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. In the presence of CACNG4 or CACNG7 or CACNG8, shows resensitization which is characterized by a delayed accumulation of current flux upon continued application of glutamate.
Specificity
Natural and recombinant Mouse Glutamate receptor 2
Subcellular Location
Cell membrane Multi-pass membrane protein Endoplasmic reticulum membrane Multi-pass membrane protein Cell junction synapse postsynaptic cell membrane Multi-pass membrane protein Interaction with CACNG2, CNIH2 and CNIH3 promotes cell surface expression.
Homotetramer or heterotetramer of pore-forming glutamate receptor subunits. Tetramers may be formed by the dimerization of dimers. May interact with MPP4. Forms a ternary complex with GRIP1 and CSPG4. Interacts with GRIP1 and GRIP2. Isoform 1, but not isoform 3, interacts with PICK1/PRKCABP. Interacts with GRIA1 and SYNDIG1. Interacts with LRFN1 (By similarity). Found in a complex with GRIA1, GRIA3, GRIA4, CNIH2, CNIH3, CACNG2, CACNG3, CACNG4, CACNG5, CACNG7 and CACNG8. Interacts with CACNG5.