165 results found
    1. Physics of Living Systems
    2. Structural Biology and Molecular Biophysics

    Nanoresolution real-time 3D orbital tracking for studying mitochondrial trafficking in vertebrate axons in vivo

    Fabian Wehnekamp et al.
    The ability to follow single objects in 3D in a living organism with high spatiotemporal resolution opens new possibilities for quantitative biophysical studies of complex systems in their physiological context.
    1. Physics of Living Systems

    Spatial control of neuronal metabolism through glucose-mediated mitochondrial transport regulation

    Anamika Agrawal et al.
    A quantitative analysis of glucose-dependent transport regulation indicates that mitochondrial accumulation in regions of high nutrient availability can enhance metabolism in neuronal axons under physiologically relevant conditions.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Cation selectivity of the presequence translocase channel Tim23 is crucial for efficient protein import

    Niels Denkert et al.
    Channel characteristics of the presequence translocation pore have a direct impact on protein import into the mitochondrial matrix.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Tim29 is a novel subunit of the human TIM22 translocase and is involved in complex assembly and stability

    Yilin Kang et al.
    A novel and metazoan-specific protein, Tim29, is identified as a subunit of the human TIM22 complex and shown to function in the assembly of hTim22 and facilitate contacts with the TOM complex.
    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. Biochemistry and Chemical Biology
    2. Cell Biology

    Sec17/Sec18 act twice, enhancing membrane fusion and then disassembling cis-SNARE complexes

    Hongki Song et al.
    Sec17 (αSNAP) and Sec18 (NSF) are shown to act twice, to promote fusion per se and to recycle SNAREs after fusion.
    1. Cell Biology
    2. Neuroscience

    The interactome of the copper transporter ATP7A belongs to a network of neurodevelopmental and neurodegeneration factors

    Heather S Comstra et al.
    The ATP7A interactome is the first comprehensive view of putative Menkes disease neurodegeneration mechanisms.
    1. Plant Biology

    A chloroplast retrograde signal, 3’-phosphoadenosine 5’-phosphate, acts as a secondary messenger in abscisic acid signaling in stomatal closure and germination

    Wannarat Pornsiriwong et al.
    Molecular signals from chloroplasts can synergistically interact with the plant hormone, abscisic acid (ABA), to regulate non-canonical signaling pathways mediating fundamental cellular processes including stomatal closure, seed dormancy and germination.
    1. Cell Biology
    2. Developmental Biology

    Genetic screen in Drosophila muscle identifies autophagy-mediated T-tubule remodeling and a Rab2 role in autophagy

    Naonobu Fujita et al.
    Analyses of a developmentally regulated Drosophila myofiber remodeling program provide insight into induced autophagy required for T-tubule membrane reorganization, and uncover a conserved Rab2 role in autophagosome-lysosome fusion.
    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.

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