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A Review of Natural and Synthetic Chalcones as Anticancer Agents Targeting Topoisomerase Enzymes [PDF]

open access: yesMolecules
Cancer remains one of the leading causes of morbidity and mortality worldwide, driving the search for innovative and selective therapeutic agents. Topoisomerases I and II are essential enzymes involved in key cellular processes such as DNA replication ...
François-Xavier Toublet   +2 more
doaj   +2 more sources

Topoisomerases as Targets for Novel Drug Discovery [PDF]

open access: yesPharmaceuticals
DNA topoisomerases (topo) are essential enzymes that maintain the integrity of the genome by regulating the topological state of DNA during replication, transcription, recombination and repair [...]
Andrej Perdih
doaj   +2 more sources

DNA topoisomerases as molecular targets for anticancer drugs

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry, 2020
The significant role of topoisomerases in the control of DNA chain topology has been confirmed in numerous research conducted worldwide. The prevalence of these enzymes, as well as the key importance of topoisomerase in the proper functioning of cells ...
Kamila Buzun   +3 more
doaj   +2 more sources

Supercoiled DNA recognition and cleavage control in topoisomerase VI [PDF]

open access: yesNature Communications
Type II topoisomerases modulate DNA supercoiling and resolve chromosome entanglements. Type IIB topoisomerases, exemplified by DNA topoisomerase VI (Top6), are used by plants and archaea to support endoreduplication and cell proliferation, respectively ...
Daniel E. Richman   +10 more
doaj   +2 more sources

DNA binding and cleavage mechanism of DNA topoisomerase VI, an evolutionary counterpart of Spo11/Wadjet/Gabija systems [PDF]

open access: yesStructural Dynamics
Type II topoisomerases resolve DNA supercoiling and chromosome entanglements. Type IIB topoisomerases, exemplified by Top6, are used by plants and archaea to support endoreduplication and cell proliferation, respectively; homologs of Top6 subunits ...
Daniel E Richman   +7 more
doaj   +2 more sources

New Insights into the Geometry and Topology of DNA Replication Intermediates [PDF]

open access: yesBiology
The regulation of superhelical stress, mediated by the combined action of topoisomerases and fork rotation, is crucial for DNA replication. The conformational changes during DNA replication are still experimentally challenging, mainly due to the rapid ...
Victor Martínez   +7 more
doaj   +2 more sources

Two-Dimensional Gel Electrophoresis to Study the Activity of Type IIA Topoisomerases on Plasmid Replication Intermediates

open access: yesBiology, 2021
DNA topoisomerases are the enzymes that regulate DNA topology in all living cells. Since the discovery and purification of ω (omega), when the first were topoisomerase identified, the function of many topoisomerases has been examined.
Jorge Cebrián   +5 more
doaj   +1 more source

Global Chromosome Topology and the Two-Component Systems in Concerted Manner Regulate Transcription in Streptomyces

open access: yesmSystems, 2021
Bacterial gene expression is controlled at multiple levels, with chromosome supercoiling being one of the most global regulators. Global DNA supercoiling is maintained by the orchestrated action of topoisomerases.
Martyna Gongerowska-Jac   +8 more
doaj   +1 more source

Dual Targeting Topoisomerase/G-Quadruplex Agents in Cancer Therapy—An Overview

open access: yesBiomedicines, 2022
Topoisomerase (Topo) inhibitors have long been known as clinically effective drugs, while G-quadruplex (G4)-targeting compounds are emerging as a promising new strategy to target tumor cells and could support personalized treatment approaches in the near
Silvia Salerno   +5 more
doaj   +1 more source

Topoisomerase Assays [PDF]

open access: yesCurrent Protocols in Pharmacology, 2012
AbstractTopoisomerases are nuclear enzymes that play essential roles in DNA replication, transcription, chromosome segregation, and recombination. All cells have two major forms of topoisomerases: type I enzymes, which make single‐stranded cuts in DNA, and type II enzymes, which cut and pass double‐stranded DNA. DNA topoisomerases are important targets
John L, Nitiss   +4 more
openaire   +2 more sources

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