13 results found
    1. Biochemistry and Chemical Biology

    Structural insight into guanylyl cyclase receptor hijacking of the kinase–Hsp90 regulatory mechanism

    Nathanael A Caveney, Naotaka Tsutsumi, K Christopher Garcia
    Cryo-EM structures reveal GC-C associates with regulatory heat shock proteins similarly to bona fide protein kinases and this can guide the further development of mGC-targeted therapeutics.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

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

    Ana Crespillo-Casado, Joseph E Chambers ... David Ron
    The notion that the drug-like small molecule Sephin1 protects against protein misfolding by selectively disrupting a cellular phosphatase is refuted.
    1. Cell Biology
    2. Genetics and Genomics

    Resurrecting essential amino acid biosynthesis in mammalian cells

    Julie Trolle, Ross M McBee ... Harris H Wang
    Mammalian cells were engineered to synthesize valine, a metabolic capacity that had been lost from the lineage of higher eukaryotes for >500 million years.
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    1. Cell Biology

    A concerted mechanism involving ACAT and SREBPs by which oxysterols deplete accessible cholesterol to restrict microbial infection

    David B Heisler, Kristen A Johnson ... Arun Radhakrishnan
    An essential role for ACAT in conferring 25HC-mediated protection against bacterial and viral infection has been uncovered.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    AMPylation matches BiP activity to client protein load in the endoplasmic reticulum

    Steffen Preissler, Cláudia Rato ... David Ron
    Attaching a molecule of adenosine mono-phosphate (AMP) to the BiP protein at threonine 518 regulates its chaperone activity in the endoplasmic reticulum.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Autoinhibition of Munc18-1 modulates synaptobrevin binding and helps to enable Munc13-dependent regulation of membrane fusion

    Ewa Sitarska, Junjie Xu ... Josep Rizo
    Biophysical and functional data strongly support the notion that Munc18-1 acts as a template to assemble the neuronal SNARE complex, and that inhibition of this activity underlies diverse forms of regulation of neurotransmitter release.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Functional synergy between the Munc13 C-terminal C1 and C2 domains

    Xiaoxia Liu, Alpay Burak Seven ... Josep Rizo
    Munc13 C-terminal domains synergize to coordinate synaptic vesicle docking, priming and fusion.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    AMPylation targets the rate-limiting step of BiP’s ATPase cycle for its functional inactivation

    Steffen Preissler, Lukas Rohland ... David Ron
    AMPylation of BiP allosterically interferes with stimulation of its ATPase activity by J-proteins that is required for high affinity substrate binding.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Membrane bridging by Munc13-1 is crucial for neurotransmitter release

    Bradley Quade, Marcial Camacho ... Josep Rizo
    Cryo-electron tomography, reconstitution, and electrophysiological data show that a fundamental function of Munc13-1 is to bridge synaptic vesicles to the presynaptic plasma membrane.
    1. Neuroscience

    Control of neurotransmitter release by two distinct membrane-binding faces of the Munc13-1 C1C2B region

    Marcial Camacho, Bradley Quade ... Christian Rosenmund
    Two different binding modes of the Munc13-1 C­1C2B region govern synaptic vesicle priming and neurotransmitter release probability.

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