Journal
NEURON
Volume 32, Issue 2, Pages 289-300Publisher
CELL PRESS
DOI: 10.1016/S0896-6273(01)00467-6
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Funding
- NINDS NIH HHS [R01 NS029051, NS21624, NS29051] Funding Source: Medline
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We have examined the roles of Hsc70 and auxilin in the uncoating of clathrin-coated vesicles (CCVs) during neuronal endocytosis. We identified two peptides that inhibit the ability of Hsc70 and auxilin to uncoat CCVs in vitro. When injected into nerve terminals, these peptides inhibited both synaptic transmission and CCV uncoating. Mutation of a conserved HPD motif within the J domain of auxilin prevented binding to Hsc70 in vitro and injecting this mutant protein inhibited CCV uncoating in vivo, demonstrating that the interaction of auxilin with Hsc70 is critical for CCV uncoating. These studies establish that auxilin and Hsc70 participate in synaptic vesicle recycling in neurons and that an interaction between these proteins is required for CCV uncoating.
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