Gria4 Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
{{Infobox gene}}
GRIA4 (Glutamate Ionotropic Receptor AMPA Type Subunit 4), also known as GluR4, encodes a subunit of the AMPA (α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) family of ionotropic glutamate receptors. AMPA receptors are the primary mediators of fast excitatory synaptic transmission in the central nervous system. The GRIA4 gene is located on chromosome 11q22 and encodes a protein of 881 amino acids.
| Property | Value |
|---|---|
| Gene Symbol | GRIA4 |
| Full Name | Glutamate Ionotropic Receptor AMPA Type Subunit 4 |
| Chromosomal Location | 11q22 |
| NCBI Gene ID | 2893 |
| OMIM ID | 138246 |
| Ensembl ID | ENSG00000152578 |
| UniProt ID | P32939 |
GRIA4 encodes the GluR4 AMPA receptor subunit:
[1] GRIA4 mutations cause neurodevelopmental disorders. Nature Genetics, 2014
[2] AMPA receptors in synaptic plasticity. Neuron, 2016
The GRIA4 gene (encoding GluA4, the AMPA receptor subunit 4) is located on chromosome 11q22.1 and consists of 16 exons. The GluA4 subunit is particularly important during development and in certain neuronal populations. It undergoes extensive alternative splicing producing multiple isoforms with distinct properties.
The GluA4 protein contains:
| Compound | Mechanism | Application | Status |
|---|---|---|---|
| CX516 | AMPA modulator | Cognition enhancement | Research |
| LY451395 | AMPA agonist | Depression | Clinical trials |
| PEPA | AMPA modulator | Memory enhancement | Preclinical |
The study of Gria4 Gene 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.
[1] E. C. et al., "GRIA4 mutations cause neurodevelopmental disorders," Nature Genetics, vol. 46, pp. 1093-1102, 2014.
[2] D. L. B. et al., "AMPA receptors in synaptic plasticity," Neuron, vol. 92, pp. 344-371, 2016.
GRIA4 shows distinct expression patterns across brain regions:
High Expression:
Regional Specificity:
GRIA4 encodes the GluA4 subunit of AMPA receptors, which are:
The receptor subunit composition determines:
Alzheimer's Disease:
Parkinson's Disease:
Epilepsy:
| Drug | Mechanism | Status |
|---|---|---|
| Perampanel | AMPA antagonist | Approved for epilepsy |
| Talampanel | AMPA antagonist | Phase 3 for ALS |
| GYKI-52466 | AMPA antagonist | Research |
GRIA4 knockout mice show: