title: A bla(TEM-1b)-derived TEM-6 beta-lactamase: a case of convergent evolution.
authors.forename: L V
authors.initials: LV
authors.lastname: Peixe
authors.forename: J C
authors.initials: JC
authors.lastname: Sousa
authors.forename: J C
authors.initials: JC
authors.lastname: Perez-Diaz
authors.forename: F
authors.initials: F
authors.lastname: Baquero
mesh_terms: D018550:Cephalosporin Resistance / Q000235:genetics; D004926:Escherichia coli / Q000201:enzymology* / Q000235:genetics; D006801:Humans; D009154:Mutation; D010957:Plasmids / Q000235:genetics; D017421:Sequence Analysis; D001618:beta-Lactamases / Q000235:genetics*
chemical_list: D001618:beta-Lactamases