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Title: Antibacterial Spectrum of a Tetrazole-Based Reversible Inhibitor of Serine β-Lactamases

Journal Article · · Antimicrobial Agents and Chemotherapy
DOI:https://doi.org/10.1128/AAC.02563-17· OSTI ID:1504986

ABSTRACT CTX-M is the most prevalent family of extended-spectrum β-lactamases. We recently developed a tetrazole-derived noncovalent inhibitor of CTX-M-9. Here, we present the biochemical and microbiological activity of this inhibitor across a representative panel of serine β-lactamases and Gram-negative bacteria. The compound displayed significant activity against all major subgroups of CTX-M, including CTX-M-15, while it exhibited some low-level inhibition of other serine β-lactamases. Complex crystal structures with the CTX-M-14 S237A mutant and CTX-M-27 illustrate the binding contribution of specific active-site residues on the β3 strand.In vitropharmacokinetic studies revealed drug-like properties and positive prospects for further optimization. These studies suggest that tetrazole-based compounds can provide novel chemotypes for future serine β-lactamase inhibitor discovery.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
National Institutes of Health (NIH)
OSTI ID:
1504986
Journal Information:
Antimicrobial Agents and Chemotherapy, Vol. 62, Issue 8; ISSN 0066-4804
Publisher:
American Society for Microbiology
Country of Publication:
United States
Language:
ENGLISH

References (32)

Structure-Based Design of Potent and Ligand-Efficient Inhibitors of CTX-M Class A β-Lactamase journal February 2012
Roles of Residues Cys69, Asn104, Phe160, Gly232, Ser237, and Asp240 in Extended-Spectrum β-Lactamase Toho-1 journal November 2010
CTX-M Enzymes: Origin and Diffusion journal January 2012
iMOSFLM : a new graphical interface for diffraction-image processing with MOSFLM journal March 2011
Extended-Spectrum  -Lactamases in Klebsiella pneumoniae Bloodstream Isolates from Seven Countries: Dominance and Widespread Prevalence of SHV- and CTX-M-Type  -Lactamases journal October 2003
Atomic Resolution Structures of CTX-M β-Lactamases: Extended Spectrum Activities from Increased Mobility and Decreased Stability journal April 2005
Discovery of a Cyclic Boronic Acid β-Lactamase Inhibitor (RPX7009) with Utility vs Class A Serine Carbapenemases journal March 2015
Altering enzymatic activity: recruitment of carboxypeptidase activity into an RTEM beta-lactamase/penicillin-binding protein 5 chimera. journal April 1990
Growing Group of Extended-Spectrum  -Lactamases: the CTX-M Enzymes journal December 2003
Methods for in vitro evaluating antimicrobial activity: A review journal April 2016
Molecular Basis for the Catalytic Specificity of the CTX-M Extended-Spectrum β-Lactamases journal December 2014
Coot model-building tools for molecular graphics journal November 2004
Molecular Basis of Substrate Recognition and Product Release by the Klebsiella pneumoniae Carbapenemase (KPC-2) journal April 2017
Structure, Genetics and Worldwide Spread of New Delhi Metallo-β-lactamase (NDM): a threat to public health journal April 2017
A quick method for the determination of inhibition constants journal September 1982
Molecular docking and ligand specificity in fragment-based inhibitor discovery journal March 2009
PHENIX: a comprehensive Python-based system for macromolecular structure solution journal January 2010
MolProbity: all-atom contacts and structure validation for proteins and nucleic acids journal May 2007
Structural and Functional Aspects of Extended-Spectrum AmpC Cephalosporinases journal May 2016
The spread of CTX-M-type extended-spectrum β-lactamases journal January 2008
Characterizing the Antimicrobial Activity of N 2 , N 4 -Disubstituted Quinazoline-2,4-Diamines toward Multidrug-Resistant Acinetobacter baumannii journal March 2017
Updated Functional Classification of  -Lactamases journal December 2009
electronic Ligand Builder and Optimization Workbench ( eLBOW ): a tool for ligand coordinate and restraint generation journal September 2009
Iterative-build OMIT maps: map improvement by iterative model building and refinement without model bias journal April 2008
Scaling and assessment of data quality journal December 2005
Kinetic Characterization of Hydrolysis of Nitrocefin, Cefoxitin, and Meropenem by β-Lactamase from Mycobacterium tuberculosis journal May 2013
The CCP4 suite programs for protein crystallography journal September 1994
Class D β-Lactamases: Are They All Carbapenemases? journal January 2014
The New β-Lactamases journal January 2005
Effect of D240G substitution in a novel ESBL CTX-M-27 journal June 2003
Ligand-Induced Proton Transfer and Low-Barrier Hydrogen Bond Revealed by X-ray Crystallography journal June 2015
Phaser crystallographic software journal July 2007

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