منابع مشابه
Myosin Learns to Recruit AMPA Receptors
The induction of long-term potentiation (LTP) leads to an increase in the density of AMPA receptors at dendritic spines. New work by Wang et al. (2008) reveals the mechanism by which myosin Vb regulates the intracellular trafficking of AMPA receptors from recycling endosomes to synaptic sites during LTP.
متن کاملMyosin learns to walk.
Recent experiments, drawing upon single-molecule, solution kinetic and structural techniques, have clarified our mechanistic understanding of class V myosins. The findings of the past two years can be summarized as follows: (1) Myosin V is a highly efficient processive motor, surpassing even conventional kinesin in the distance that individual molecules can traverse. (2) The kinetic scheme unde...
متن کاملRetinoic Acid and LTP Recruit Postsynaptic AMPA Receptors Using Distinct SNARE-Dependent Mechanisms
Retinoic acid (RA)-dependent homeostatic plasticity and NMDA receptor-dependent long-term potentiation (LTP), a form of Hebbian plasticity, both enhance synaptic strength by increasing the abundance of postsynaptic AMPA receptors (AMPARs). However, it is unclear whether the molecular mechanisms mediating AMPAR trafficking during homeostatic and Hebbian plasticity differ, and it is unknown how R...
متن کاملAccessories assist AMPA receptors to close pockets
C o m m e n t a r y Stargazin (STZ), the prototypical member of the trans membrane AMPA receptor regulatory protein (TARP) family, can boost AMPA receptor activity to enhance synaptic currents as much as one third. The effects of STZ on microscopic and macroscopic AMPA receptor currents are consistent with a mechanism in which STZ facilitates opening of the AMPA receptor channel. How ever, th...
متن کاملMyosin Vb Mobilizes Recycling Endosomes and AMPA Receptors for Postsynaptic Plasticity
Learning-related plasticity at excitatory synapses in the mammalian brain requires the trafficking of AMPA receptors and the growth of dendritic spines. However, the mechanisms that couple plasticity stimuli to the trafficking of postsynaptic cargo are poorly understood. Here we demonstrate that myosin Vb (MyoVb), a Ca2+-sensitive motor, conducts spine trafficking during long-term potentiation ...
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ژورنال
عنوان ژورنال: Cell
سال: 2008
ISSN: 0092-8674
DOI: 10.1016/j.cell.2008.10.013