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    1. Neuroscience

    Loss of Frataxin induces iron toxicity, sphingolipid synthesis, and Pdk1/Mef2 activation, leading to neurodegeneration

    Kuchuan Chen et al.
    In Drosophila, the loss of Frataxin causes iron accumulation in the nervous system, which in turn enhances sphingolipid synthesis and activation of PDK1 and Mef2, which leads to neurodegeneration.
    1. Neuroscience

    Kinesin-1 regulates dendrite microtubule polarity in Caenorhabditis elegans

    Jing Yan et al.
    A cellular motor protein helps to ensure that microtubules are oriented correctly within neuronal dendrites
    1. Cell Biology
    2. Human Biology and Medicine

    Lpcat3-dependent production of arachidonoyl phospholipids is a key determinant of triglyceride secretion

    Xin Rong et al.
    The enzyme Lpcat3 plays a unique role in the incorporation of arachidonic acid into membranes, which is required for the production of lipoproteins.
    1. Microbiology and Infectious Disease

    Determination of host proteins composing the microenvironment of coronavirus replicase complexes by proximity-labeling

    Philip V'kovski et al.
    The molecular microenvironment of coronaviral replicase complexes provides functional and spatial links between conserved cellular processes and viral RNA synthesis, and highlights potential targets for the development of novel antivirals.
    1. Cell Biology

    Genome-wide interrogation of extracellular vesicle biology using barcoded miRNAs

    Albert Lu et al.
    A screen using artificially barcoded, exosomal microRNAs, paired with CRISPR guide RNAs, helped identify new players in multivesicular endosome exocytosis and a role for Wnt signaling.
    1. Cell Biology
    2. Computational and Systems Biology

    Active machine learning-driven experimentation to determine compound effects on protein patterns

    Armaghan W Naik et al.
    In an investigation into the effects of drugs on proteins, an active machine learning algorithm chose which sets of experiments to perform and was able to learn an accurate model of the effects after doing only a fraction of the experiments.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    TORC2-dependent protein kinase Ypk1 phosphorylates ceramide synthase to stimulate synthesis of complex sphingolipids

    Alexander Muir et al.
    TORC2-Ypk1 signaling upregulates flux through the sphingolipid pathway not only by increasing the supply of long-chain base precursors, but also by increasing their use in synthesizing complex sphingolipids.
    1. Cell Biology

    QIL1 is a novel mitochondrial protein required for MICOS complex stability and cristae morphology

    Virginia Guarani et al.
    A comprehensive analysis of the human MICOS complex has identified a novel subunit called QIL1 that is required for cristae junction formation in human cells and Drosophila, through its role in the assembly of the MICOS complex.
    1. Cell Biology

    The GTPase IFT27 is involved in both anterograde and retrograde intraflagellar transport

    Diego Huet et al.
    A small GTPase within the flagellum can participate in the control of transport from the base to the tip of the flagellum, and back again.
    1. Cell Biology

    Ubiquitin turnover and endocytic trafficking in yeast are regulated by Ser57 phosphorylation of ubiquitin

    Sora Lee et al.
    Ser57 phosphorylation regulates ubiquitin homeostasis by inhibiting deubiquitylase-mediated recycling and promoting vacuolar degradation.