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  • 1. Hellström, Sten-Olof
    et al.
    Jää-Aro, Kai-Mikael
    Laaksonen, Aatto
    Perceptualisation of molecular dynamics data2000Conference paper (Other academic)
  • 2. Ihrén, Johan
    et al.
    Laaksonen, Aatto
    Stockholm University.
    Jää-Aro, Kai-Mikael
    KTH.
    A generic file format for molecular dynamics simulations1998In: Buletinul Științific al Universitãții Politehnica din Timișoara, ISSN 1224-600X, Vol. 43(57), no 3, p. 251-257Article in journal (Refereed)
  • 3. Jää-Aro, Kai-Mikael
    et al.
    Ihrén, Johan
    Zetterling, Fredrik
    Laaksonen, Aatto
    Visual Interactive Molecular Simulation1999In: Proceedings of the High-Performance Computing Symposium - HPC '99: 1999 Advanced Simulation Technologies Conference : San Diego, California, April 11-15, 1999, Hyatt Islandia Hotel / [ed] Adrian Michel Tentner, San Diego: Society for Computer Simulation International , 1999, p. 43-46Conference paper (Refereed)
  • 4.
    Lindberg, Marie
    Södertörn University College, School of Life Sciences.
    Cloning, overexpression and biophysical characterization of grd/grl/wrt domains from Caenorhabditis elegans in Escherichia coli2008Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Hedgehog related genes have been shown to play a major role in development in all deuterostomes. In C.elegans, such genes have been found where the similarity is restricted to the C-terminal domain. This work has focused on the hedgehog related C.elegans proteins called ground (grd), ground-like (grl), and wart (wrt) which appear to form a unique structural family.These proteins are cysteine rich and have conserved cysteine patterns which, together with thethought that they are secreted, are expected to be in disulfide form. Since the extracellular environment is very oxidizing and due to the conserved cysteine pattern, disulfide bonds are thought to play a big part in the folding and stabilization of these proteins. The stability of the protein and the formation of a disulfide bond are related through a thermodynamic cycle, which insures that the stabilization of the protein by the disulfide is reflected by the identical stabilization of the disulfide by the protein. Practically, there are numerous parameters that can be used to try to achieve the correct disulfide bonds and folding, when doing in vitro trials, some of which were used in this project. C.elegans proteins grd-5, grd-13, grl-24, wrt-3 and wrt-5 were studied in this project. All of the proteins were expressed and purified with success, with theexception of grl-24. All constructs formed inclusion bodies. Some refolding attempts were performed on grd-13 and wrt-3. The presence of a disulfide bond in refolded grd-13 was demonstrated using chemical fragmentation. In general, these attempts did not give correctly folded proteins but provide a foundation to continue experiments aimed at producing a native-like protein for structural and functional studies.

  • 5.
    Yada, S.
    et al.
    KTH Royal Institute of Technology.
    Bagheri, S.
    KTH Royal Institute of Technology.
    Hansson, J.
    KTH Royal Institute of Technology.
    Do-Quang, M.
    KTH Royal Institute of Technology.
    Lundell, F.
    KTH Royal Institute of Technology.
    Van Der Wijngaart, W.
    KTH Royal Institute of Technology.
    Amberg, Gustav
    Södertörn University. KTH Royal Institute of Technology.
    Droplet leaping governs microstructured surface wetting2019In: Soft Matter, ISSN 1744-683X, E-ISSN 1744-6848, Vol. 15, no 46, p. 9528-9536Article in journal (Refereed)
    Abstract [en]

    Microstructured surfaces that control the direction of liquid transport are not only ubiquitous in nature, but they are also central to technological processes such as fog/water harvesting, oil-water separation, and surface lubrication. However, a fundamental understanding of the initial wetting dynamics of liquids spreading on such surfaces is lacking. Here, we show that three regimes govern microstructured surface wetting on short time scales: spread, stick, and contact line leaping. The latter involves establishing a new contact line downstream of the wetting front as the liquid leaps over specific sections of the solid surface. Experimental and numerical investigations reveal how different regimes emerge in different flow directions during wetting of periodic asymmetrically microstructured surfaces. These insights improve our understanding of rapid wetting in droplet impact, splashing, and wetting of vibrating surfaces and may contribute to advances in designing structured surfaces for the mentioned applications.

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