Search for dissertations about: "topology"

Showing result 21 - 25 of 578 swedish dissertations containing the word topology.

  2. 21. Knots and Transport in Topological Matter

    Author : Marcus Stålhammar; Emil Johansson Bergholtz; Christiane Morais Smith; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Transport; Knots; Topology; non-Hermiticity; Weyl semimetals; Theoretical Physics; teoretisk fysik;

    Abstract : Topology has manifestations in physics ranging from the field of condensed matter to photonics. This dissertation provides a two-fold study on the impact of topology in Hermitian and non-Hermitian band structures. READ MORE

  4. 22. Determinants of membrane protein topology

    Author : Marie Johansson; Collin Robinson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; biokemi; Biochemistry;

    Abstract : The living cell, no matter if it is a simple prokaryotic bacterial cell or a highly specialised eukaryotic cell, synthesises a vast number of different proteins. In most organisms, 20-30 % of all proteins are thought to be transmembrane integral membrane proteins. READ MORE

  5. 23. Studies on the Conformation of Transmembrane Polypeptides in Membrane Proteins

    Author : Marika Cassel; Gunnar von Heijne; Martin Spiess; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; membrane protein; topology; transmembrane helix; helical hairpin; turn propensity; Biochemistry; Biokemi;

    Abstract : The major aim of the studies that this thesis is based on has been to better define the topological determinants of the formation of so-called helical hairpins during membrane protein assembly in the ER membrane.The helical hairpin is a basic folding unit in membrane proteins. READ MORE

  6. 24. Sequence-based predictions of membrane-protein topology, homology and insertion

    Author : Andreas Bernsel; Gunnar von Heijne; Volkhard Helms; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; membrane protein; topology prediction; hidden markov model; homology detection; Sec translocon; Bioinformatics; Bioinformatik; Biochemistry; biokemi;

    Abstract : Membrane proteins comprise around 20-30% of a typical proteome and play crucial roles in a wide variety of biochemical pathways. Apart from their general biological significance, membrane proteins are of particular interest to the pharmaceutical industry, being targets for more than half of all available drugs. READ MORE

  7. 25. Formalizing life : Towards an improved understanding of the sequence-structure relationship in alpha-helical transmembrane proteins

    Author : Håkan Viklund; Arne Elofsson; Kimmen Sjölander; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; bioinformatics; protein; topology; hidden Markov model; prediction; Bioinformatics; Bioinformatik; Biochemistry; biokemi;

    Abstract : Genes coding for alpha-helical transmembrane proteins constitute roughly 25% of the total number of genes in a typical organism. As these proteins are vital parts of many biological processes, an improved understanding of them is important for achieving a better understanding of the mechanisms that constitute life. READ MORE