Structural transitions in model beta-sheet tapes

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Bellesia, Giovanni and Fedorov, Maxim V. and Timoshenko, Edward G. (2008) Structural transitions in model beta-sheet tapes. Journal of Chemical Physics, 128 (19). -. 195105. ISSN 0021-9606 (https://doi.org/10.1063/1.2909550)

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Abstract

We present a molecular-scale simulation study of the structural transitions between helicoidal, helical, and tubular geometries in supramolecular beta-sheet tapes. Such geometries have been observed in different self-assembled amyloid systems (based on either natural or synthetic peptides) for which the beta-sheet tapes represent the simplest fibrillar aggregates. A coarse-grained model for the beta-sheet tapes is proposed, with chiral degrees of freedom and asymmetrical chemical properties, which provides a quantitative characterization of the structural transitions. A quantitative connection is established between the molecular properties and the elastic parameters of the supramolecular tapes. (c) 2008 American Institute of Physics.

  • Item type:Article
    ID code:35681
    Dates:
    Date
    Event
    12 May 2008
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:08 Nov 2011 11:58
    Last modified:11 Nov 2024 10:00
    URI:https://strathprints.strath.ac.uk/id/eprint/35681
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