Results 11 to 20 of about 90,099 (199)

MRE11 facilitates the removal of human topoisomerase II complexes from genomic DNA [PDF]

open access: yesBiology Open, 2012
Summary Topoisomerase II creates a double-strand break intermediate with topoisomerase covalently coupled to the DNA via a 5′-phosphotyrosyl bond. These intermediate complexes can become cytotoxic protein-DNA adducts and DSB repair at these lesions ...
Ka Cheong Lee   +10 more
doaj   +2 more sources

Topoisomerase-II mediated biochemical mapping of centromeres and nitroreductase mediated drug metabolism in Trypanosomatids [PDF]

open access: yes, 2012
PhDThe protozoan parasites Trypanosoma cruzi and Trypanosoma brucei are the causative agents of Chagas disease and Human African sleeping sickness respectively.
Bot, Christopher
core   +4 more sources

Bacterial Topoisomerases, Anti‐Topoisomerases, and Anti‐Topoisomerase Resistance [PDF]

open access: yesClinical Infectious Diseases, 1998
Topoisomerases are ubiquitous enzymes necessary for controlling the interlinking and twisting of DNA molecules. Among the four topoisomerases identified in eubacteria, two, DNA gyrase and topoisomerase IV have been exploited by nature and the pharmaceutical industry as antibacterial targets.
openaire   +2 more sources

The impact of the C-terminal domain on the interaction of human DNA topoisomerase II α and β with DNA [PDF]

open access: yes, 2011
<b>Background</b> Type II DNA topoisomerases are essential, ubiquitous enzymes that act to relieve topological problems arising in DNA from normal cellular activity.
Caroline A. Austin   +7 more
core   +2 more sources

Clerocidin interacts with the cleavage complex of Streptococcus pneumoniae topoisomerase IV to induce selective irreversible DNA damage [PDF]

open access: yes, 2006
Clerocidin (CL), a diterpenoid natural product, alkylates DNA through its epoxide moiety and exhibits both anticancer and antibacterial activities. We have examined CLaction in the presence of topoisomerase IV from Streptococcus pneumoniae.
Fisher, LM   +11 more
core   +1 more source

Prospects of Topoisomerase Inhibitors as Promising Anti-Cancer Agents

open access: yesPharmaceuticals, 2023
Topoisomerases are very important enzymes that regulate DNA topology and are vital for biological actions like DNA replication, transcription, and repair. The emergence and spread of cancer has been intimately associated with topoisomerase dysregulation.
Prasanna Anjaneyulu Yakkala   +3 more
doaj   +1 more source

Topoisomerase IIα promotes activation of RNA polymerase I transcription by facilitating pre-initiation complex formation [PDF]

open access: yes, 2013
Type II DNA topoisomerases catalyse DNA double-strand cleavage, passage and re-ligation to effect topological changes. There is considerable interest in elucidating topoisomerase II roles, particularly as these proteins are targets for anti-cancer drugs.
Porter, Andrew C. G.   +22 more
core   +1 more source

On the viability of Escherichia coli cells lacking DNA topoisomerase I [PDF]

open access: yes, 2012
Copyright @ 2012 Stockum et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution,
Lloyd, RG   +8 more
core   +1 more source

Inhibition of Poly(ADP-Ribose) polymerase enhances the toxicity of 131I-Metaiodobenzylguanidine/Topotecan combination therapy to cells and xenografts that express the noradrenaline transporter [PDF]

open access: yes, 2012
Targeted radiotherapy using [131I]meta-iodobenzylguanidine ([131I]MIBG) has produced remissions in some neuroblastoma patients. We previously reported that combining [131I]MIBG with the topoisomerase I (Topo-I) inhibitor topotecan induced long-term DNA ...
McCluskey, Anthony G   +7 more
core   +4 more sources

The Difficult Case of Crystallization and Structure Solution for the ParC55 Breakage-Reunion Domain of Topoisomerase IV from Streptococcus pneumoniae. [PDF]

open access: yes, 2008
BACKGROUND: Streptococcus pneumoniae is the major cause of community-acquired pneumonia and is also associated with bronchitis, meningitis, otitis and sinusitis.
Laponogov, I   +17 more
core   +1 more source

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