Results 11 to 20 of about 1,469,390 (226)

Kinetic Study of DNA Topoisomerases by Supercoiling-Dependent Fluorescence Quenching. [PDF]

open access: yesACS Omega, 2019
DNA topoisomerases are essential enzymes for all living organisms and important targets for anticancer drugs and antibiotics. Although DNA topoisomerases have been studied extensively, steady-state kinetics has not been systematically investigated ...
Wang Y   +7 more
europepmc   +3 more sources

Molecular Docking for the Development of Alternative Therapies against Leishmaniasis

open access: yesChemistry Proceedings, 2023
Topoisomerases play a pivotal role in regulating the topological structure of DNA during fundamental processes such as transcription, DNA repair, or DNA replication; because of this, topoisomerases are biological targets in pathogenic microorganisms or ...
Juan Diego Guarimata   +3 more
doaj   +1 more source

Tricking enzymes in living cells: a mechanism-based strategy for design of DNA topoisomerase biosensors

open access: yesJournal of Nanobiotechnology, 2021
Most activity-based molecular probes are designed to target enzymes that catalyze the breaking of chemical bonds and the conversion of a unimolecular substrate into bimolecular products.
Sai Ba   +3 more
doaj   +1 more source

SUMO: A Swiss Army Knife for Eukaryotic Topoisomerases

open access: yesFrontiers in Molecular Biosciences, 2022
Topoisomerases play crucial roles in DNA metabolism that include replication, transcription, recombination, and chromatin structure by manipulating DNA structures arising in double-stranded DNA.
Yilun Sun, John L. Nitiss, Yves Pommier
doaj   +1 more source

Controlling the topology of mammalian mitochondrial DNA

open access: yesOpen Biology, 2021
The genome of mitochondria, called mtDNA, is a small circular DNA molecule present at thousands of copies per human cell. MtDNA is packaged into nucleoprotein complexes called nucleoids, and the density of mtDNA packaging affects mitochondrial gene ...
Katja E. Menger   +3 more
doaj   +1 more source

Topological Process of Splitting DNA-Links

open access: yesBiomath, 2022
A DNA replicon is modeled by a special type of 2-component link, called a DNA-link, in which two circles form a double helix around a trivial center core curve.
Abdul Adheem Mohamad, Tsukasa Yashiro
doaj   +1 more source

Type IA Topoisomerases as Targets for Infectious Disease Treatments

open access: yesMicroorganisms, 2021
Infectious diseases are one of the main causes of death all over the world, with antimicrobial resistance presenting a great challenge. New antibiotics need to be developed to provide therapeutic treatment options, requiring novel drug targets to be ...
Ahmed Seddek   +2 more
doaj   +1 more source

Data of transcriptional effects of the merbarone-mediated inhibition of TOP2

open access: yesData in Brief, 2022
Type II DNA topoisomerases relax topological stress by transiently gating DNA passage in a controlled cut-and-reseal mechanism that affects both DNA strands.
Fernando M. Delgado-Chaves   +6 more
doaj   +1 more source

Structural Basis of Gate-DNA Breakage and Resealing by Type II Topoisomerases [PDF]

open access: yes, 2010
ype II DNA topoisomerases are ubiquitous enzymes with essential functions in DNA replication, recombination and transcription. They change DNA topology by forming a transient covalent cleavage complex with a gate-DNA duplex that allows transport of a ...
Laponogov, I   +27 more
core   +1 more source

Hot-spot consensus of fluoroquinolone-mediated DNA cleavage by gram-negative and gram-positive type II DNA topoisomerases [PDF]

open access: yes, 2007
Bacterial DNA gyrase and topoisomerase IV are selective targets of fluoroquinolones. Topoisomerase IV versus gyrase and Gram-positive versus Gram-negative behavior was studied based on the different recognition of DNA sequences by topoisomerase ...
GIARETTA G   +15 more
core   +1 more source

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