Contribution of enzymatic properties, cell permeability, and enzyme expression to microbiological activities of beta-lactams in three Bacteroides fragilis isolates that harbor a metallo-beta-lactamase gene

Cleavage of Structural Proteins during the Assembly of the Head of Bacteriophage T4

1970 • 253,849 citations

Molecular Cloning: A Laboratory Manual

2001 • 133,517 citations

The structure of β-lactamases

1980 • 1,705 citations

Vectors for selective expression of cloned DNAs by T7 RNA polymerase

1987 • 1,449 citations

Classification of beta-lactamases: groups 2c, 2d, 2e, 3, and 4

1989 • 176 citations

Cloning and sequencing of the class B beta-lactamase gene (ccrA) from Bacteroides fragilis TAL3636

1990 • 173 citations

Beta-lactamase-mediated imipenem resistance in Bacteroides fragilis

1986 • 169 citations

Sequencing the gene for an imipenem-cefoxitin-hydrolyzing enzyme (CfiA) from Bacteroides fragilis TAL2480 reveals strong similarity between CfiA and Bacillus cereus beta-lactamase II

1990 • 164 citations

Susceptibility of Anaerobes to Cefoxitin and Other Cephalosporins

1975 • 133 citations

Cloning and sequencing of the metallothioprotein beta-lactamase II gene of Bacillus cereus 569/H in Escherichia coli

1985 • 110 citations

Antimicrobial Resistance in Bacteroides

1993 • 101 citations

Biochemical characterization of the metallo-beta-lactamase CcrA from Bacteroides fragilis TAL3636

1992 • 88 citations

Cloning, nucleotide sequence, and expression of the Bacillus cereus 5/B/6 beta-lactamase II structural gene

1988 • 85 citations

A silent carbapenemase gene in strains of Bacteroides fragilis can be expressed after a one-step mutation

1992 • 81 citations

Conjugal transfer of imipenem resistance in Bacteroides fragilis.

1992 • 76 citations

Biochemical characteristics of extended broad spectrum β-lactamases

1989 • 51 citations

The amino acid sequence of the zinc‐requiring β‐lactamase II from the bacterium Bacillus cereus 569

1985 • 37 citations

Escherichia coli chromosomal mutations that permit direct cloning of the Bacteroides fragiiis metallo‐β‐lactamase gene, ccrA

1991 • 37 citations

Production of a variant of β-lactamase II with selectively decreased cephalosporinase activity by a mutant of Bacillus cereus 569/H/9

1980 • 26 citations

Mutations affecting the catalytic activity of Bacillus cereus 5/B/6 β-lactamase II

1989 • 16 citations