Function: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. ,miscellaneous:The postsynaptic actions of Glu are mediated by a variety of receptors that are named according to their selective agonists. This receptor binds AMPA (quisqualate) > glutamate > kainate. ,PTM:Palmitoylated. Depalmitoylated upon glutamate stimulation. Cys-603 palmitoylation leads to Golgi retention and decreased cell surface expression. In contrast , Cys-829 palmitoylation does not affect cell surface expression but regulates stimulation-dependent endocytosis. ,similarity:Belongs to the glutamate-gated ion channel (TC 1.A.10) family. ,subcellular location:Interaction with CACNG2 promotes cell surface expression. ,subunit:Homotetramer or heterotetramer of pore-forming glutamate receptor subunits. Tetramers may be formed by the dimerization of dimers. Interacts with DLG1 via its C-terminus. Interacts with CACNG2 , HIP1 and RASGRF2. ,tissue specificity:Widely expressed in brain. ,
展开内容