Rapid neuronal excitation within the CNS is mediated by the interactions of receptors with their respective neurotransmitters, such as glutamate. Glutamate has a diverse array of receptors that are categorized into two distinct groups: ionotropic and metabotropic. Ionotropic receptors are ligand-gated channels and can be subdivided into two classes: NMDA and AMPA receptors. AMPA receptors are composed of four homologous subunits (GluR1-4) that differentially combine to form a variety of receptor subtypes. Interactions of the subunits with cytoplasmic proteins mediate the transmission of extracellular signals. GRIP (Glutamate Receptor Interacting Protein) specifically interacts with the C-terminus of the GluR2 subunit. GRIP lacks a catalytic domain, but contains seven PDZ domains which are motifs that mediate protein-protein interactions. Since only the fourth and fifth PDZ domains are utilized in interaction with GluR2, it is thought that the remaining PDZ domains interact with other unidentified proteins. Therefore, GRIP functions as an adaptor that links AMPA receptors to cytoskeletal and/or signaling molecules and, in turn, clusters them at the synapse.
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注意事项：
1.Since applications vary, each investigator should titrate the reagent to obtain optimal results.
2.Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
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