lmmol · Proteins

Glutamate receptor ionotropic, NMDA 2B

UniProt Q13224 Organism Homo sapiens Gene GRIN2B, NMDAR2B

Also known as: GRIN2B, NMDAR2B

Function

Component of N-methyl-D-aspartate (NMDA) receptors (NMDARs) that function as heterotetrameric, ligand-gated cation channels with high calcium permeability and voltage-dependent block by Mg(2+). Participates in synaptic plasticity for learning and memory formation by contributing to the long-term depression (LTD) of hippocampus membrane currents (By similarity). Channel activation requires binding of the neurotransmitter L-glutamate to the GluN2 subunit, glycine or D-serine binding to the GluN1 subunit, plus membrane depolarization to eliminate channel inhibition by Mg(2+). NMDARs mediate simultaneously the potassium efflux and the influx of calcium and sodium (By similarity). Each GluN2 subunit confers differential attributes to channel properties, including activation, deactivation and desensitization kinetics, pH sensitivity, Ca2(+) permeability, and binding to allosteric modulators. 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 (By similarity).

Classification

Family (Pfam)
PF01094 ANF_receptor, PF00060 Lig_chan, PF10613 Lig_chan-Glu_bd, PF10565 NMDAR2_C
InterPro
ANF_lig-bd_rcpt, Glu/Gly-bd, Iono_Glu_rcpt_met, Ionotropic_Glu_rcpt, Iontro_rcpt_C, NMDAR2_C, Peripla_BP_I
Functional cluster
DNA-Directed RNA Polymerase Subunits

Experimental structures · PDB · 27

A predicted model is available from AlphaFold.

Gene Ontology · 44

Disease associations

Drugs targeting this protein · 24

Related proteins · sequence + function similarity

Co-cited proteins · studied together in the literature

Literature · 24 cited papers

A document in the lmmol reference corpus — open public data (UniProt, GO, PDB, the literature graph) rendered as a single cross-linked page. Hover any link to preview its target.