Synergistic control of neurotransmitter release by different members of the synaptotagmin family.
Synergistic control of neurotransmitter release by different members of the synaptotagmin family.
Curr Opin Neurobiol. 2018 Jun 07;51:154-162
Authors: Volynski KE, Krishnakumar SS
Abstract
Quantal neurotransmitter release at nerve terminals is tightly regulated by the presynaptic Ca2+ concentration. Here, we summarise current advances in understanding how the interplay between presynaptic Ca2+ dynamics and different Ca2+ release sensors shapes action potential-evoked release on a timescale from hundreds of microseconds to hundreds of milliseconds. In particular, we review recent studies that reveal the synergistic roles of the low Ca2+ affinity/fast release sensors synaptotagmins 1, 2 and 9 and the high affinity/slow release sensor synaptotagmin 7 in the regulation of synchronous and asynchronous release and of short-term synaptic plasticity. We also examine new biochemical and structural data and outline a working model that could potentially explain the cooperative roles of different synaptotagmins in molecular terms.
PMID: 29886350 [PubMed - as supplied by publisher]
Source: Current Opinion in Neurobiology - Category: Neurology Authors: Volynski KE, Krishnakumar SS Tags: Curr Opin Neurobiol Source Type: research