Results 1 to 10 of about 1,053,591 (371)

Exploiting the aggregation propensity of beta-lactamases to design inhibitors that induce enzyme misfolding [PDF]

open access: yesNature Communications, 2023
There is an arms race between beta-lactam antibiotics development and co-evolving beta-lactamases, which provide resistance by breaking down beta-lactam rings.
Ladan Khodaparast   +13 more
doaj   +2 more sources

An Extended Reservoir of Class-D Beta-Lactamases in Non-Clinical Bacterial Strains [PDF]

open access: yesMicrobiology Spectrum, 2022
Bacterial genes coding for antibiotic resistance represent a major issue in the fight against bacterial pathogens. Among those, genes encoding beta-lactamases target penicillin and related compounds such as carbapenems, which are critical for human ...
Valérian Lupo   +6 more
doaj   +2 more sources

Extended-Spectrum Beta-Lactamases [PDF]

open access: yesCanadian Journal of Infectious Diseases and Medical Microbiology, 2006
The definition of extended-spectrum beta-lactamases (ESBLs) has expanded rapidly, in terms of both the number and the variety of enzymes. Bacteria bearing plasmidic ESBLs are spreading widely throughout the world.
Kevin R Forward
doaj   +2 more sources

Prevalence of extended-spectrum beta-lactamases, AmpC beta-lactamase, and metallo-beta-lactamase producing Pseudomonas aeruginosa and Acinetobacter baumannii in an intensive care unit in a tertiary care hospital

open access: yesJournal of the Scientific Society, 2013
Background: Resistance to broad-spectrum beta-lactams, mediated by extended-spectrum beta-lactamases (ESBL), AmpC beta-lactamase, and metallo-beta-lactamase (MBL) enzymes, is an increasing problem worldwide. Aim of the study: This study was undertaken to
Varun Goel   +2 more
doaj   +2 more sources

Extended-spectrum beta-lactamases [PDF]

open access: yesAntimicrobial Agents and Chemotherapy, 1989
A, Philippon, R, Labia, G, Jacoby
openaire   +3 more sources

More extended-spectrum beta-lactamases [PDF]

open access: yesAntimicrobial Agents and Chemotherapy, 1991
G A, Jacoby, A A, Medeiros
openaire   +3 more sources

Beta-lactamases from Yersinia enterocolitica.

open access: yesJournal of general microbiology, 1975
Two beta-lactamases, A and B, have been shown to be present in a strain of Yersinia enterocolitica (w222). Beta-Lactamase A hydrolyses a variety of penicillins and cephalosporins. This enzyme is sensitive to thiol reagents, is only partially inhibited by 0-1 mM-cloxacillin and has a molecular weight of approximatley 20,000.beta-Lactamase B shows strong
Cornelis, G., Abraham, E. P.
openaire   +4 more sources

Antimicrobial resistance of gram-negative pathogens isolated from hospitalized patients in Rostov region [PDF]

open access: yesКлиническая микробиология и антимикробная химиотерапия, 2020
Objective. To evaluate resistance rates to carbapenems and III–IV generation cephalosporins among gramnegative bacteria, including production of carbapenemases and extended-spectrum beta-lactamases (ESBL). Materials and Methods.
Kutsevalova O.Yu.   +4 more
doaj   +1 more source

Biochemical Characterization of QPX7728, a New Ultrabroad-Spectrum Beta-Lactamase Inhibitor of Serine and Metallo-Beta-Lactamases

open access: yesAntimicrobial Agents and Chemotherapy, 2020
QPX7728 is a new ultrabroad-spectrum inhibitor of serine and metallo-beta-lactamases (MBLs) from a class of cyclic boronates that gave rise to vaborbactam.
Ruslan Tsivkovski   +2 more
semanticscholar   +1 more source

Discovery of Cyclic Boronic Acid QPX7728, an Ultra-broad-spectrum Inhibitor of Serine and Metallo Beta-lactamases.

open access: yesJournal of Medicinal Chemistry, 2020
Despite major advances in the beta-lactamase inhibitor field, certain enzymes remain refractory to inhibition by agents recently introduced. Most important among these are the Class B (metallo) enzyme NDM-1 of Enterobacteriaceae and the Class D (OXA ...
S. Hecker   +16 more
semanticscholar   +1 more source

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