GRIA1 Antibody from MyBioSource.com

Description: Glutamate receptors are the predominant excitatory neurotransmitter receptors in the mammalian brain and are activated in a variety of normal neurophysiologic processes. These receptors are heteromeric protein complexes with multiple subunits, each possessing transmembrane regions, and all arranged to form a ligand-gated ion channel. The classification of glutamate receptors is based on their activation by different pharmacologic agonists. This gene belongs to a family of alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionate (AMPA) receptors. Alternatively spliced transcript variants encoding different isoforms have been found for this gene.
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. 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.
Subunit Structure: Homotetramer or heterotetramer of pore-forming glutamate receptor subunits (By similarity). Tetramers may be formed by the dimerization of dimers (PubMed:23739980). Interacts with HIP1 and RASGRF2. Interacts with SYNDIG1 and GRIA2 (By similarity). Interacts with DLG1 (via C-terminus). Interacts with LRFN1. Interacts with PRKG2 (By similarity). Interacts with CNIH2 and CACNG2 (PubMed:20805473). Interacts with CACNG5. Interacts (via C-terminus) with PDLIM4 (via LIM domain); this interaction as well as the interaction of PDLIM4 with alpha-actinin is required for their colocalization in early endosomes. Found in a complex with GRIA2, GRIA3, GRIA4, CNIH2, CNIH3, CACNG2, CACNG3, CACNG4, CACNG5, CACNG7 and CACNG8 (By similarity). Interacts with SNX27 (via PDZ domain); the interaction is required for recycling to the plasma membrane when endocytosed and prevent degradation in lysosomes. Interacts (via PDZ-binding motif) with SHANK3 (via PDZ domain) (By similarity). Interacts with CACNG3; associates GRIA1 with the adaptor protein complex 4 (AP-4) to target GRIA1 to the somatodendritic compartment of neurons (By similarity).
Post-translational Modifications: 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 (By similarity). Phosphorylated at Ser-645. Phosphorylated at Ser-710 by PKC. Phosphorylated at Ser-849 by PKC, PKA and CAMK2. Phosphorylated at Ser-863 by PKC, PKA and PRKG2.
Similarity: The M4 transmembrane segment mediates tetramerization and is required for cell surface expression. Belongs to the glutamate-gated ion channel (TC 1.A.10.1) family. GRIA1 subfamily