NMDAR2B: an NMDA receptor subtype of glutamate-gated ion channels with high calcium permeability and voltage-dependent sensitivity to magnesium. Mediated by glycine. Plays a key role in synaptic plasticity, synaptogenesis, excitotoxicity, memory acquisition and learning. Mediates neuronal functions in glutamate neurotransmission. In concert with DAPK1 at extrasynaptic sites, acts as a central mediator for stroke damage. Its phosphorylation at Ser-1303 by DAPK1 enhances synaptic NMDA receptor channel activity inducing injurious Ca2+ influx through them, resulting in an irreversible neuronal death.
Protein type: Channel, ligand-gated; Membrane protein, integral; Channel, calcium; Membrane protein, multi-pass
Chromosomal Location of Human Ortholog: 12p12
Cellular Component: postsynaptic membrane; synaptic vesicle; neuron projection; cell surface; integral to plasma membrane; dendrite; plasma membrane; cell junction; N-methyl-D-aspartate selective glutamate receptor complex
Molecular Function: protein binding; extracellular-glutamate-gated ion channel activity; zinc ion binding; glycine binding; calcium channel activity; N-methyl-D-aspartate selective glutamate receptor activity
Biological Process: axon guidance; synaptic transmission, glutamatergic; startle response; behavioral fear response; glutamate signaling pathway; in utero embryonic development; regulation of synaptic plasticity; learning; memory; synaptic transmission; detection of mechanical stimulus involved in sensory perception of pain; behavioral response to pain; learning and/or memory; response to ethanol; sensory organ development; suckling behavior; transport; ionotropic glutamate receptor signaling pathway; ephrin receptor signaling pathway; regulation of excitatory postsynaptic membrane potential
Disease: Mental Retardation, Autosomal Dominant 6; Epileptic Encephalopathy, Early Infantile, 27
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