GluR5 iso2: Ionotropic glutamate receptor. L-glutamate acts as an excitatory neurotransmitter at many synapses in the central nervous system. Binding of the excitatory neurotransmitter L- glutamate induces a conformation change, leading to the opening of the cation channel, and thereby converts the chemical signal to an electrical impulse. The receptor then desensitizes rapidly and enters a transient inactive state, characterized by the presence of bound agonist. May be involved in the transmission of light information from the retina to the hypothalamus. Belongs to the glutamate-gated ion channel (TC 1.A.10.1) family. GRIK1 subfamily. 2 isoforms of the human protein are produced by alternative splicing.
Protein type: Channel, ligand-gated; Membrane protein, multi-pass; Membrane protein, integral
Chromosomal Location of Human Ortholog: 21q22.11
Cellular Component: presynaptic membrane; postsynaptic membrane; kainate selective glutamate receptor complex; integral to plasma membrane; dendrite; plasma membrane; cell junction
Molecular Function: extracellular-glutamate-gated ion channel activity; kainate selective glutamate receptor activity
Biological Process: nervous system development; synaptic transmission, glutamatergic; regulation of synaptic transmission, glutamatergic; central nervous system development; glutamate signaling pathway; positive regulation of synaptic transmission, GABAergic; negative regulation of synaptic transmission, glutamatergic; synaptic transmission; regulation of inhibitory postsynaptic membrane potential; behavioral response to pain; ionotropic glutamate receptor signaling pathway; transport; adult behavior; regulation of excitatory postsynaptic membrane potential; positive regulation of gamma-aminobutyric acid secretion
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