Extended-Spectrum Properties of CMY-30, a Val211Gly Mutant of CMY-2 Cephalosporinase

Extended-Spectrum Properties of CMY-30, a Val211Gly Mutant of CMY-2 Cephalosporinase CMY-31 and CMY-36 Cephalosporinases Encoded by ColE1-Like Plasmids Extended-Spectrum Cephalosporinase in Acinetobacter baumannii Roles of Residues Cys69, Asn104, Phe160, Gly232, Ser237, and Asp240 in Extended-Spectrum β-Lactamase Toho-1 Plasmid-Encoded ACC-4, an Extended-Spectrum Cephalosporinase Variant from Escherichia coli Reduced Susceptibility to Cefepime among Escherichia coli Clinical Isolates Producing Novel Variants of CMY-2 β-Lactamase Role of the Ser-287-Asn Replacement in the Hydrolysis Spectrum Extension of AmpC β-Lactamases in Escherichia coli Biochemical Characterization of Metallo-β-Lactamase VIM-11 from a Pseudomonas aeruginosa Clinical Strain New Variant of CTX-M-Type Extended-Spectrum β-Lactamases, CTX-M-71, with a Gly238Cys Substitution in a K lebsiella pneumoniae Isolate from Bulgaria E240V Substitution Increases Catalytic Efficiency toward Ceftazidime in a New Natural TEM-Type Extended-Spectrum β-Lactamase, TEM-149, from Enterobacter aerogenes and Serratia marcescens Clinical Isolates