Results 21 to 30 of about 2,307,592 (280)

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

Archaea: A Gold Mine for Topoisomerase Diversity

open access: yesFrontiers in Microbiology, 2021
The control of DNA topology is a prerequisite for all the DNA transactions such as DNA replication, repair, recombination, and transcription. This global control is carried out by essential enzymes, named DNA-topoisomerases, that are mandatory for the ...
Florence Garnier   +6 more
doaj   +1 more source

Transcription facilitated genome-wide recruitment of topoisomerase I and DNA gyrase. [PDF]

open access: yesPLoS Genetics, 2017
Movement of the transcription machinery along a template alters DNA topology resulting in the accumulation of supercoils in DNA. The positive supercoils generated ahead of transcribing RNA polymerase (RNAP) and the negative supercoils accumulating behind
Wareed Ahmed   +5 more
doaj   +1 more source

Structural study of Topoisomerase IV-DNA-Levofloxacin complexes from Streptococcus pneumoniae [PDF]

open access: yesE3S Web of Conferences, 2019
S. pneumoniae is an important pathogen causing pulmonary infection, acute otitis media and purulent meningitis in infants and children. Type II topoisomerases are enzymes that play essential roles in DNA replication, chromosome segregation and ...
Wang Xilan
doaj   +1 more source

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

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