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- W2788600103 abstract "Synaptic vesicle exocytosis relies on the tethering of release ready vesicles close to voltage-gated Ca 2+ channels and specific lipids at the future site of fusion. This enables rapid and efficient neurotransmitter secretion during presynaptic depolarization by an action potential. Extensive research has revealed that this tethering is mediated by an active zone, a protein dense structure that is attached to the presynaptic plasma membrane and opposed to postsynaptic receptors. Although roles of individual active zone proteins in exocytosis are in part understood, the molecular mechanisms that hold the protein scaffold at the active zone together and link it to the presynaptic plasma membrane have remained unknown. This is largely due to redundancy within and across scaffolding protein families at the active zone. Recent studies, however, have uncovered that ELKS proteins, also called ERC, Rab6IP2 or CAST, act as active zone scaffolds redundant with RIMs. This redundancy has led to diverse synaptic phenotypes in studies of ELKS knockout mice, perhaps because different synapses rely to a variable extent on scaffolding redundancy. In this review, we first evaluate the need for presynaptic scaffolding, and we then discuss how the diverse synaptic and non-synaptic functional roles of ELKS support the hypothesis that ELKS provides molecular scaffolding for organizing vesicle traffic at the presynaptic active zone and in other cellular compartments." @default.
- W2788600103 created "2018-03-06" @default.
- W2788600103 creator A5043615331 @default.
- W2788600103 creator A5091240761 @default.
- W2788600103 date "2018-02-01" @default.
- W2788600103 modified "2023-10-17" @default.
- W2788600103 title "ELKS active zone proteins as multitasking scaffolds for secretion" @default.
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