Core Concepts
The long tail variant of Dynamin 1xA interacts with Endophilin A1 through a newly identified binding site, regulating ultrafast endocytosis at synapses.
Abstract
Dynamin 1 (Dyn1) has two splice variants, xA and xB, with unique C-terminal extensions. Dyn1xA accelerates vesicle fission during ultrafast endocytosis by binding to Endophilin A. The interaction is regulated by phosphorylation and determines specificity for ultrafast endocytosis. Mutations disrupting the interaction cause mislocalization of Dyn1xA along axons and stalled endocytic pits on the plasma membrane. The study reveals a novel binding site for Endophilin A in the long tail extension of Dyn1xA, essential for ultrafast endocytosis at synapses.
Stats
Dynamin 1xA accelerates vesicle fission during ultrafast endocytosis.
Mutations disrupting the interaction cause mislocalization of Dyn1xA along axons.
The study reveals a novel binding site for Endophilin A in the long tail extension of Dyn1xA.
Quotes
"The specificity for ultrafast endocytosis is defined by the phospho-regulated interaction of Endophilin A through a newly identified site of Dyn1xA’s long tail."
"Endophilin A binds to a specific PRM near phosphobox-2 with higher affinity than its previously known site."