The glutamate receptor 1, a homo- or heter0teramer, is an Ionotropic glutamate receptor. L-glutamate acts as an e, Xenopus/Amphibian,citatory neurotransmitter at many synapses in the central nervous system. Binding of the e, Xenopus/Amphibian,citatory 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 glutamate receptor then desensitizes rapidly and enters a transient inactive state, characterized by the presence of bound agonist. Phosphorylation of Ser845 has been linked to synaptic plasticity as well as learning and memory