1. Long-term potentiation reconstituted with an artificial TARP/PSD-95 complex
- Author
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Ravi, Anagh Sinha, Zeng, Menglong, Chen, Xudong, Sandoval, Gerardo, Diaz-Alonso, Javier, Zhang, Mingjie, and Nicoll, Roger A
- Subjects
Biochemistry and Cell Biology ,Biological Sciences ,Neurosciences ,Genetics ,1.1 Normal biological development and functioning ,Underpinning research ,Disks Large Homolog 4 Protein ,Long-Term Potentiation ,Nuclear Proteins ,Receptors ,AMPA ,Synapses ,Synaptic Transmission ,AMPA receptor trafficking ,AMPAR ,CP: Neuroscience ,GluA1 ,LTP ,MAGUK ,PSD-95 ,TARP ,postsynaptic density ,synaptic transmission ,Medical Physiology ,Biological sciences - Abstract
The critical role of AMPA receptor (AMPAR) trafficking in long-term potentiation (LTP) of excitatory synaptic transmission is now well established, but the underlying molecular mechanism is still uncertain. Recent research suggests that PSD-95 captures AMPARs via an interaction with the AMPAR auxiliary subunits-transmembrane AMPAR regulatory proteins (TARPs). To determine if such interaction is a core minimal component of the AMPAR trafficking and LTP mechanism, we engineered artificial binding partners, which individually were biochemically and functionally dead but which, when expressed together, rescue binding and both basal synaptic transmission and LTP. These findings establish the TARP/PSD-95 complex as an essential interaction underlying AMPAR trafficking and LTP.
- Published
- 2022