Grin2b Gene Summary [Rat]

Enables several functions, including beta-catenin binding activity; extracellular ligand-gated monoatomic ion channel activity; and signaling receptor binding activity. Involved in several processes, including cellular response to ketone; learning or memory; and modulation of chemical synaptic transmission. Located in several cellular components, including dendrite; postsynaptic density, intracellular component; and synaptic cleft. Part of NMDA selective glutamate receptor complex. Is active in several cellular components, including hippocampal mossy fiber to CA3 synapse; parallel fiber to Purkinje cell synapse; and synaptic membrane. Used to study attention deficit hyperactivity disorder; cannabis abuse; fetal alcohol spectrum disorder; hyperhomocysteinemia; and transient cerebral ischemia. Biomarker of several diseases, including alcohol use disorder; attention deficit hyperactivity disorder; cognitive disorder (multiple); heroin dependence; and placental insufficiency. Human ortholog(s) of this gene implicated in several diseases, including alcohol use disorder; autosomal dominant intellectual developmental disorder 6; developmental and epileptic encephalopathy 27; neurodegenerative disease (multiple); and nicotine dependence. Orthologous to human GRIN2B (glutamate ionotropic receptor NMDA type subunit 2B). [provided by Alliance of Genome Resources, Jul 2025]

Details

Type
Protein Coding
Official Symbol
Grin2b
Official Name
glutamate ionotropic receptor NMDA type subunit 2B [Source:RGD Symbol;Acc:2738]
Ensembl ID
ENSRNOG00000008766
Bio databases IDs NCBI: 24410 Ensembl: ENSRNOG00000008766
Aliases glutamate ionotropic receptor NMDA type subunit 2B
Synonyms AW490526, DEE27, EIEE27, GluN2B, GluR epsilon 2, GluR ε 2, glutamate ionotropic receptor NMDA type subunit 2B, glutamate receptor, ionotropic, NMDA2B (epsilon 2), glutamate receptor, ionotropic, NMDA2B (ε 2), hNR3, MRD6, NMDAR2B, NMDE2, NR2B, NR3
Species
Rat, Rattus norvegicus
OrthologiesHumanMouse

Protein Domains

A protein domain is a distinct structural or functional region within a protein that can evolve, function, and exist independently of the rest of the protein chain. These domains in rat Grin2b often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • N-methyl D-aspartate receptor 2B3 C-terminus
  • cell adhesion molecule binding
  • G-protein-coupled receptor binding
  • glutamate binding
  • ion channel
  • N-methyl-D-aspartate selective glutamate receptor
  • zinc ion binding
  • cytoplasmic domain
  • glycine binding
  • Type 1 periplasmic binding fold superfamily
  • Type 2 periplasmic binding fold superfamily
  • KKNXN motif
  • tail domain
  • Src phosphorylation site
  • PXXP Class I motif
  • Receptor family ligand binding region
  • protein kinase binding
  • calcium channel
  • beta-catenin binding
  • channel/pore class transporter
  • Ligated ion channel L-glutamate- and glycine-binding site
  • ionotropic glutamate receptor
  • glutamate-gated ion channel
  • extracellular ligand-gated ion channel
  • protein binding
  • receptor binding
  • ionotropic glutamate receptor binding
  • PSD 95 binding domain
  • interleukin-1 receptor binding
  • binding protein
  • neurotransmitter receptor
  • ligand-gated ion channel
  • cytosolic tail domain
  • PXXP motif
  • PDZ binding motif
  • cation channel
  • Bacterial extracellular solute-binding proteins, family 3
  • tyrosine phosphorylation site

Top Findings

The most significant associations for this gene, including commonly observed domains, pathway involvement, and functional highlights based on current data.
disease
  • alcoholism
  • colorectal cancer
  • metastasis
  • dementia
  • schizophrenia
  • depressive disorder
  • anxiety disorder
  • amyotrophic lateral sclerosis
  • essential tremor
  • Huntington disease
regulated by
  • HTT
  • Ca2+
  • (S)-3,5-dihydroxyphenylglycine
  • beta-estradiol
  • LY294002
  • trans-flupentixol
  • allopregnanolone
  • PKC
  • insulin
  • kalirin
regulates
role in cell
  • cell death
  • apoptosis
  • formation in
  • expression in
  • formation
  • phosphorylation in
  • activation in
  • number
  • production in
  • migration

Subcellular Expression

Locations within the cell where the protein is known or predicted to be active, providing insight into its function and cellular context.
  • Plasma Membrane
  • synaptic plasma membrane fractions
  • soluble fraction
  • postsynaptic density (PSD) fractions
  • membrane fraction
  • glutaminergic synapse
  • proximal axon
  • cytoplasmic vesicle membrane
  • organelle
  • Cytoplasm
  • cell surface
  • postsynaptic region
  • cellular membrane
  • vesicles
  • lysosome
  • endoplasmic reticulum membrane
  • presynaptic membrane
  • postsynaptic membrane
  • synaptic membrane
  • dendritic spines
  • synaptic vesicles
  • neurites
  • synaptosomes
  • synapse
  • Z line
  • late endosomes
  • perikaryon
  • dendrites
  • postsynaptic density
  • axon terminals
  • excitatory synapses
  • dendritic branches
  • apical processes
  • vesicle fraction
  • synaptic vesicle fractions
  • synaptosomal fractions

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the rat Grin2b gene, providing context for its role in the cell.

Biological Process

Functions and activities the gene product is involved in
  • regulation of excitatory postsynaptic membrane potential
  • synaptic transmission
  • brain development
  • protein heterotetramerization
  • learning or memory
  • glutamate receptor signaling pathway
  • response to ethanol
  • regulation of neuronal synaptic plasticity
  • regulation of synaptic plasticity
  • positive regulation of excitatory postsynaptic membrane potential
  • long-term synaptic potentiation
  • positive regulation of synaptic transmission, glutamatergic
  • calcium-mediated signaling
  • ionotropic glutamate receptor signaling pathway
  • positive regulation of cysteine-type endopeptidase activity
  • synaptic transmission, glutamatergic

Cellular Component

Where in the cell the gene product is active
  • postsynaptic density
  • late endosome
  • synaptic membrane
  • neuron projection
  • plasma membrane
  • cell surface
  • lysosome
  • endoplasmic reticulum membrane
  • cytoskeleton
  • postsynaptic membrane
  • cytoplasm
  • N-methyl-D-aspartate selective glutamate receptor complex

Molecular Function

What the gene product does at the molecular level
  • zinc ion binding
  • protein binding
  • glutamate-gated calcium ion channel activity
  • glycine binding
  • glutamate binding
  • beta-amyloid binding
  • N-methyl-D-aspartate selective glutamate receptor activity

Gene-Specific Assays for Results You Can Trust

Streamline your workflow with assays designed for this gene. Our targeted dPCR and qPCR assays help you generate meaningful data – efficiently and accurately.