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Structural basis of synaptic vesicle assembly promoted by α-synuclein
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Structural basis of synaptic vesicle assembly promoted by α-synuclein
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Journal Article
Structural basis of synaptic vesicle assembly promoted by α-synuclein
2016
Overview
α-synuclein (αS) is an intrinsically disordered protein whose fibrillar aggregates are the major constituents of Lewy bodies in Parkinson’s disease. Although the specific function of αS is still unclear, a general consensus is forming that it has a key role in regulating the process of neurotransmitter release, which is associated with the mediation of synaptic vesicle interactions and assembly. Here we report the analysis of wild-type αS and two mutational variants linked to familial Parkinson’s disease to describe the structural basis of a molecular mechanism enabling αS to induce the clustering of synaptic vesicles. We provide support for this ‘double-anchor’ mechanism by rationally designing and experimentally testing a further mutational variant of αS engineered to promote stronger interactions between synaptic vesicles. Our results characterize the nature of the active conformations of αS that mediate the clustering of synaptic vesicles, and indicate their relevance in both functional and pathological contexts.
α-synuclein, a protein associated to Parkinson's disease, is involved in synaptic vesicle interaction and assembly. Here, the authors use NMR spectroscopy and super-resolution microscopy to unveil the nature and molecular mechanism of α-synuclein-mediated synaptic vesicle clustering.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
