Over-expression of Topoisomerase II Enhances Salt Stress Tolerance in Tobacco [PDF]
, 2016 Topoisomerases are unique enzymes having an ability to remove or add DNA supercoils and untangle the snarled DNA. They can cut, shuffle and religate DNA strands and remove the torsional stress during DNA replication, transcription or recombination events.
Badri N. Singh +6 more
core +2 more sources
Advanced Science, EarlyView.Homoisoflavanone (HIF), a bioactive compound isolated from Polygonatum kingianum, selectively suppresses colorectal cancer progression by inducing DNA damage‐mediated mitochondrial apoptosis and parthanatos‐like cell death. HIF triggers mitochondrial dysfunction, including depolarized membrane potential, elevated ROS, and ATP depletion, while impairing
Hongjie Fan +12 more
wiley +1 more source
Cohesin causes replicative DNA damage by trapping DNA topological stress [PDF]
, 2020 DNA topological stress inhibits DNA replication fork (RF) progression and contributes to DNA replication stress. In Saccharomyces cerevisiae, we demonstrate that centromeric DNA and the rDNA array are especially vulnerable to DNA topological stress ...
Baxter, Jonathan +2 more
core +1 more source
Reconstitution and functional characterization of the unusual bi‐subunit type I DNA topoisomerase from Leishmania donovani [PDF]
FEBS Letters, 2004 Leishmania donovani topoisomerase I is an unusual bi‐subunit enzyme. The activity of the enzyme has been detected when the genes of the individual subunits were co‐expressed in yeast [J. Biol. Chem. 278 (2003) 3521]. Here, we report for the first time, the in vitro reconstitution of the two recombinant proteins, LdTOP1L and LdTOP1S, corresponding to ...
Brata Das, Benu +3 more
openaire +2 more sources
Advanced Science, EarlyView.A mechanically tunable ECM platform is created by integrating dECM–alginate matrices with in‐bath tumor printing. The mechanically tunable ECM environment drives tumors to acquire hypoxia, mechanotransduction signaling, metastatic traits, and drug‐resistant phenotypes that collectively promote malignant transformation.
Seok‐Hyeon Lee +8 more
wiley +1 more source
Effects of an Unusual Poison Identify a Lifespan Role for Topoisomerase 2 in Saccharomyces Cerevisiae [PDF]
, 2017 A progressive loss of genome maintenance has been implicated as both a cause and consequence of aging. Here we present evidence supporting the hypothesis that an age-associated decay in genome maintenance promotes aging in Saccharomyces cerevisiae (yeast)
Baxter, Bonnie +13 more
core +2 more sources
Antibody‐Empowered Nanomedicine for Precise Biomedical Applications
Advanced Science, EarlyView.This review explores strategies for functionalizing nanoparticles with antibodies to construct antibody‐empowered nanomedicine. It discusses the classification of these nanomedicines based on antibody structure, with a specific focus on their biomedical applications in diagnostics, bioimaging, and therapeutics for various diseases.
Chen Chen +7 more
wiley +1 more source
Transcriptional regulation of human topoisomerase II beta : a thesis presented to Massey University in partial fulfilment of the requirements for the degree of Master of Science in Biochemistry [PDF]
, 2006 Pages 24 and 25 are missing from the original copy.Topoisomerase II has an essential role in maintaining the DNA in the correct topological state required for various cellular processes.
Mawson, Claire
core
A new class of antibacterials, the imidazopyrazinones, reveal structural transitions involved in DNA gyrase poisoning and mechanisms of resistance [PDF]
, 2018 Imidazopyrazinones (IPYs) are a new class of compounds that target bacterial topoisomerases as a basis for their antibacterial activity. We have characterized the mechanism of these compounds through structural/mechanistic studies showing they bind and ...
Bacqué, Eric +7 more
core +2 more sources
A two-subunit type I DNA topoisomerase (reverse gyrase) from an extreme hyperthermophile. [PDF]
Proceedings of the National Academy of Sciences, 1996 A recently described reverse gyrase from the hyperthermophilic methanogen Methanopyrus kandleri is the only known example of a heterodimeric type I topoisomerase. The enzyme is made up of a 42-kDa subunit which covalently interacts with DNA (RgyA) and a 138-kDa subunit which binds ATP (RgyB). We have now cloned and sequenced the genes for both subunits
R, Krah +3 more
openaire +2 more sources