Use of Novel Boronic Acid Transition State Inhibitors To Probe Substrate Affinity in SHV-Type Extended-Spectrum β-Lactamases
Author(s) -
Jodi M. Thomson,
Fabio Prati,
Christopher R. Bethel,
Robert A. Bonomo
Publication year - 2007
Publication title -
antimicrobial agents and chemotherapy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.07
H-Index - 259
eISSN - 1070-6283
pISSN - 0066-4804
DOI - 10.1128/aac.01293-06
Subject(s) - cefotaxime , ceftazidime , boronic acid , antibiotics , beta lactamase inhibitors , broad spectrum , chemistry , antibacterial agent , microbiology and biotechnology , stereochemistry , biology , biochemistry , bacteria , combinatorial chemistry , pseudomonas aeruginosa , genetics
Boronic acid transition state inhibitors (BATSIs) with R1 side chains of cefotaxime and ceftazidime were assayed against SHV-1, SHV-2, SHV-5, D104K, and D104K G238S beta-lactamases. The D104K variant was the most susceptible to inhibition by the ceftazidime BATSI (Ki, 730+/-80 nM), while the D104K G238S variant was the most susceptible to the cefotaxime BATSI (Ki, 1.1+/-0.2 microM).
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