133 results found
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structure of the bifunctional secretin complex of Thermus thermophilus

    Edoardo D'Imprima et al.
    The pilus extrusion/DNA uptake system of Thermus thermophilus contains a 13-mer of the 757-residue PilQ protein and a tightly bound protein outside the outer membrane with a role in DNA binding.
    1. Structural Biology and Molecular Biophysics

    Structure of a type IV pilus machinery in the open and closed state

    Vicki AM Gold et al.
    Electron cryo-tomography reveals a huge conformational change in the secretin domain of the type IV pilus machinery that occurs when the channel opens for pilus extrusion.
    1. Structural Biology and Molecular Biophysics

    Functional roles of Mg2+ binding sites in ion-dependent gating of a Mg2+ channel, MgtE, revealed by solution NMR

    Tatsuro Maruyama et al.
    Nuclear magnetic resonance analysis revealed the structural and dynamical changes in MgtE during the channel closure caused by the cooperative Mg2+-binding, which had remained undescribed only by a static crystal structure.
    1. Structural Biology and Molecular Biophysics

    Molecular architecture of the 90S small subunit pre-ribosome

    Qi Sun et al.
    The nearly complete architecture of the gigantic 90S precursor of small ribosomal subunit is determined by cryo-EM.
    1. Cell Biology

    IFT trains in different stages of assembly queue at the ciliary base for consecutive release into the cilium

    Jenna L Wingfield et al.
    Multimegadalton intraflagellar transport (IFT) trains assemble by sequential recruitment of IFT subcomplexes from the cell body to the ciliary basal bodies and tubulin, the main IFT cargo, is loaded briefly before trains depart.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Structures of TorsinA and its disease-mutant complexed with an activator reveal the molecular basis for primary dystonia

    F Esra Demircioglu et al.
    High resolution structures of the essential human AAA+ ATPase TorsinA and its disease mutant in complex with an activator reveal details of the interaction that will guide drug design and further functional characterization.
    1. Structural Biology and Molecular Biophysics

    Mechanisms of ribosome stalling by SecM at multiple elongation steps

    Jun Zhang et al.
    Nascent regulatory peptides tune the translation rate through a continuous, dynamic reshaping of the functional center of the ribosome.
    1. Evolutionary Biology

    Robust and accurate prediction of residue–residue interactions across protein interfaces using evolutionary information

    Sergey Ovchinnikov et al.
    Co-evolving residue pairs in the different components of a protein complex almost always make contact across the protein–protein interface, thus providing powerful restraints for the modeling of protein complexes.
    1. Evolutionary Biology

    Antibacterial gene transfer across the tree of life

    Jason A Metcalf et al.
    Parallel horizontal gene transfer has spread a bacteriolytic gene family to all domains of life, and has bestowed a niche-transcending adaptation in recipients that must deploy antibacterial molecules to survive in a bacterial world.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structure and transport mechanism of the sodium/proton antiporter MjNhaP1

    Cristina Paulino et al.
    The inward-open and outward-open structures of MjNhaP1 explain the mechanism of electroneutral sodium-proton antiport across the cell membrane.

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