Results 31 to 40 of about 16,951 (259)

TDP2 promotes repair of topoisomerase I-mediated DNA damage in the absence of TDP1 [PDF]

, 2012
The abortive activity of topoisomerases can result in clastogenic and/or lethal DNA damage in which the topoisomerase is covalently linked to the 3'- or 5'-terminus of a DNA strand break. This type of DNA damage is implicated in chromosome translocations
Abhishek Sharma, Barthelmes, Danny Huylebroeck, Davies, Davies, El-Khamisy, El-Khamisy, El-Khamisy, El-Khamisy, Esguerra, Giovanella, Hirano, Hudson, Interthal, Interthal, Junko Murai, Katyal, Keith W. Caldecott, Ledesma, Liesbeth Vermeire, Lieve Umans, Limei Ju, Murai, Nitiss, Pommier, Pommier, Pype, Sherif F. El-Khamisy, Shunichi Takeda, Takashima, Varady, Vilotti, Yang, Yves Pommier, Zeng, Zhihong Zeng, Zhou   +36 more
core   +1 more source

Methanosarcina acetivorans C2A topoisomerase IIIα, an archaeal enzyme with promiscuity in divalent cation dependence. [PDF]

PLoS ONE, 2011
Topoisomerases play a fundamental role in genome stability, DNA replication and repair. As a result, topoisomerases have served as therapeutic targets of interest in Eukarya and Bacteria, two of the three domains of life.
Raymond Morales, Palita Sriratana, Jing Zhang, Isaac K O Cann   +3 more
doaj   +1 more source

Distinct requirements for the Rad32(Mre¹¹) nuclease and Ctp1(CtIP) in the removal of covalently bound topoisomerase I and II from DNA [PDF]

, 2009
For a cancer cell to resist treatment with drugs that trap topoisomerases covalently on the DNA, the topoisomerase must be removed. In this study, we provide evidence that the Schizosaccharomyces pombe Rad32Mre11 nuclease activity is involved in the ...
Akamatsu, Antony M. Carr, Baldwin, Champoux, Connelly, Connelly, Edgar Hartsuiker, El-Khamisy, Farah, Gutz, Hartsuiker, Hopfner, Hopfner, Keeney, Keeney, Krogh, Krogh, Lengsfeld, Limbo, Liu, Malik, Matthew J. Neale, McKee, Miyoshi, Moreau, Neale, Nitiss, Osheroff, Porter, Pouliot, Prinz, Sartori, Shaw, Stracker, Subramanian, Takashima, Tomita, Utsugi, Young   +38 more
core   +2 more sources

Determination of the Primary Molecular Target of 1,2,4-Triazole-Ciprofloxacin Hybrids [PDF]

, 2015
We have synthesized and examined the antibacterial activity, toxicity and affinity towards bacterial type II topoisomerases of a series of 1,2,4-triazole-ciprofloxacin hybrids.
Agata Paneth, Aleksandra Strzelczyk, Anna Malm, Barbara Kaproń, Barbara Rajtar, Dalhoff, Małgorzata Polz-Dacewicz, Oliphant, Paweł Stączek, Sharma, Tomasz Plech, Urszula Kosikowska, Łukasz Świątek   +12 more
core   +2 more sources

Conversion of DNA gyrase into a conventional type II topoisomerase [PDF]

Proceedings of the National Academy of Sciences, 1996
DNA gyrase is unique among topoisomerases in its ability to introduce negative supercoils into closed-circular DNA. We have demonstrated that deletion of the C-terminal DNA-binding domain of the A subunit of gyrase gives rise to an enzyme that cannot supercoil DNA but relaxes DNA in an ATP-dependent manner.
Kampranis, S C, Maxwell, A
openaire   +2 more sources

Type II DNA Topoisomerases Cause Spontaneous Double-Strand Breaks in Genomic DNA [PDF]

Genes, 2019
Type II DNA topoisomerase enzymes (TOP2) catalyze topological changes by strand passage reactions. They involve passing one intact double stranded DNA duplex through a transient enzyme-bridged break in another (gated helix) followed by ligation of the break by TOP2.
Suguru Morimoto, Masataka Tsuda, Heeyoun Bunch, Hiroyuki Sasanuma, Caroline Austin, Shunichi Takeda   +5 more
openaire   +2 more sources

Clerocidin selectively modifies the gyrase-DNA gate to induce irreversible and reversible DNA damage [PDF]

, 2008
Clerocidin (CL), a microbial diterpenoid, reacts with DNA via its epoxide group and stimulates DNA cleavage by type II DNA topoisomerases. The molecular basis of CL action is poorly understood.
Binaschi, Borgnetto, Brown, Cambau, Champoux, Corbett, Corbett, Ferrero, Fisher, Gatto, Higgins, Kawada, L. M. Fisher, M. Dias, M. Palumbo, Marians, Maxam, McCullough, Mizuuchi, Morrison, Pan, Pan, Pan, Pan, Pan, Peden, Pozzi, Richter, Richter, Richter, Shea, X. S. Pan, Yague, Yoshida, Zechiedrich   +34 more
core   +1 more source

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, Bax, Benjamin, Germe, Thomas, Jeannot, Frederic, Maxwell, Anthony, Stavenger, Robert A, Taillier, Thomas, Vörös, Judit   +7 more
core   +2 more sources

Anaphase chromatid motion: involvement of type II DNA topoisomerases

Biophysical Journal, 1995
Sister chromatids are topologically intertwined at the onset of anaphase: their segregation during anaphase is known to require strand-passing activity by type II DNA topoisomerase. We propose that the removal of the intertwinings involves at the same time the traction of the mitotic spindle and the activity of topoisomerases.
Duplantier, B., Jannink, G., Sikorav, J.L.   +2 more
openaire   +2 more sources

Controlled rotation mechanism of DNA strand exchange by the Hin serine recombinase. [PDF]

, 2016
DNA strand exchange by serine recombinases has been proposed to occur by a large-scale rotation of halves of the recombinase tetramer. Here we provide the first direct physical evidence for the subunit rotation mechanism for the Hin serine invertase ...
Johnson, Reid C, Lei, Xianbin, Marko, John F, McLean, Meghan M, Xiao, Botao   +4 more
core   +1 more source