Abstract:
:In the central nervous system, most synapses show a fast mode of neurotransmitter release known as synchronous release followed by a phase of asynchronous release, which extends over tens of milliseconds to seconds. Synapsin II (SYN2) is a member of the multigene synapsin family (SYN1/2/3) of synaptic vesicle phosphoproteins that modulate synaptic transmission and plasticity, and are mutated in epileptic patients. Here we report that inhibitory synapses of the dentate gyrus of Syn II knockout mice display an upregulation of synchronous neurotransmitter release and a concomitant loss of delayed asynchronous release. Syn II promotes γ-aminobutyric acid asynchronous release in a Ca(2+)-dependent manner by a functional interaction with presynaptic Ca(2+) channels, revealing a new role in synaptic transmission for synapsins.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Medrihan L,Cesca F,Raimondi A,Lignani G,Baldelli P,Benfenati Fdoi
10.1038/ncomms2515subject
Has Abstractpub_date
2013-01-01 00:00:00pages
1512issn
2041-1723pii
ncomms2515journal_volume
4pub_type
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