256 results found
    1. Structural Biology and Molecular Biophysics

    Designed α-sheet peptides inhibit amyloid formation by targeting toxic oligomers

    Gene Hopping et al.
    Novel designed alpha-sheet peptides inhibit amyloidosis in two different systems and preferentially bind the toxic oligomer.
    1. Neuroscience

    A native interactor scaffolds and stabilizes toxic ATAXIN-1 oligomers in SCA1

    Cristian A Lasagna-Reeves et al.
    Studies in a mouse model of spinocerebellar ataxia type 1 show that a protein called capicua stabilizes toxic ataxin-1 oligomers offering a possible explanation for regional patterns of neurodegeneration.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Time-resolved studies define the nature of toxic IAPP intermediates, providing insight for anti-amyloidosis therapeutics

    Andisheh Abedini et al.
    Toxic IAPP intermediates have some molecular features that are similar to, and others that are distinct from, toxic species reported for other amyloidogenic polypeptides.
    1. Neuroscience

    Structural rearrangement of amyloid-β upon inhibitor binding suppresses formation of Alzheimer’s disease related oligomers

    Tobias Lieblein et al.
    Monitoring the formation of two distinct arrangements in early amyloid-ß aggregation by mass spectrometry and ion mobility allows determination of the effect of potential drug candidates.
    1. Structural Biology and Molecular Biophysics

    Structure-based discovery of fiber-binding compounds that reduce the cytotoxicity of amyloid beta

    Lin Jiang et al.
    By using structural methods to screen compounds for their ability to interact with amyloid beta, researchers have identified small molecules that stabilize amyloid fibers and reduce the toxic effect of smaller aggregates on cells.
    1. Microbiology and Infectious Disease
    2. Structural Biology and Molecular Biophysics

    Membrane insertion of α-xenorhabdolysin in near-atomic detail

    Evelyn Schubert et al.
    Cryo-EM and X-ray structures of α-xenorhabdolysin in soluble and pore form of Xenorhabdus nematophila give novel insights into the mechanism of action of bi-component α-pore-forming toxins.
    1. Cell Biology

    Spatial sequestration and detoxification of Huntingtin by the ribosome quality control complex

    Junsheng Yang et al.
    A genome-wide screen in yeast reveals that key proteins in ribosome quality control also regulate mutant Huntingtin aggregation and toxicity.
    1. Biochemistry and Chemical Biology
    2. Genetics and Genomics

    Therapeutic genetic variation revealed in diverse Hsp104 homologs

    Zachary M March et al.
    Exploring natural Hsp104 variation reveals unexpected tuning of a passive activity that inhibits aggregation of specific substrates to selectively counter TDP-43 or alpha-synuclein proteotoxicity connected to neurodegenerative disease.
    1. Neuroscience

    Sleep is bi-directionally modified by amyloid beta oligomers

    Güliz Gürel Özcan et al.
    Amyloid beta, the major component of plaques in Alzheimer's disease, acutely and reversibly signals to modulate sleep as a function of oligomeric length, independently of neuronal loss.

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