Nature Communications, 2023 Genome topology is tied to R-loop formation and genome stability. However, the regulatory mechanism remains to be elucidated. By establishing a system to sense the connections between R-loops and genome topology states, we show that inhibiting DNA ...
Qin Li +7 more
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Distinguishing regional from within-codon rate heterogeneity in DNA sequence alignments [PDF]
, 2009 We present an improved phylogenetic factorial hidden Markov model (FHMM) for detecting two types of mosaic structures in DNA sequence alignments, related to (1) recombination and (2) rate heterogeneity.
Husmeier, D. +4 more
core +1 more source
Structural basis for allosteric regulation of Human Topoisomerase IIα
Nature Communications, 2021 Type 2 DNA topoisomerases (Top2) regulates DNA topology during DNA replication, transcription, and chromosome segregation. Here the authors describe a complete structure of the catalytic core of the human Topo IIα bound to DNA and etoposide, providing ...
Arnaud Vanden Broeck +5 more
doaj +1 more source
DNA topology: Topological transformation of DNA by reaction of cisplatin-DNA-core histone complexes with human DNA topoisomerase [PDF]
Nucleic Acids Symposium Series, 2002 Cis-diamminedichloroplatinium(II), an active antitumor agent binds to core-histone -SV40 DNA complexes prepared by reaction of DNA with core-histone, and alters the fiber-like structure into the loosened structure. In order to model the cisplatin-modified chromatin complexes in cell, the complexes were reacted with human DNA topo II.
Shigeki, Kobayashi +4 more
openaire +2 more sources
Archaea: A Gold Mine for Topoisomerase Diversity
Frontiers in Microbiology, 2021 The control of DNA topology is a prerequisite for all the DNA transactions such as DNA replication, repair, recombination, and transcription. This global control is carried out by essential enzymes, named DNA-topoisomerases, that are mandatory for the ...
Florence Garnier +6 more
doaj +1 more source
DNA topology and topoisomerases [PDF]
Biochemistry and Molecular Biology Education, 2009 AbstractDNA is essentially an extremely long double‐stranded rope in which the two strands are wound about one another. As a result, topological properties of the genetic material, including DNA underwinding and overwinding, knotting, and tangling profoundly influence virtually every major nucleic acid process.
Joseph E, Deweese +2 more
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]
, 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 +1 more source
Physical Characterization of Gemini Surfactant-Based Synthetic Vectors for the Delivery of Linear Covalently Closed (LCC) DNA Ministrings. [PDF]
PLoS ONE, 2015 In combination with novel linear covalently closed (LCC) DNA minivectors, referred to as DNA ministrings, a gemini surfactant-based synthetic vector for gene delivery has been shown to exhibit enhanced delivery and bioavailability while offering a ...
Chi Hong Sum +3 more
doaj +1 more source
A targeting sequence directs DNA methyltransferase to sites of DNA replication in mammalian nuclei [PDF]
, 1992 Tissue-specific patterns of methylated deoxycytidine residues in the mammalian genome are preserved by postreplicative methylation of newly synthesized DNA. DNA methyltransferase (MTase) is here shown to associate with replication foci during S phase but
Heinz-Ulrich Weier +14 more
core +1 more source
TEX264 coordinates p97- and SPRTN-mediated resolution of topoisomerase 1-DNA adducts
Nature Communications, 2020 Eukaryotic topoisomerase 1 (TOP1) regulates DNA topology to ensure efficient DNA replication and transcription. Here, the authors reveal insights into the molecular resolution of topoisomerase 1-DNA adducts by TEX264, p97 and SPRTN.
John Fielden +16 more
doaj +1 more source