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Wiktor, J.M. (author), van der Does, M. (author), Büller, L.A. (author), Sherratt, David J. (author), Dekker, C. (author)The formation of 3 single-stranded DNA overhangs is a first and essential step during homology-directed repair of double-stranded breaks (DSB) of DNA, a task that in Escherichia coli is performed by RecBCD. While this protein complex has been well characterized through in vitro single-molecule studies, it has remained elusive how end...journal article 2018
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Vlijm, R. (author), Torre, J. (author), Dekker, C. (author)The metabolism of DNA in cells relies on the balance between hybridized double-stranded DNA (dsDNA) and local de-hybridized regions of ssDNA that provide access to binding proteins. Traditional melting experiments, in which short pieces of dsDNA are heated up until the point of melting into ssDNA, have determined that AT-rich sequences have a...journal article 2015
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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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Plesa, C. (author), Van Loo, N. (author), Dekker, C. (author)Nanopore experiments have traditionally been carried out with chloride-based solutions. Here we introduce silver/silver-glutamate-based electrochemistry as an alternative, and study the viscosity, conductivity, and nanopore translocation characteristics of potassium-, sodium-, and lithium-glutamate solutions. We show that it has a linear...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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Hol, F.J.H. (author), Galajda, P. (author), Woolthuis, R.G. (author), Dekker, C. (author), Keymer, J.E. (author)Background The spatial structure of a habitat can have a strong impact on community dynamics. Different experimental approaches exist to explore the effect of spatial structure on bacterial communities. To investigate the effect of ‘space’, a single implementation of spatial structure is often contrasted to bacterial community dynamics in well...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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Klein, S. (author), Vast, E. (author), Van Soest, J. (author), Dekker, A. (author), Koek, M. (author), Niessen, W.J. (author)1st Clinical Research Informatics (CRI) Solutions Day Duesseldorf, Germany, 26-27 May 2014journal 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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Moolman, M.C. (author), Tiruvadi Krishnan, S. (author), Kerssemakers, J.W.J. (author), Van den Berg, A. (author), Tulinski, P. (author), Depken, M. (author), Reyes-Lamothe, R. (author), Sherratt, D.J. (author), Dekker, N.H. (author)The ubiquitous sliding clamp facilitates processivity of the replicative polymerase and acts as a platform to recruit proteins involved in replication, recombination and repair. While the dynamics of the E. coli ?2-sliding clamp have been characterized in vitro, its in vivo stoichiometry and dynamics remain unclear. To probe both ?2-clamp...journal article 2014
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Burnham, D.R. (author), De Vlaminck, I. (author), Henighan, T. (author), Dekker, C. (author)Measurements in magnetic tweezers rely upon precise determination of the position of a magnetic microsphere. Fluctuations in the position due to Brownian motion allows calculation of the applied force, enabling deduction of the force-extension response function for a single DNA molecule that is attached to the microsphere. The standard approach...journal article 2014
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Ferrari, A.C. (author), Dekker, C. (author), Vandersypen, L.M.K. (author), Van Der Zant, H.S.J. (author)We present the science and technology roadmap for graphene, related two-dimensional crystals, and hybrid systems, targeting an evolution in technology, that might lead to impacts and benefits reaching into most areas of society. This roadmap was developed within the framework of the European Graphene Flagship and outlines the main targets and...journal article 2014
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Hol, F.J.H. (author), Voges, M.J. (author), Dekker, C. (author), Keymer, J.E. (author)Background: Antagonistic interactions mediated by antibiotics are strong drivers of bacterial community dynamics which shape biodiversity. Colicin production by Escherichia coli is such an interaction that governs intraspecific competition and is involved in promoting biodiversity. It is unknown how environmental cues affect regulation of the...journal article 2014
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Janissen, R. (author), Berghuis, B.A. (author), Dulin, D. (author), Wink, M. (author), Van Laar, T. (author), Dekker, N.H. (author)Magnetic tweezers are a powerful single-molecule technique that allows real-time quantitative investigation of biomolecular processes under applied force. High pulling forces exceeding tens of picoNewtons may be required, e.g. to probe the force range of proteins that actively transcribe or package the genome. Frequently, however, the...journal article 2014
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Hertzberger, R. (author), Arents, J. (author), Dekker, H.L. (author), Pridmore, D. (author), Gysler, C. (author), Kleerebezem, M. (author), Teixeira de Mattosa, M.J. (author)Hydrogen peroxide production is a well-known trait of many bacterial species associated with the human body. In the presence of oxygen, the probiotic lactic acid bacterium Lactobacillus johnsonii NCC 533 excretes up to 1 mM H2O2, inducing growth stagnation and cell death. Disruption of genes commonly assumed to be involved in H2O2 production (e...journal article 2014
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Joo, C. (author), Dekker, C. (author), Van Ginkel, H.G.T.M. (author), Meyer, A.S. (author)The invention provides a device for determining the type of protein in a liquid, the device comprising (a) an immobilized ATP dependent protease based molecular transporter machine configured to guide a protein that is functionalized with labels through a detection area of a detector, (b) said detector, configured to detect a signal as function...patent 2014
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Hol, F.J.H. (author), Galajda, P. (author), Nagy, K. (author), Woolthuis, R.G. (author), Dekker, C. (author), Keymer, J.E. (author)Cooperative organisms are ubiquitous in nature, despite their vulnerability to exploitation by cheaters. Although numerous theoretical studies suggest that spatial structure is critical for cooperation to persist, the spatial ecology of microbial cooperation remains largely unexplored experimentally. By tracking the community dynamics of...journal article 2013
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Van Loenhout, M.T. (author), De Vlaminck, I. (author), Flebus, B. (author), Den Blanken, J.F. (author), Zweifel, L.P. (author), Hooning, K.M. (author), Kerssemakers, J.W. (author), Dekker, C. (author)The functional state of the genome is determined by its interactions with proteins that bind, modify, and move along the DNA. To determine the positions and binding strength of proteins localized on DNA we have developed a combined magnetic and optical tweezers apparatus that allows for both sensitive and label-free detection. A DNA loop, that...journal article 2013
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Lee, M. (author), Lipfert, J. (author), Sanchez, H. (author), Wyman, C. (author), Dekker, N.H. (author)Human RAD51 is a key protein in the repair of DNA by homologous recombination. Its assembly onto DNA, which induces changes in DNA structure, results in the formation of a nucleoprotein filament that forms the basis of strand exchange. Here, we determine the structural and mechanical properties of RAD51-dsDNA filaments. Our measurements use two...journal article 2013