Drd3 — Dopamine Receptor D3 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Dopamine Receptor D3 is a The D3 dopamine receptor is a D2-like receptor that plays crucial roles in motor control, reward processing, and cognitive functions. It is predominantly expressed in the limbic system and is a major target for antipsychotic drugs and Parkinson's disease therapeutics.
| Symbol | DR3 |
|---|---|
| Full Name | Dopamine Receptor D3 |
| Chromosomal Location | 3q13.3 |
| NCBI Gene ID | 1818 |
| OMIM | 139251 |
| Ensembl ID | ENSG00000151577 |
| UniProt | P35462 |
The DR3 gene encodes a G protein-coupled receptor that The D3 dopamine receptor is a D2-like receptor that plays crucial roles in motor control, reward processing, and cognitive functions. It is predominantly expressed in the limbic system and is a major target for antipsychotic drugs and Parkinson's disease therapeutics.
This receptor couples to G proteins to activate downstream signaling cascades:
| Disease | Role | Evidence |
|---|---|---|
| Parkinson's disease | Receptor alterations affect dopaminergic signaling | GWAS, postmortem studies |
| Schizophrenia | Altered receptor expression and signaling | Genetic association, PET studies |
| Movement disorders | Receptor polymorphisms affect motor control | Clinical studies |
This receptor is expressed in various brain regions:
Expression data available from Allen Brain Atlas.
The study of Drd3 — Dopamine Receptor D3 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.