Results 41 to 50 of about 38,912 (254)

Antimicrobial Activity of the Quinoline Derivative HT61 against Staphylococcus aureus Biofilms. [PDF]

open access: yes, 2020
Staphylococcus aureus biofilms are a significant problem in health care settings, partly due to the presence of a nondividing, antibiotic-tolerant subpopulation. Here we evaluated treatment of S.
Allan, RN   +7 more
core   +2 more sources

DNA binding and antigenic specifications of DNA gyrase [PDF]

open access: yesNucleic Acids Research, 1984
Complexes of DNA gyrase and minichromosomal DNA containing the origin of replication of Escherichia coli (oriC) can be formed without metabolic energy and visualised by electron microscopy. The A subunit, part of the A2B2-DNA gyrase complex is the binding protein. Various binding sites are scattered around the minichromosomal DNA including oriC.
H, Lother, R, Lurz, E, Orr
openaire   +2 more sources

Molecular details of quinolone–DNA interactions: solution structure of an unusually stable DNA duplex with covalently linked nalidixic acid residues and non-covalent complexes derived from it [PDF]

open access: yes, 2005
Quinolones are antibacterial drugs that are thought to bind preferentially to disturbed regions of DNA. They do not fall into the classical categories of intercalators, groove binders or electrostatic binders to the backbone.
Altman   +50 more
core   +2 more sources

Cryo-EM structure of the complete E. coli DNA gyrase nucleoprotein complex

open access: yesNature Communications, 2019
Bacterial DNA gyrase is the only type II DNA topoisomerase capable of introducing negative supercoils into DNA and is of interest as a drug target. Here the authors present the cryo-EM structure of the complete E. coli DNA gyrase bound to a 180 bp double-
Arnaud Vanden Broeck   +3 more
doaj   +1 more source

Allicin, a natural antimicrobial defence substance from garlic, inhibits DNA gyrase activity in bacteria

open access: yesInternational Journal of Medical Microbiology, 2020
Allicin (diallylthiosulfinate) is a potent antimicrobial substance, produced by garlic tissues upon wounding as a defence against pathogens and pests.
Jana Reiter   +4 more
doaj   +1 more source

Fluoroquinolone Efficacy against Tuberculosis Is Driven by Penetration into Lesions and Activity against Resident Bacterial Populations. [PDF]

open access: yes, 2019
Fluoroquinolones represent the pillar of multidrug-resistant tuberculosis (MDR-TB) treatment, with moxifloxacin, levofloxacin, or gatifloxacin being prescribed to MDR-TB patients.
Alvarez-Cabrera, Nadine   +16 more
core   +2 more sources

New Potential Pharmacological Targets of Plant-Derived Hydroxyanthraquinones from Rubia spp.

open access: yesMolecules, 2022
The increased use of polyphenols nowadays poses the need for identification of their new pharmacological targets. Recently, structure similarity-based virtual screening of DrugBank outlined pseudopurpurin, a hydroxyanthraquinone from Rubia cordifolia spp.
Petko Alov   +6 more
doaj   +1 more source

Cinnamic‐Hydroxamic‐Acid Derivatives Exhibit Antibiotic, Anti‐Biofilm, and Supercoiling Relaxation Properties by Targeting Bacterial Nucleoid‐Associated Protein HU

open access: yesAdvanced Science, EarlyView.
Cinnamic‐hydroxamic‐acid derivatives (CHADs) are identified as novel inhibitors of the bacterial nucleoid‐associated protein HU, exhibiting potent antibacterial, anti‐biofilm (both inhibition and eradication), and DNA relaxation (anti‐supercoiling) activities. Moreover, CHADs demonstrate strong synergistic effects with multiple antibiotics.
Huan Chen   +22 more
wiley   +1 more source

Decrease in gyrase A protein expression in _E. coli_ cells inhibited by antisense ribozymes [PDF]

open access: yes, 2008
RNase P complexed with external guide sequence (EGS) represents a novel nucleic-acid-based gene interference approach to modulate gene expression. Nucleic acid-based gene interference technologies represent promising strategies for specific inhibition of
Malathi Raghunathan   +1 more
core   +1 more source

Structural insights into the gating of DNA passage by the topoisomerase II DNA-gate. [PDF]

open access: yes, 2018
Type IIA topoisomerases (Top2s) manipulate the handedness of DNA crossovers by introducing a transient and protein-linked double-strand break in one DNA duplex, termed the DNA-gate, whose opening allows another DNA segment to be transported through to ...
Chan, Nei-Li   +7 more
core   +2 more sources

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