Glul Gene Glutamine Synthetase is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
{{-
| Attribute | Value |
|---|---|
| Gene Symbol | GLUL |
| Gene Name | Glutamine Synthetase |
| Official Full Name | Glutamate-Ammonia Ligase |
| Chromosomal Location | 1q31.3 |
| GRCh38 Coordinates | chr1:182,375,451-182,392,885 |
| NCBI Gene ID | 2785 |
| OMIM ID | 610012 |
| Ensembl ID | ENSG00000135821 |
| UniProt ID | P15104 |
| Gene Family | Glutamine synthetase family |
The GLUL gene encodes glutamine synthetase (GS), a central enzyme in nitrogen metabolism that catalyzes the ATP-dependent synthesis of glutamine from glutamate and ammonia.[1] In the brain, glutamine synthetase is essential for glutamate homeostasis, neurotransmitter recycling, and protection against excitotoxicity. It is a key astroglial marker and is implicated in various neurodegenerative diseases.
Glutamine synthetase catalyzes:[2]
Glutamate + NH3 + ATP → Glutamine + ADP + Pi
Glutamate homeostasis
Ammonia detoxification
Neuroprotection
Glutamine synthetase is implicated in:[3]
| Disease | Role |
|---|---|
| Alzheimer's Disease | Reduced GS in AD brains; impaired glutamate cycling |
| Parkinson's Disease | Astrocytic GS deficiency; excitotoxicity |
| ALS | Motor neuron vulnerability to glutamate toxicity |
| Multiple Sclerosis | Demyelination affects astrocyte function |
| Variant | Effect | Clinical Significance |
|---|---|---|
| Promoter variants | Altered expression | May modify neurodegeneration risk |
| p.R324C | Missense | Rare, possibly pathogenic |
| p.E286K | Missense | Associated with ALS |
GLUL interacts with:
| Approach | Strategy | Status |
|---|---|---|
| Gene therapy | AAV-GLUL delivery | Preclinical |
| Small molecules | GS activators | Research |
| Metabolic modulation | Support glutamine metabolism | In trials |
The study of Glul Gene Glutamine Synthetase 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.
Last updated: March 2026