5,989 results found
    1. Cell Biology

    Fusion pore regulation by cAMP/Epac2 controls cargo release during insulin exocytosis

    Alenka Guček et al.
    Live cell imaging shows that the cAMP-sensor Epac2, a target of major antidiabetic drugs, is central to fusion pore control during insulin granule exocytosis.
    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.
    1. Neuroscience

    CAPS-1 promotes fusion competence of stationary dense-core vesicles in presynaptic terminals of mammalian neurons

    Margherita Farina et al.
    Stationary dense-core vesicles depend on the CAPS-1 protein to fuse with the presynaptic membrane.
    1. Genetics and Genomics

    A large gene family in fission yeast encodes spore killers that subvert Mendel’s law

    Wen Hu et al.
    Two members of a large fission yeast (Schizosaccharomyces pombe) gene family are shown to act as spore killers that enhance their own transmission into progenies by impeding the maturation of spores not inheriting them.
    1. Cell Biology
    2. Neuroscience

    The SNAP-25 linker supports fusion intermediates by local lipid interactions

    Ahmed Shaaban et al.
    The SNAP-25 linker acts as a functional component of SNARE complexes, initially facilitating SNARE interactions and later promoting fusion triggering and pore evolution by local membrane contacts.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Electron tomography visualization of HIV-1 fusion with target cells using fusion inhibitors to trap the pre-hairpin intermediate

    Mark S Ladinsky et al.
    Visualization of HIV-1 fusion by trapping the prehairpin intermediate.
    1. Cell Biology

    Exportin Crm1 is repurposed as a docking protein to generate microtubule organizing centers at the nuclear pore

    Xun X Bao et al.
    Microtubule nucleation from the nuclear envelope in fission yeast involves repurposing of nuclear export proteins for a non-export-related function, docking cytoplasmic proteins at nuclear pore complexes.
    1. Neuroscience

    Optical detection of three modes of endocytosis at hippocampal synapses

    Natali L Chanaday, Ege T Kavalali
    Single synaptic vesicle imaging shows that kinetically distinct endocytic pathways are differentially regulated by calcium and temperature, and influence the fidelity of synaptic vesicle protein retrieval.
    1. Neuroscience

    v-SNARE transmembrane domains function as catalysts for vesicle fusion

    Madhurima Dhara et al.
    Structural flexibility of the synaptobrevin-2 transmembrane domain promotes membrane fusion.
    1. Biochemistry and Chemical Biology

    A distinct tethering step is vital for vacuole membrane fusion

    Michael Zick, William T Wickner
    Rigorous assays of membrane fusion show that a distinct tethering step is required for lumenal compartment mixing in a manner that extends beyond simply increasing the amount of total trans-SNARE complex.

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