Sci. STKE, 30 March 2004
NEUROBIOLOGY Synaptic Vesicle Queue Jumping
During repetitive nerve stimulation, it has been assumed that synaptic vesicles that are mobilized march up to the presynaptic membrane like little soldiers in formation, and that the first ones out are those lying closest to the membrane. Rizzoli and Betz (see Perspective by Rakic) show in frog motor terminals that the vesicles in the "readily releasable pool" (the first ones out) are scattered almost randomly within the nerve terminal. During their movement to the membrane, they pass hundreds of other less mobile vesicles. These privileged vesicles must thus have distinctive properties, perhaps access to cytoskeletal tracks and motors, that less mobile vesicles lack.
Citation: Synaptic Vesicle Queue Jumping. Sci. STKE 2004, tw117 (2004).
Science Signaling. ISSN 1937-9145 (online), 1945-0877 (print). Pre-2008: Science's STKE. ISSN 1525-8882