Results 51 to 60 of about 67,641 (348)

RNA topoisomerase is prevalent in all domains of life and associates with polyribosomes in animals [PDF]

open access: yes, 2016
DNA Topoisomerases are essential to resolve topological problems during DNA metabolism in all species. However, the prevalence and function of RNA topoisomerases remain uncertain.
Ahmad, Muzammil   +20 more
core   +3 more sources

Clinical Significance of Expression of Topoisomerase 2а in Breast Cancer

open access: yesАнтибиотики и Химиотерапия, 2020
Topoisomerases are enzymes that control the topology of DNA. Topoisomerases are divided into types 1 and 2, depending on the mechanism of action. The article discusses the structure and mechanisms of the action of topoisomerases, the possibility of an ...
A. A. Samuseva   +3 more
doaj  

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

Topoisomerase IV can functionally replace all type 1A topoisomerases in Bacillus subtilis

open access: yesNucleic Acids Research, 2019
DNA topoisomerases play essential roles in chromosome organization and replication. Most bacteria possess multiple topoisomerases which have specialized functions in the control of DNA supercoiling or in DNA catenation/decatenation during recombination ...
Daniel R. Reuß   +9 more
semanticscholar   +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

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

New Insights into Structural and Functional Roles of Indole-3-acetic acid (IAA): Changes in DNA Topology and Gene Expression in Bacteria

open access: yesBiomolecules, 2019
: Indole-3-acetic acid (IAA) is a major plant hormone that affects many cellular processes in plants, bacteria, yeast, and human cells through still unknown mechanisms.
Roberto Defez   +7 more
doaj   +1 more source

Roles of Topoisomerases in Heterochromatin, Aging, and Diseases

open access: yesGenes, 2019
Heterochromatin is a transcriptionally repressive chromatin architecture that has a low abundance of genes but an enrichment of transposons. Defects in heterochromatin can cause the de-repression of genes and transposons, leading to deleterious ...
Seung kyu Lee, Weidong Wang
semanticscholar   +1 more source

Transcription as a Threat to Genome Integrity [PDF]

open access: yes, 2016
Genomes undergo different types of sporadic alterations, including DNA damage, point mutations, and genome rearrangements, that constitute the basis for evolution.
Aguilera López, Andrés   +1 more
core   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

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