761 results found
    1. Structural Biology and Molecular Biophysics

    Structural mapping of oligomeric intermediates in an amyloid assembly pathway

    Theodoros K Karamanos et al.
    Solution NMR provides structural and kinetic information about oligomers on pathway to amyloid fibrils that are precisely structured but not cytotoxic.
    1. Immunology and Inflammation
    2. Structural Biology and Molecular Biophysics

    Properdin oligomers adopt rigid extended conformations supporting function

    Dennis V Pedersen et al.
    Combining electron microscopy and solution scattering demonstrated that properdin oligomers adopt extended rigid and well-defined conformations that are integral to the biological function of this complement regulator.
    1. Biochemistry and Chemical Biology

    Ataxin-1 oligomers induce local spread of pathology and decreasing them by passive immunization slows Spinocerebellar ataxia type 1 phenotypes

    Cristian A Lasagna-Reeves et al.
    Building on previous work (Lasagna-Reeves et al., 2015) it is shown that polyglutamine ATXN1 oligomers propagate locally in SCA1 mice, and that passive immunotherapy targeting soluble oligomers can lead to an improvement in motor coordination and a modest increase in life span.
    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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Allosteric modulation in monomers and oligomers of a G protein-coupled receptor

    Rabindra V Shivnaraine et al.
    Allosteric modulation in the M2 muscarinic receptor derives from a mix of interactions within and between the protomers of an oligomer.
    1. Biochemistry and Chemical Biology
    2. Neuroscience

    Somatostatin binds to the human amyloid β peptide and favors the formation of distinct oligomers

    Hansen Wang et al.
    The cyclic neuropeptide somatostatin binds to human Aβ1-42 through an interface that critically relies on a specific tryptophan, thereby blocking the propensity of Aβ to aggregate, a critical step in the pathobiology of Alzheimer's disease.
    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

    Structural diversity of oligomeric β-propellers with different numbers of identical blades

    Evgenia Afanasieva et al.
    A protein fragment forms different folded structures when amplified to different copy numbers within a single polypeptide chain.
    1. Biochemistry and Chemical Biology

    Random-sequence genetic oligomer pools display an innate potential for ligation and recombination

    Hannes Mutschler et al.
    Random sequence RNA pools display an innate capacity for ligation and recombination, enabling them to “bootstrap” themselves towards higher compositional, informational and structural complexity.
    1. Biochemistry and Chemical Biology

    Breakage of the oligomeric CaMKII hub by the regulatory segment of the kinase

    Deepti Karandur et al.
    Activation and autophosphorylation of CaMKII releases the regulatory segment, which can then bind to and destabilize the hub assembly by trapping large fluctuations in the hub architecture.

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