54 results found
    1. Genetics and Genomics

    Single-amino acid variants reveal evolutionary processes that shape the biogeography of a global SAR11 subclade

    Tom O Delmont et al.
    An in-depth metagenomic analysis of possibly the most abundant and widespread microbial lineage in the surface ocean teases apart evolutionary processes that maintain its genomic heterogeneity and biogeography.
    1. Structural Biology and Molecular Biophysics

    Structural basis for SARM1 inhibition and activation under energetic stress

    Michael Sporny et al.
    Cryo-EM shows that the NADase activity of SARM1 is allosterically inhibited by physiological concentrations of NAD+ that stabilizes an auto-inhibited conformation of SARM1, explaining how NAD+ depletion may inflict neurodegeneration.
    1. Neuroscience

    NMNAT1 inhibits axon degeneration via blockade of SARM1-mediated NAD+ depletion

    Yo Sasaki et al.
    Axonal metabolic flux analysis demonstrates that expression of NMNAT1 blocks axonal degeneration in cultured mouse neurons not by altering NAD+ synthesis, but rather by inhibiting injury-induced, SARM1-dependent NAD+ consumption.
    1. Neuroscience

    SARM1 depletion rescues NMNAT1-dependent photoreceptor cell death and retinal degeneration

    Yo Sasaki et al.
    A mouse model of retinal degeneration reveals a common mechanism for axonal degeneration and photoreceptor cell death and identifies SARM1 as a therapeutic candidate for retinopathies.
    1. Microbiology and Infectious Disease
    2. Plant Biology

    The plant-specific transcription factors CBP60g and SARD1 are targeted by a Verticillium secretory protein VdSCP41 to modulate immunity

    Jun Qin et al.
    Genetic and biochemical analyses reveal a virulence mechanism employed by V. dahliae that involves inhibition of the transcription factor activity of CBP60g and SARD1.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The structure of the COPII transport-vesicle coat assembled on membranes

    Giulia Zanetti et al.
    A structure of the complete, membrane bound, COPII coat solved by sub-tomogram averaging reveals the arrangement of all protein subunits on the membrane and suggests a mechanism for coating heterogeneously-shaped carriers.
    1. Cell Biology
    2. Neuroscience

    MAPK signaling promotes axonal degeneration by speeding the turnover of the axonal maintenance factor NMNAT2

    Lauren J Walker et al.
    Genetic and biochemical analysis reveals that MAPK signaling promotes axon degeneration by modulating the turnover of axon-protective proteins.
    1. Cell Biology

    Association and dissociation between the mitochondrial Far complex and Atg32 regulate mitophagy

    Aleksei Innokentev et al.
    Ppg1-dependent assembly of the mitochondrial Far complex and association/dissociation between the Far complex and Atg32 are crucial determinants for mitophagy regulation in yeast.
    1. Cell Biology

    TANGO1 recruits ERGIC membranes to the endoplasmic reticulum for procollagen export

    António JM Santos et al.
    Building on previous work (Nogueira et al., 2014), we describe a mechanism for the generation of a mega-carrier for the export of bulky procollagen from the endoplasmic reticulum.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Phosphatidylinositol 3-kinase and COPII generate LC3 lipidation vesicles from the ER-Golgi intermediate compartment

    Liang Ge et al.
    Building on previous work (Ge et al., 2013), it is shown that the ER-Golgi intermediate compartment is a platform for the production of COPII vesicles as precursor membranes for the lipidation of LC3, which is an essential step in autophagosome biogenesis.

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