Synapsin II desynchronizes neurotransmitter release at inhibitory synapses by interacting with presynaptic calcium channels.

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 Commun

journal_title

Nature communications

authors

Medrihan L,Cesca F,Raimondi A,Lignani G,Baldelli P,Benfenati F

doi

10.1038/ncomms2515

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

1512

issn

2041-1723

pii

ncomms2515

journal_volume

4

pub_type

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