Abstract:Compensatory endocytosis keeps the surface area of secretory cells constant following exocytosis. At chemical synapses, clathrin-independent ultrafast endocytosis maintains such homeostasis. This endocytic pathway is temporally and spatially coupled to exocytosis, initiating within 50 ms at the region immediately next to where vesicles fuse: the active zone. How synaptic vesicle exocytosis induces ultrafast endocytosis is unknown. Here, we demonstrate that actin filaments are enriched in the region surrounding… Show more
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