GRIN2C Gene - Glutamate Ionotropic Receptor NMDA Type Subunit 2C
Introduction <table class="infobox infobox-gene">
Grin2C Gene Glutamate Ionotropic Receptor Nmda Type Subunit 2C is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
[@nmda]
Overview GRIN2C encodes the NR2C (GluN2C) [NMDA](/entities/nmda-receptor) receptor subunit, forming calcium-permeable ion channels with unique pharmacological and physiological properties. The gene is located on chromosome 17q25.1 and encodes a 1,218 amino acid protein. NR2C-containing NMDA receptors are predominantly expressed in subcortical structures. [@kainate]
Function NR2C-containing NMDA receptors exhibit: [@excitotoxicity]
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GRIN2C Gene - Glutamate Ionotropic Receptor NMDA Type Subunit 2C
Introduction <table class="infobox infobox-gene">
Grin2C Gene Glutamate Ionotropic Receptor Nmda Type Subunit 2C is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
[@nmda]
Overview GRIN2C encodes the NR2C (GluN2C) [NMDA](/entities/nmda-receptor) receptor subunit, forming calcium-permeable ion channels with unique pharmacological and physiological properties. The gene is located on chromosome 17q25.1 and encodes a 1,218 amino acid protein. NR2C-containing NMDA receptors are predominantly expressed in subcortical structures. [@kainate]
Function NR2C-containing NMDA receptors exhibit: [@excitotoxicity]
Reduced magnesium sensitivity : Altered voltage dependenceSlow deactivation kinetics : Extended channel open timesCalcium permeability : Important for signaling cascadesPhencyclidine insensitivity : Distinct pharmacological profileThese receptors mediate:
Synaptic plasticity in cerebellar and thalamic circuits
Sensory processing, particularly auditory pathways
Motor coordination through basal ganglia modulation
Developmental plasticity in the cerebellum
Disease Associations
Alzheimer's Disease (AD)
GRIN2C expression reduced in AD cerebellum
Loss of NR2C-containing receptors affects cerebellar plasticity
May contribute to motor and coordination deficits
Therapeutic modulation explored for cognitive effects
Parkinson's Disease (PD)
Altered NMDA receptor composition in PD models
NR2C function affects striatal plasticity
Contributes to levodopa-induced dyskinesias
NMDA antagonists modulate motor symptoms
Schizophrenia
GRIN2C genetic variants linked to schizophrenia risk
Altered receptor function affects glutamatergic signaling
May contribute to cognitive deficits
NMDA receptor modulators in clinical trials
Ataxia
NR2C knockout mice show ataxic phenotype
Cerebellar long-term depression impaired
Motor learning deficits observed
Channel represents therapeutic target
Hypoxic-Ischemic Injury
NR2C-containing receptors mediate vulnerability
Calcium influx through these channels contributes to damage
Protective effects of NR2C antagonists
Expression Pattern GRIN2C shows highest expression in:
Cerebellar granule cells
Thalamic relay [neurons](/entities/neurons)
Olfactory bulb
Basal ganglia (striatum, globus pallidus)
Superior colliculus
Spinal cord dorsal horn
Molecular Mechanisms
Channel Assembly
Forms heterotetrameric receptors with GluN1
Co-assembles with other NR2 subunits in some neurons
Alternative splicing generates variants
PDZ domain interactions anchor at synapses
Signaling Pathways
Calcium influx activates CaMKII
Coupling to MAPK/ERK pathway
CREB-mediated gene expression
Synaptic plasticity mechanisms
Regulation
Phosphorylation by src family kinases
Glycine/D-serine as co-agonists required
Membrane trafficking regulated by MAGUK proteins
Receptor internalization and recycling
Therapeutic Targeting
NMDA Receptor Modulators
Ketamine : Non-competitive antagonistMemantine : Low-affinity voltage-dependent blockerD-cycloserine : Partial agonist at glycine siteNR2C-Selective Approaches
ifenprodil : NR2B-selective antagonistCIQ : NR2C/D-selective positive modulator (experimental)CERC-610 : NR2C-selective antagonistResearch Directions
Allosteric modulators with subunit specificity
Gene therapy for GRIN2C mutations
Targeted delivery to specific brain regions
Combination approaches with other NMDA subunits
Key Publications
PMID: 8453271 (https://pubmed.ncbi.nlm.nih.gov/8453271/) - "Cloning and functional expression of the NR2C NMDA receptor subunit"PMID: 10349842 (https://pubmed.ncbi.nlm.nih.gov/10349842/) - "NR2C-containing NMDA receptors in cerebellar plasticity"PMID: 15992772 (https://pubmed.ncbi.nlm.nih.gov/15992772/) - "Altered NMDA receptor composition in neurodegenerative diseases"PMID: 18981471 (https://pubmed.ncbi.nlm.nih.gov/18981471/) - "NMDA receptor subunits as therapeutic targets"PMID: 25629780 (https://pubmed.ncbi.nlm.nih.gov/25629780/) - "GRIN2C variants in psychiatric disorders"
See Also
[NMDA Receptors](/entities/nmda-receptors)
[Glutamatergic Signaling](/mechanisms/glutamatergic-signaling)
[Calcium Signaling](/mechanisms/calcium-signaling)mechanisms/calcium-signaling-dysregulation)
[Synaptic Plasticity](/mechanisms/synaptic-plasticity)
[Cerebellar Ataxia](/diseases/cerebellar-ataxia)
[Alzheimer's Disease](/diseases/alzheimers-disease)
[Parkinson's Disease](/diseases/parkinsons-disease)
External Links
[NCBI Gene: GRIN2C](https://www.ncbi.nlm.nih.gov/gene/2905)
[UniProt: Q8TCU5](https://www.uniprot.org/uniprot/Q8TCU5)
[OMIM: 138254](https://www.omim.org/entry/138254)
[GeneCards: GRIN2C](https://www.genecards.org/cgi-bin/carddisp.pl?gene=GRIN2C)
Background The study of Grin2C Gene Glutamate Ionotropic Receptor Nmda Type Subunit 2C has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
References
[Unknown, - Glutamate receptors in neurodegeneration (n.d.)](https://pubmed.ncbi.nlm.nih.gov/26437361/)
[Unknown, - NMDA receptor signaling (n.d.)](https://pubmed.ncbi.nlm.nih.gov/25997342/)
[Unknown, - DNA repair in brain (n.d.)](https://pubmed.ncbi.nlm.nih.gov/24668245/)
[Unknown, - Kainate receptors in CNS (n.d.)](https://pubmed.ncbi.nlm.nih.gov/25009184/)
[Unknown, - Excitotoxicity mechanisms (n.d.)](https://pubmed.ncbi.nlm.nih.gov/26245252/) Show full description