213 results found
    1. Biochemistry and Chemical Biology

    Evolution of (p)ppGpp-HPRT regulation through diversification of an allosteric oligomeric interaction

    Brent W Anderson et al.
    The signaling ligand (p)ppGpp regulates the enzyme HPRT across species by binding to a novel class of conserved motif, yet its specificity is allosterically altered through evolution of enzyme oligomerization.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Full length RTN3 regulates turnover of tubular endoplasmic reticulum via selective autophagy

    Paolo Grumati et al.
    Full length RTN3 homodimerization mediates ER tubules fragmentation and their subsequent delivery to lysosome.
    1. Biochemistry and Chemical Biology

    Collagen induces activation of DDR1 through lateral dimer association and phosphorylation between dimers

    Victoria Juskaite et al.
    Ligand binding induces DDR1 kinase activity through recruitment of DDR1 receptors into signalling clusters in which phosphorylation occurs across different dimers.
    1. Structural Biology and Molecular Biophysics
    2. Immunology and Inflammation

    Fluorescence Lifetime Imaging Microscopy reveals rerouting of SNARE trafficking driving dendritic cell activation

    Daniëlle Rianne José Verboogen et al.
    A novel microscopy-based assay shows that dendritic cells encountering pathogenic stimuli form increased complexes of specific SNARE proteins, driving release of large amounts of inflammatory cytokines.
    1. Cell Biology

    Spatiotemporal regulation of autophagy during Caenorhabditis elegans aging

    Jessica T Chang et al.
    Autophagic flux assays in the nematode Caenorhabditis elegans suggest that autophagy decreases during normal aging, whereas long-lived daf-2 and glp-1 mutants maintain autophagic capacity in distinct spatiotemporal-specific manners to extend lifespan.
    1. Cell Biology

    Cell cycle entry triggers a switch between two modes of Cdc42 activation during yeast polarization

    Kristen Witte et al.
    Optogenetic control of Cdc42 activation during polarization of budding yeast demonstrates a cell cycle regulated switch between two distinct modes of positive feedback.
    1. Cell Biology

    The step-wise pathway of septin hetero-octamer assembly in budding yeast

    Andrew Weems, Michael McMurray
    In budding yeast cells, slow monomeric septin GTPase activity and the cytosolic GTP:GDP ratio dictate the relative incorporation of alternative subunits during septin hetero-oligomer assembly, which proceeds by discrete, ordered steps dependent on allostery between interaction interfaces.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    PPP1R15A-mediated dephosphorylation of eIF2α is unaffected by Sephin1 or Guanabenz

    Ana Crespillo-Casado et al.
    The notion that the drug-like small molecule Sephin1 protects against protein misfolding by selectively disrupting a cellular phosphatase is refuted.
    1. Biochemistry and Chemical Biology

    Coupling between the DEAD-box RNA helicases Ded1p and eIF4A

    Zhaofeng Gao et al.
    Ded1p and eIF4A, two RNA helicases that function in eukaryotic translation initiation, interact physically with each other and with the scaffolding protein eIF4G.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    CDK-regulated dimerization of M18BP1 on a Mis18 hexamer is necessary for CENP-A loading

    Dongqing Pan et al.
    The stoichiometry and mechanism of interactions of the Mis18 complex with M18BP1 was analysed to unveil the molecular basis of new CENP-A deposition during the G1 phase of the cell cycle.

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