Cephalosporins; D003545:Cysteine / Q000032:analysis; D004926:Escherichia coli / Q000201:enzymology; D007527:Isoenzymes; D008712:Methicillin; D008970:Molecular Weight; D010400:Penicillin G; D010405:Penicillinase / Q000032:analysis; D010649:Phenylalanine; D013210:Staphylococcus / Q000201:enzymology
chemical_list: D002511:Cephalosporins; D007527:Isoenzymes; D010649:Phenylalanine; D000667:Ampicillin; D010405:Penicillinase; D003545:Cysteine; D010400:Penicillin G; D008712:Methicillin