50 results found
    1. Structural Biology and Molecular Biophysics

    HDX-MS reveals nucleotide-dependent, anti-correlated opening and closure of SecA and SecY channels of the bacterial translocon

    Zainab Ahdash et al.
    Hydrogen-deuterium exchange mass spectrometry reveals nucleotide-driven conformational regulation of Sec protein-channel to help impose directionality for protein transport through the Sec complex.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Ric-8A, a G protein chaperone with nucleotide exchange activity induces long-range secondary structure changes in Gα

    Ravi Kant et al.
    Hydrogen-Deuterium exchange experiments show that Ric-8A induces similar dynamic changes in the structure of Gα as G protein-coupled receptors, yet protects a larger surface of the nucleotide-binding Ras domain.
    1. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    Bacterial flagellar capping proteins adopt diverse oligomeric states

    Sandra Postel et al.
    The first high-resolution structure of a bacterial flagellar cap protein, FliD, reveals new insights into the assembly of bacterial flagella.
    1. Structural Biology and Molecular Biophysics

    Architecture and dynamics of the autophagic phosphatidylinositol 3-kinase complex

    Sulochanadevi Baskaran et al.
    The first three-dimensional structure of the PI3KC3 complex I, which is involved in autophagy, provides a framework for understanding the allosteric regulation of lipid kinase activity.
    1. Biochemistry and Chemical Biology
    2. Computational and Systems Biology

    ATP-induced asymmetric pre-protein folding as a driver of protein translocation through the Sec machinery

    Robin A Corey et al.
    How the process of protein folding may be controlled by the Sec machinery to assist protein transport across membranes.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Structural organization of a major neuronal G protein regulator, the RGS7-Gβ5-R7BP complex

    Dipak N Patil et al.
    Atomic details on structural organization and conformational dynamics of the key regulator of neuronal signaling shed light on its allosteric regulation and role in regulating cellular pathways.
    1. Biochemistry and Chemical Biology

    HDX-MS reveals structural determinants for RORγ hyperactivation by synthetic agonists

    Timothy S Strutzenberg et al.
    Unique methodology was used to generate a large HDX-MS dataset to inform ligand-mediated activation of RORγ, an approach that can be extended to other nuclear receptors with unresolved ligand-dependent activities.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Fusion surface structure, function, and dynamics of gamete fusogen HAP2

    Juan Feng et al.
    Structure, dynamics, and mutation of a gamete fusion protein and comparisons to viral homologues suggest that after trimerization the domain bearing the membrane-inserting fusion loops can pivot with respect to the trimer 3-fold axis.
    1. Structural Biology and Molecular Biophysics
    2. Human Biology and Medicine

    The angiopoietin-like protein ANGPTL4 catalyzes unfolding of the hydrolase domain in lipoprotein lipase and the endothelial membrane protein GPIHBP1 counteracts this unfolding

    Simon Mysling et al.
    Building on previous work (Mysling et al., 2016), it is shown that angiopoietin-like protein 4 (ANGPTL4) inhibits lipoprotein lipase activity by catalyzing the unfolding of its hydrolase domain.
    1. Cell Biology

    A novel mode of capping protein-regulation by twinfilin

    Adam B Johnston et al.
    Twinfilin functions as a pro-capping ligand of capping protein, dynamically competing with inhibitory ligands of capping proteinto control cellular actin assembly.

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