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Whitley, K.D. (author), Jukes, Calum (author), Tregidgo, Nicholas (author), Karinou, Eleni (author), Almada, Pedro (author), Cesbron, Yann (author), Henriques, Ricardo (author), Dekker, C. (author), Holden, Séamus (author)Despite the central role of division in bacterial physiology, how division proteins work together as a nanoscale machine to divide the cell remains poorly understood. Cell division by cell wall synthesis proteins is guided by the cytoskeleton protein FtsZ, which assembles at mid-cell as a dense Z-ring formed of treadmilling filaments. However...journal article 2021
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Dekker, R. (author), van der Meer, F.P. (author), Maljaars, J. (author), Sluys, Lambertus J. (author)This study presents calibration and validation of a cohesive extended finite element model for fatigue crack propagation in ductile materials. The approach relies on a separation between plasticity around the crack tip and fatigue crack growth at the crack tip such that the influence of plasticity on fatigue driving forces is predicted. This...journal article 2021
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Loeff, L. (author), Kerssemakers, J.W.J. (author), Joo, C. (author), Dekker, C. (author)Single-molecule techniques allow the visualization of the molecular dynamics of nucleic acids and proteins with high spatiotemporal resolution. Valuable kinetic information of biomolecules can be obtained when the discrete states within single-molecule time trajectories are determined. Here, we present a fast, automated, and bias-free step...journal article 2021
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Brauns, Fridtjof (author), Pawlik, G. (author), Halatek, Jacob (author), Kerssemakers, J.W.J. (author), Frey, Erwin (author), Dekker, C. (author)Self-organisation of Min proteins is responsible for the spatial control of cell division in Escherichia coli, and has been studied both in vivo and in vitro. Intriguingly, the protein patterns observed in these settings differ qualitatively and quantitatively. This puzzling dichotomy has not been resolved to date. Using reconstituted...journal article 2021
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Yang, W.W.W. (author), van Dijk, M.C. (author), Primavera, Christian (author), Dekker, C. (author)We have developed a fabrication methodology for label-free optical trapping of individual nanobeads and proteins in inverted-bowtie-shaped plasmonic gold nanopores. Arrays of these nanoapertures can be reliably produced using focused ion beam (FIB) milling with gap sizes of 10–20 nm, single-nanometer variation, and with a remarkable stability...journal article 2021
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Janissen, R. (author), Woodman, Andrew (author), Shengjuler, Djoshkun (author), Vallet, Thomas (author), Lee, Kuo Ming (author), Kuijpers, L.C. (author), Moustafa, Ibrahim M. (author), Fitzgerald, Fiona (author), Dekker, N.H. (author)Viral RNA-dependent RNA polymerases (RdRps) are a target for broad-spectrum antiviral therapeutic agents. Recently, we demonstrated that incorporation of the T-1106 triphosphate, a pyrazine-carboxamide ribonucleotide, into nascent RNA increases pausing and backtracking by the poliovirus RdRp. Here, by monitoring enterovirus A-71 RdRp dynamics...journal article 2021
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Boogaard, Bob (author), Tas, Ali (author), Nijssen, J.P.A. (author), Broeren, F.G.J. (author), van den Dobbelsteen, J.J. (author), Verhoeven, Vincent (author), Pluim, Jip (author), Dekker, Sing (author), Snijder, Eric J. (author), van Hemert, Martijn J. (author), Herfst, Sander (author)The SARS-CoV-2 pandemic resulted in shortages of production and test capacity of FFP2-respirators. Such facemasks are required to be worn by healthcare professionals when performing aerosol-generating procedures on COVID-19 patients. In response to the high demand and short supply, we designed three models of facemasks that are suitable for...journal article 2021
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Klughammer, N. (author), Dekker, C. (author)Holes in metal films do not allow the propagation of light if the wavelength is much larger than the hole diameter, establishing such nanopores as so-called zero-mode waveguides (ZMWs). Molecules, on the other hand, can still pass through these holes. We use this to detect individual fluorophore-labelled molecules as they travel through a ZMW...journal article 2021
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Dekker, R. (author), van der Meer, F.P. (author), Maljaars, Johan (author), Sluys, Lambertus J. (author)A numerical model for corrosion pit propagation under mechanical loading is presented. The level set method is used for corrosion front tracking and also enables the domain to be split into a solid and a pit domain. In the pit the diffusion of atoms originating from the dissolution process occurring at the pit front is simulated. The model is...journal article 2021
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Ryu, J.K. (author), Bouchoux, Céline (author), Liu, Hon Wing (author), Kim, E. (author), Minamino, Masashi (author), de Groot, Ralph (author), Katan, A.J. (author), Bonato, Andrea (author), Marenduzzo, Davide (author), Michieletto, Davide (author), Uhlmann, Frank (author), Dekker, C. (author)Structural maintenance of chromosome (SMC) protein complexes are able to extrude DNA loops. While loop extrusion constitutes a fundamental building block of chromosomes, other factors may be equally important. Here, we show that yeast cohesin exhibits pronounced clustering on DNA, with all the hallmarks of biomolecular condensation. DNA...journal article 2021
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Japaridze, A. (author), Yang, W.W.W. (author), Dekker, C. (author), Nasser, William (author), Muskhelishvili, Georgi (author)Nucleoid-associated proteins (NAPs) are a class of highly abundant DNA-binding proteins in bacteria and archaea. While both the composition and relative abundance of the NAPs change during the bacterial growth cycle, surprisingly little is known about their crosstalk in mutually binding and stabilizing higher-order nucleoprotein complexes in...journal article 2021
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Fragasso, A. (author), de Vries, Hendrik W. (author), Andersson, John (author), van der Sluis, E.O. (author), van der Giessen, Erik (author), Dahlin, Andreas (author), Onck, Patrick R. (author), Dekker, C. (author)Nuclear Pore Complexes (NPCs) regulate bidirectional transport between the nucleus and the cytoplasm. Intrinsically disordered FG-Nups line the NPC lumen and form a selective barrier, where transport of most proteins is inhibited whereas specific transporter proteins freely pass. The mechanism underlying selective transport through the NPC is...journal article 2021
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Sanchez González, H. (author), Mc Cluskey, K.A. (author), van Laar, T. (author), van Veen, E.N.W. (author), Asscher, F.M. (author), Solano Hermosilla, B.P. (author), Diffley, John F.X. (author), Dekker, N.H. (author)DNA replication in eukaryotes initiates at many origins distributed across each chromosome. Origins are bound by the origin recognition complex (ORC), which, with Cdc6 and Cdt1, recruits and loads the Mcm2-7 (MCM) helicase as an inactive double hexamer during G1 phase. The replisome assembles at the activated helicase in S phase. Although the...journal article 2021
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Kluba, M.M. (author), Li, J. (author), Parkkinen, Katja (author), Louwerse, Marcus (author), Snijder, Jaap (author), Dekker, R. (author)Several Silicon on Insulator (SOI) wafer manufacturers are now offering products with customer‐defined cavities etched in the handle wafer, which significantly simplifies the fabrication of MEMS devices such as pressure sensors. This paper presents a novel cavity buried oxide (BOX) SOI substrate (cavity‐BOX) that contains a patterned BOX...journal article 2021
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Van de Cauter, L. (author), Fanalista, F. (author), van Buren, L. (author), De Franceschi, N. (author), Godino, E. (author), Bouw, Sharon (author), Danelon, C.J.A. (author), Dekker, C. (author), Koenderink, G.H. (author), Ganzinger, Kristina A. (author)Giant unilamellar vesicles (GUVs) are often used to mimic biological membranes in reconstitution experiments. They are also widely used in research on synthetic cells, as they provide a mechanically responsive reaction compartment that allows for controlled exchange of reactants with the environment. However, while many methods exist to...journal article 2021
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Perli, T. (author), Vos, A.M. (author), Bouwknegt, J. (author), Dekker, W.J.C. (author), Wiersma, S.J. (author), Mooiman, C. (author), Ortiz Merino, R.A. (author), Daran, J.G. (author), Pronk, J.T. (author)Neocallimastigomycetes are unique examples of strictly anaerobic eukaryotes. This study investigates how these anaerobic fungi bypass reactions involved in synthesis of pyridine nucleotide cofactors and coenzyme A that, in canonical fungal pathways, require molecular oxygen. Analysis of Neocallimastigomycetes proteomes identified a candidate...journal article 2021
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Dekker, M.C. (author), van Egmond, R. (author), Molenbroek, J.F.M. (author), Vink, P. (author)BACKGROUND: Former studies on work-related upper limb disorders (WRULD) within university education report substantial prevalence rates. In this study, developments in WRULD amongst students in the period 2004-2014 were investigated. Our findings can be a benchmark for future studies, in particular when there are major societal changes as in...journal article 2021
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Mooiman, C. (author), Bouwknegt, J. (author), Dekker, W.J.C. (author), Wiersma, S.J. (author), Ortiz Merino, R.A. (author), de Hulster, A.F. (author), Pronk, J.T. (author)All known facultatively fermentative yeasts require molecular oxygen for growth. Only in a small number of yeast species, these requirements can be circumvented by supplementation of known anaerobic growth factors such as nicotinate, sterols and unsaturated fatty acids. Biosynthetic oxygen requirements of yeasts are typically small and,...journal article 2021
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Tang, Y. (author), Ha, S. (author), Begou, Thomas (author), Lumeau, Julien (author), Urbach, Paul (author), Dekker, N.H. (author), Adam, A.J.L. (author)The ability to apply force and torque directly to micro- and nanoscale particles in optical traps has a wide range of applications. While full control of both force and torque in three dimensions has been realized using top-down fabrication of rod-shaped particles composed of birefringent crystalline materials, widespread usage of such...journal article 2020
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Japaridze, A. (author), Gogou, C. (author), Kerssemakers, J.W.J. (author), Nguyen, Huyen My (author), Dekker, C. (author)The replication and transfer of genomic material from a cell to its progeny are vital processes in all living systems. Here we visualize the process of chromosome replication in widened E. coli cells. Monitoring the replication of single chromosomes yields clear examples of replication bubbles that reveal that the two replisomes move...journal article 2020