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John Crum

Researcher at University of California, San Diego

Publications -  21
Citations -  1763

John Crum is an academic researcher from University of California, San Diego. The author has contributed to research in topics: Synaptic vesicle & Synapse. The author has an hindex of 18, co-authored 21 publications receiving 1630 citations. Previous affiliations of John Crum include University of California, Berkeley & Scripps Research Institute.

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Fission and uncoating of synaptic clathrin-coated vesicles are perturbed by disruption of interactions with the SH3 domain of endophilin.

TL;DR: It is suggested that the SH3 domain of endophilin participates in both fission and uncoating and that it may be a key component of a molecular switch that couples the fission reaction to un coating.
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Synaptic Vesicle Populations in Saccular Hair Cells Reconstructed by Electron Tomography

TL;DR: The presence of omega profiles on the plasma membrane around active zones, in the same locations as coated pits and coated vesicles labeled with an extracellular marker, suggests that local membrane recycling may contribute to the three- to 14-fold greater abundance of vesicle in the cytoplasm near synapses than in nonsynaptic regions.
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Depolarization Redistributes Synaptic Membrane and Creates a Gradient of Vesicles on the Synaptic Body at a Ribbon Synapse

TL;DR: In this paper, electron tomography of frog saccular hair cells was used to reconstruct presynaptic ultrastructure at synapses specialized for sustained transmitter release, showing that synapse vesicles at inhibited synapses were abundant in the cytoplasm and covered the synaptic body at high density.
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NF-M is an essential target for the myelin-directed "outside-in" signaling cascade that mediates radial axonal growth.

TL;DR: Gene replacement has been used to produce mice expressing normal levels of the three neurofilament subunits, but which are deleted in the known phosphorylation sites within either NF-M or within both NF-H, revealing that the tail domain ofNF-M, with seven KSP motifs, is an essential target for the myelination-dependent outside-in signaling cascade that determines axonal caliber and conduction velocity of motor axons.
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Direct Restriction of Virus Release and Incorporation of the Interferon-Induced Protein BST-2 into HIV-1 Particles

TL;DR: It is suggested that the incorporation of BST-2 into viral envelopes underlies its broad restrictive activity, whereas its relative exclusion from virions and sites of viral assembly by proteins such as HIV-1 Vpu may provide viral antagonism of restriction.