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The complexed structure and antimicrobial activity of a non‐β‐lactam inhibitor of AmpC β‐lactamase
β‐Lactamases are the major resistance mechanism to β‐lactam antibiotics and pose a growing threat to public health. Recently, bacteria have become resistant to β‐lactamase inhibitors, making thisExpand
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Structures of the class D carbapenemase OXA-24 from Acinetobacter baumannii in complex with doripenem.
The emergence of class D β-lactamases with carbapenemase activity presents an enormous challenge to health practitioners, particularly with regard to the treatment of infections caused byExpand
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Structure-based approach for binding site identification on AmpC beta-lactamase.
Beta-lactamases are the most widespread resistance mechanism to beta-lactam antibiotics and are an increasing menace to public health. Several beta-lactamase structures have been determined, makingExpand
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Structures of the Class D Carbapenemases OXA-23 and OXA-146: Mechanistic Basis of Activity against Carbapenems, Extended-Spectrum Cephalosporins, and Aztreonam
ABSTRACT Class D β-lactamases that hydrolyze carbapenems such as imipenem and doripenem are a recognized danger to the efficacy of these “last-resort” β-lactam antibiotics. Like all known class DExpand
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Multiple substitutions lead to increased loop flexibility and expanded specificity in Acinetobacter baumannii carbapenemase OXA-239.
OXA-239 is a class D carbapenemase isolated from an Acinetobacter baumannii strain found in Mexico. This enzyme is a variant of OXA-23 with three amino acid substitutions in or near the active site.Expand
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Structure-Based Discovery of a Novel, Noncovalent Inhibitor of AmpC β-Lactamase
beta-lactamases are the most widespread resistance mechanisms to beta-lactam antibiotics, and there is a pressing need for novel, non-beta-lactam drugs. A database of over 200,000 compounds wasExpand
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Structures of ceftazidime and its transition-state analogue in complex with AmpC beta-lactamase: implications for resistance mutations and inhibitor design.
Third-generation cephalosporins are widely used beta-lactam antibiotics that resist hydrolysis by beta-lactamases. Recently, mutant beta-lactamases that rapidly inactivate these drugs have emerged.Expand
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The 1.4 A crystal structure of the class D beta-lactamase OXA-1 complexed with doripenem.
The clinical efficacy of carbapenem antibiotics depends on their resistance to the hydrolytic action of beta-lactamase enzymes. The structure of the class D beta-lactamase OXA-1 as an acyl complexExpand
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Biochemical and Structural Analysis of Inhibitors Targeting the ADC-7 Cephalosporinase of Acinetobacter baumannii
β-Lactam resistance in Acinetobacter baumannii presents one of the greatest challenges to contemporary antimicrobial chemotherapy. Much of this resistance to cephalosporins derives from theExpand
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Structural basis of activity against aztreonam and extended spectrum cephalosporins for two carbapenem-hydrolyzing class D β-lactamases from Acinetobacter baumannii.
The carbapenem-hydrolyzing class D β-lactamases OXA-23 and OXA-24/40 have emerged worldwide as causative agents for β-lactam antibiotic resistance in Acinetobacter species. Many variants of theseExpand
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