Searched for: author:"Dekker, N.H."
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Ha, S. (author), Tang, Y. (author), van Oene, M.M. (author), Janissen, R. (author), Dries, R.M. (author), Solano Hermosilla, B.P. (author), Adam, A.J.L. (author), Dekker, N.H. (author)
Optical trapping of (sub)micron-sized particles is broadly employed in nanoscience and engineering. The materials commonly employed for these particles, however, have physical properties that limit the transfer of linear or angular momentum (or both). This reduces the magnitude of forces and torques, and the spatiotemporal resolution,...
journal article 2019
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Ordu, O. (author), Lusser, Alexandra (author), Dekker, N.H. (author)
Eukaryotic genomes are hierarchically organized into protein-DNA assemblies for compaction into the nucleus. Nucleosomes, with the (H3-H4)<sub>2</sub> tetrasome as a likely intermediate, are highly dynamic in nature by way of several different mechanisms. We have recently shown that tetrasomes spontaneously change the direction of their DNA...
journal article 2019
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Lee, Kuo Ming (author), Gong, Yu Nong (author), Hsieh, Tzu Hsuan (author), Woodman, Andrew (author), Dekker, N.H. (author), Cameron, Craig E. (author), Shih, Shin Ru (author)
Enterovirus A71 (EV-A71) is an important nonpolio enterovirus that causes severe neurological complications. In 1998, Taiwan experienced an EV-A71 outbreak that caused 78 deaths. Since then, periodic epidemics of EV-A71 associated with newly emerging strains have occurred. Several of these strains are known to be recombinant; however, how...
journal article 2018
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van Oene, M.M. (author), Ha, S. (author), Jager, T. (author), Lee, M. (author), Pedaci, F. (author), Lipfert, J. (author), Dekker, N.H. (author)
Single-molecule manipulation techniques have provided unprecedented insights into the structure, function, interactions, and mechanical properties of biological macromolecules. Recently, the single-molecule toolbox has been expanded by techniques that enable measurements of rotation and torque, such as the optical torque wrench (OTW) and...
journal article 2018
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Ordu, O. (author), Kremser, Leopold (author), Lusser, Alexandra (author), Dekker, N.H. (author)
Nucleosomes consisting of a short piece of deoxyribonucleic acid (DNA) wrapped around an octamer of histone proteins form the fundamental unit of chromatin in eukaryotes. Their role in DNA compaction comes with regulatory functions that impact essential genomic processes such as replication, transcription, and repair. The assembly of...
journal article 2018
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Berghuis, B.A. (author), Raducanu, Vlad-Stefan (author), Elshenawy, Mohamed M. (author), Jergic, Slobodan (author), Depken, S.M. (author), Dixon, NE (author), Hamdan, Samir M. (author), Dekker, N.H. (author)
Synchronizing the convergence of the two-oppositely moving DNA replication machineries at specific termination sites is a tightly coordinated process in bacteria. In Escherichia coli, a “replication fork trap” – found within a chromosomal region where forks are allowed to enter but not leave – is set by the protein–DNA roadblock Tus–Ter. The...
journal article 2017
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Dulin, D. (author), Arnold, Jamie J. (author), van Laar, T. (author), Oh, Hyung Suk (author), Lee, Cheri (author), Perkins, Angela L. (author), Harki, Daniel A. (author), Depken, S.M. (author), Cameron, Craig E. (author), Dekker, N.H. (author)
RNA viruses pose a threat to public health that is exacerbated by the dearth of antiviral therapeutics. The RNA-dependent RNA polymerase (RdRp) holds promise as a broad-spectrum, therapeutic target because of the conserved nature of the nucleotide-substrate-binding and catalytic sites. Conventional, quantitative, kinetic analysis of antiviral...
journal article 2017
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van Oene, M.M. (author), Dickinson, L.E. (author), Cross, B. (author), Pedaci, F. (author), Lipfert, J. (author), Dekker, N.H. (author)
The bacterial flagellar motor of Escherichia coli is a nanoscale rotary engine essential for bacterial propulsion. Studies on the power output of single motors rely on the measurement of motor torque and rotation under external load. Here, we investigate the use of magnetic tweezers, which in principle allow the application and active control...
journal article 2017
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Kriegel, Franziska (author), Ermann, Niklas (author), Forbes, R.J.G. (author), Dulin, D. (author), Dekker, N.H. (author), Lipfert, J. (author)
The mechanical properties of DNA fundamentally constrain and enable the storage and transmission of genetic information and its use in DNA nanotechnology. Many properties of DNA depend on the ionic environment due to its highly charged backbone. In particular, both theoretical analyses and direct singlemolecule experiments have shown its...
journal article 2017
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Berghuis, B.A. (author), Köber, M. (author), van Laar, T. (author), Dekker, N.H. (author)
Recent advances in high-throughput single-molecule magnetic tweezers have paved the way for obtaining information on individual molecules as well as ensemble-averaged behavior in a single assay. Here we describe how to design robust high-throughput magnetic tweezers assays that specifically require application of high forces (&gt;20. pN) for...
journal article 2016
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Vtyurina, N. (author), Dulin, D. (author), Docter, M.W. (author), Meyer, A.S. (author), Dekker, N.H. (author), Abbondanzieri, E. (author)
In all organisms, DNA molecules are tightly compacted into a dynamic 3D nucleoprotein complex. In bacteria, this compaction is governed by the family of nucleoid-associated proteins (NAPs). Under conditions of stress and starvation, an NAP called Dps (DNA binding protein from starved cells) becomes highly up-regulated and can massively...
journal article 2016
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Dekker, N.H. (author), Ha, S. (author), Janissen, R. (author), Ussembayev, Y. (author), van Oene, M.M. (author), Solano Hermosilla, B.P. (author)
Titanium dioxide (TiO2) is a key component of diverse optical and electronic applications that exploit its exceptional material properties. In particular, the use of TiO2 in its single-crystalline phase can offer substantial advantages over its amorphous and polycrystalline phases for existing and yet-to-be-developed applications. However, the...
journal article 2016
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Moolman, M.C. (author), Tiruvadi Krishnan, S. (author), Kerssemakers, J.W.J. (author), de Leeuw, R. (author), Lorent, V.J.F. (author), Sherratt, David J. (author), Dekker, N.H. (author)
Protein-DNA complexes are one of the principal barriers the replisome encounters during replication. One such barrier is the Tus-ter complex, which is a direction dependent barrier for replication fork progression. The details concerning the dynamics of the replisome when encountering these Tus-ter barriers in the cell are poorly understood....
journal article 2016
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Ordu, O. (author), Lusser, A. (author), Dekker, N.H. (author)
Eukaryotic DNA is tightly packed into a hierarchically ordered structure called chromatin in order to fit into the micron-scaled nucleus. The basic unit of chromatin is the nucleosome, which consists of a short piece of DNA wrapped around a core of eight histone proteins. In addition to their role in packaging DNA, nucleosomes impact the...
journal article 2016
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Vlijm, R. (author), Lee, M. (author), Ordu, O. (author), Boltengagen, A. (author), Lusser, A. (author), Dekker, N.H. (author), Dekker, C. (author)
Eukaryotic nucleosomes consists of an (H3-H4)2 tetramer and two H2A-H2B dimers, around which 147 bp of DNA are wrapped in 1.7 left-handed helical turns. During chromatin assembly, the (H3-H4)2 tetramer binds first, forming a tetrasome that likely constitutes an important intermediate during ongoing transcription. We recently showed that (H3-H4)2...
journal article 2015
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Krishnan, S.T. (author), Moolman, M.C. (author), Van Laar, T. (author), Meyer, A.S. (author), Dekker, N.H. (author)
Background Chromosome engineering encompasses a collection of homologous recombination-based techniques that are employed to modify the genome of a model organism in a controlled fashion. Such techniques are widely used in both fundamental and industrial research to introduce multiple insertions in the same Escherichia coli strain. To date, ?...
journal article 2015
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Van Oene, M.M. (author), Dickinson, L.E. (author), Pedaci, F. (author), Köber, M. (author), Dulin, D. (author), Lipfert, J. (author), Dekker, N.H. (author)
Superparamagnetic beads are widely used in biochemistry and single-molecule biophysics, but the nature of the anisotropy that enables the application of torques remains controversial. To quantitatively investigate the torques experienced by superparamagnetic particles, we use a biological motor to rotate beads in a magnetic field and demonstrate...
journal article 2015
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Dulin, D. (author), Vilfan, I.D. (author), Berghuis, B.A. (author), Hage, S. (author), Bamford, D.H. (author), Poranen, M.M. (author), Depken, S.M. (author), Dekker, N.H. (author)
RNA viruses have specific mutation rates that balance the conflicting needs of an evolutionary response to host antiviral defenses and avoidance of the error catastrophe. While most mutations are known to originate in replication errors, difficulties of capturing the underlying dynamics have left the mechanochemical basis of viral mutagenesis...
journal article 2015
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Vlijm, R. (author), Lee, M. (author), Lipfert, J. (author), Lusser, A. (author), Dekker, C. (author), Dekker, N.H. (author)
DNA wrapping around histone octamers generates nucleosomes, the basic compaction unit of eukaryotic chromatin. Nucleosome stability is carefully tuned to maintain DNA accessibility in transcription, replication, and repair. Using freely orbiting magnetic tweezers, which measure the twist and length of single DNA molecules, we monitor the real...
journal article 2015
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Lipfert, J. (author), van Oene, M.M. (author), Lee, M. (author), Pedaci, F. (author), Dekker, N.H. (author)
journal article 2015
Searched for: author:"Dekker, N.H."
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