Results 51 to 60 of about 57,780 (287)

“Breaking up is hard to do”: the formation and resolution of sister chromatid intertwines [PDF]

, 2014
The absolute necessity to resolve every intertwine between the two strands of the DNA double helix provides a massive challenge to the cellular processes that duplicate and segregate chromosomes.
Bartkova, Baumann, Baxter, Baxter, Baxter, Bermejo, Bester, Branzei, Branzei, Brill, Burrell, Bzymek, Cejka, Champoux, Champoux, Chan, Chan, Chang, Chu, Crisona, Cuylen, Cuylen, Delbrück, Di Micco, Dominguez-Sola, Ekholm-Reed, Farcas, Fernandez, Gandhi, Gangloff, Gerlich, Germann, Giet, Goodwin, Gorgoulis, Halazonetis, Hardy, Hawkins, Hendzel, Hiasa, Hiasa, Hiasa, Hills, Hirano, Hirano, Hirano, Holm, Hsu, Jonathan Baxter, Kato, Kato, Khodursky, Khodursky, Kimura, Kimura, Kitamura, Koshland, Kreuzer, Kueng, Lavoie, Leman, Lucas, Mantiero, Maresca, Marston, Martinez-Robles, Matos, McClendon, McClintock, McGlynn, McGuffee, Mullen, Naughton, Neelsen, Newport, Oliveira, Ono, Paulson, Peter, Postow, Rattner, Rybenkov, Rybenkov, Sakaguchi, Samejima, Schoeffler, Schvartzman, Shamu, Shintomi, Spruck, Stuchinskaya, Sullivan, Sundin, Sundin, Suski, Symington, Szakal, Tedeschi, Temime-Smaali, Toledo, Vologodskii, Vos, Wang, Wang, Wang, Watson, Watson, Wei, Wilkins, Zechiedrich, Zechiedrich   +110 more
core   +1 more source

Dynamics of DNA Supercoil Relaxation by Type II Topoisomerases [PDF]

Biophysical Journal, 2011
Dynamics of DNA supercoil relaxation by type II topoisomerasesQing Shao∗, Laura Finzi∗, and David Dunlap#Dept. of Physics∗ and Cell Biology#, Emory University, Atlanta, GA 30322Type II topoisomerases are some of the main targets of anti-cancer drugs, since they catalyze DNA decatenation and unwinding which is crucial for cell division. A recent crystal
Shao, Qing, Dunlap, David, Finzi, Laura
openaire   +1 more source

Arabidopsis thaliana GYRB3 does not encode a DNA gyrase subunit.

PLoS ONE, 2010
BackgroundDNA topoisomerases are enzymes that control the topology of DNA in all cells. DNA gyrase is unique among the topoisomerases in that it is the only enzyme that can actively supercoil DNA using the free energy of ATP hydrolysis.
Katherine M Evans-Roberts, Christian Breuer, Melisa K Wall, Keiko Sugimoto-Shirasu, Anthony Maxwell   +4 more
doaj   +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

Structural basis of gate-DNA breakage and resealing by type II topoisomerases.

PLoS ONE, 2010
Type II DNA topoisomerases are ubiquitous enzymes with essential functions in DNA replication, recombination and transcription. They change DNA topology by forming a transient covalent cleavage complex with a gate-DNA duplex that allows transport of a ...
Ivan Laponogov, Xiao-Su Pan, Dennis A Veselkov, Katherine E McAuley, L Mark Fisher, Mark R Sanderson   +5 more
doaj   +1 more source

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

Hot-spot consensus of fluoroquinolone-mediated DNA cleavage by Gram-negative and Gram-positive type II DNA topoisomerases

Nucleic Acids Research, 2007
Bacterial DNA gyrase and topoisomerase IV are selective targets of fluoroquinolones. Topoisomerase IV versus gyrase and Gram-positive versus Gram-negative behavior was studied based on the different recognition of DNA sequences by topoisomerase–quinolone
S. Richter, Giulia Giaretta, Valentina Comuzzi, Elisabetta Leo, L. Mitchenall, L. Fisher, A. Maxwell, M. Palumbo   +7 more
semanticscholar   +1 more source

Local selection rules that can determine specific pathways of DNA unknotting by type II DNA topoisomerases [PDF]

, 2017
We performed numerical simulations of DNA chains to understand how local geometry of juxtaposed segments in knotted DNA molecules can guide type II DNA topoisomerases to perform very efficient relaxation of DNA knots.
Burnier, Yannis, Flammini, Alessandro, Stasiak, Andrzej, Weber, Cedric   +3 more
core  

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS 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

Structural insights into the DNA topoisomerase II of the African swine fever virus

Nature Communications
Type II topoisomerases are ubiquitous enzymes that play a pivotal role in modulating the topological configuration of double-stranded DNA. These topoisomerases are required for DNA metabolism and have been extensively studied in both prokaryotic and ...
Jingyuan Cong, Yuhui Xin, Huiling Kang, Yunge Yang, Chenlong Wang, Dongming Zhao, Xuemei Li, Zihe Rao, Yutao Chen   +8 more
doaj   +1 more source