The role of SNARE proteins in trafficking and function of neurotransmitter transporters.
The SNARE hypothesis of vesicle fusion proposes that a series of protein-protein interactions governs the delivery of vesicles to various membrane targets such as the Golgi network and the plasma membrane. Key players in this process include members of the syntaxin family of membrane proteins. The first member identified in this family, syntaxin 1A, plays an essential role in the docking and fusion of neurotransmitter-containing vesicles to the presynaptic membrane of neurons. Syntaxin 1A and other syntaxin family members have also been shown to interact with, and directly regulate, a variety of ion channels. More recently, the family of plasma membrane neurotransmitter transporters, proteins that function in part to control transmitter levels in brain, have been shown to be direct targets of syntaxin 1A regulation. This regulation involves both the trafficking of transporters as well as the control of ion and transmitter flux through transporters. In this chapter, the functional effects of syntaxin-transporter interactions are reviewed, and how such interactions may regulate neuronal signaling are considered.
Quick
M W
MW
Department of Biological Sciences, University of Southern California, HNB 228, 3641 Watt Way, Los Angeles, CA 90089-2520, USA. mquick@usc.edu
D000818:Animals; D001921:Brain / Q000378:metabolism; D015220:Calcium Channels / Q000378:metabolism; D050485:GABA Plasma Membrane Transport Proteins / Q000378:metabolism*; D006801:Humans; D015640:Ion Channel Gating; D008561:Membrane Fusion; D050479:Neurotransmitter Transport Proteins / Q000378:metabolism*; D017729:Presynaptic Terminals / Q000378:metabolism; D011487:Protein Conformation; D021381:Protein Transport; D050600:SNARE Proteins / Q000737:chemistry / Q000378:metabolism*; D050486:Serotonin Plasma Membrane Transport Proteins / Q000378:metabolism*; D009435:Synaptic Transmission; D050827:Syntaxin 1 / Q000737:chemistry / Q000378:metabolism*
D015220:Calcium Channels; D050485:GABA Plasma Membrane Transport Proteins; D050479:Neurotransmitter Transport Proteins; D050600:SNARE Proteins; D050486:Serotonin Plasma Membrane Transport Proteins; D050827:Syntaxin 1