5,463 results found
    1. Biochemistry and Chemical Biology

    HOPS recognizes each SNARE, assembling ternary trans-complexes for rapid fusion upon engagement with the 4th SNARE

    Hongki Song et al.
    The tethering complex HOPS employs affinity for each of the 4 SNAREs to catalyze assembly of 3-SNARE intermediates, supporting an immediate burst of membrane fusion triggered by the 4th SNARE.
    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

    COPI mediates recycling of an exocytic SNARE by recognition of a ubiquitin sorting signal

    Peng Xu et al.
    COPI vesicle coat protein recognizes a ubiquitin sorting signal on an exocytic v-SNARE to mediate recycling.
    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
    2. Neuroscience

    Multiple factors maintain assembled trans-SNARE complexes in the presence of NSF and αSNAP

    Eric A Prinslow et al.
    Biophysical analyses indicate that Munc18-1, Munc13-1, synaptotagmin-1 and complexin-1 maintain assembled trans-SNARE complexes in the presence of NSF-alphaSNAP, suggesting that they form part of the primed state of synaptic vesicles.
    1. Neuroscience

    Internal states drive nutrient homeostasis by modulating exploration-exploitation trade-off

    Verónica María Corrales-Carvajal et al.
    A quantitative video tracking analysis reveals that to gain the nutrients they need, flies change their decisions to exploit foods with different nutrient contents and explore the environment according to their internal amino acid and reproductive states.
    1. Developmental Biology
    2. Evolutionary Biology

    Reorganisation of Hoxd regulatory landscapes during the evolution of a snake-like body plan

    Isabel Guerreiro et al.
    Despite their extreme morphologies, snakes display a global regulatory strategy of their Hox genes similar to that implemented by mammals with, however, important modifications in enhancer specificity.
    1. Genetics and Genomics

    Variable prediction accuracy of polygenic scores within an ancestry group

    Hakhamanesh Mostafavi et al.
    The prediction accuracies of polygenic scores in humans vary depending on the characteristics of the samples, as well as based on the study design, within a single ancestry group.
    1. Cell Biology
    2. Plant Biology

    ER assembly of SNARE complexes mediating formation of partitioning membrane in Arabidopsis cytokinesis

    Matthias Karnahl et al.
    SNARE proteins are delivered as complexes already from the endoplasmic reticulum along the secretory pathway to the cell division plane to mediate the formation of the partitioning membrane by vesicle fusion.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Dilation of fusion pores by crowding of SNARE proteins

    Zhenyong Wu et al.
    A few SNARE complexes suffice to fuse membranes, but many more are needed to dilate the nascent fusion pore by molecular crowding for efficient neurotransmitter or hormone release during exocytosis.

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