Results 81 to 90 of about 2,295,017 (227)
Animal Models and Experimental Medicine, EarlyView.We established that mixed DdCBE microinjection is an efficient, heritable, and precise strategy for generating multiplex mtDNA mutant rats. This advancement significantly expands the utility of DdCBEs for mitochondrial disease modeling, providing a robust platform for exploring the pathogenic mechanisms of complex mtDNA mutations and developing ...
Xu Zhang +14 more
wiley +1 more source
Nucleic Acids Research, 2016 The topological state of DNA is important for replication, recombination and transcription, and is regulated in vivo by DNA topoisomerases. Gyrase introduces negative supercoils into DNA at the expense of ATP hydrolysis.
A. Gubaev, D. Weidlich, D. Klostermeier
semanticscholar +1 more source
Harnessing Methyltransferase‐Guided Targeting for Sequence‐Specific Proximity Labeling of DNA
Angewandte Chemie, Volume 138, Issue 15, 6 April 2026.A novel methyltransferase‐mediated approach leveraging rationally designed S‐adenosyl‐L‐methionine (SAM) analogues was developed to achieve sequence‐specific DNA labeling but in proximity to the natural transfer site, addressing key limitations of previously established methods, including ligand instability and methylation‐sensitive labeling.
Xiong Chen +8 more
wiley +2 more sources
Topoisomerase IIα represses transcription by enforcing promoter-proximal pausing
Cell Reports, 2021 Summary: Accumulation of topological stress in the form of DNA supercoiling is inherent to the advance of RNA polymerase II (Pol II) and needs to be resolved by DNA topoisomerases to sustain productive transcriptional elongation.
Andrés Herrero-Ruiz +6 more
doaj +1 more source
Effects of physiological self-crowding of DNA on shape and biological properties of DNA molecules with various levels of supercoiling. [PDF]
, 2015 DNA in bacterial chromosomes and bacterial plasmids is supercoiled. DNA supercoiling is essential for DNA replication and gene regulation. However, the density of supercoiling in vivo is circa twice smaller than in deproteinized DNA molecules isolated ...
Benedetti, F. +7 more
core +2 more sources
Supercoiling in DNA and chromatin
Current Opinion in Genetics & Development, 2014 Supercoiling is a fundamental property of DNA and chromatin. It is modulated by polymerase and topoisomerase activities and, through regulated constraint, by DNA/chromatin binding proteins. As a non-covalent and elusive topological modification, supercoiling has proved intractable to research despite being a crucial regulator of nuclear structure and ...
Gilbert, N., Allan, J.
openaire +3 more sources
Biotechnology and Applied Biochemistry, EarlyView.ABSTRACT Rolling‐circle amplification (RCA) is a completely synthetic and rapid mechanism for scaling‐up bulk DNA that eliminates requirements for large‐scale bacterial fermentation. Several reports have described the surprising ability of large unprocessed (hyperbranched) rolling circle‐amplified DNA (RCA DNA) to effectively transfect cultured cells ...
Evelina Loghin +8 more
wiley +1 more source
Microorganisms, 2019 Prokaryotes have an essential gene—gyrase—that catalyzes negative supercoiling of plasmid and chromosomal DNA. Negative supercoils influence DNA replication, transcription, homologous recombination, site-specific recombination, genetic ...
Nikolay S. Rovinskiy +3 more
doaj +1 more source
ERK2-topoisomerase II regulatory axis is important for gene activation in immediate early genes
Nature Communications, 2023 The function of the mitogen-activated protein kinase signaling pathway is required for the activation of immediate early genes (IEGs), including EGR1 and FOS, for cell growth and proliferation.
Heeyoun Bunch +10 more
doaj +1 more source
Statistical Mechanics of Torque Induced Denaturation of DNA
, 1999 A unifying theory of the denaturation transition of DNA, driven by temperature T or induced by an external mechanical torque Gamma is presented. Our model couples the hydrogen-bond opening and the untwisting of the helicoidal molecular structure. We show
A. Campa +21 more
core +1 more source