Arrb2 — Arrestin Beta 2 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
| Arrestin Beta 2 | |
|---|---|
| Gene Symbol | ARRB2 |
| Full Name | Arrestin beta 2 (beta-arrestin 2) |
| Chromosome | 17p13.1 |
| NCBI Gene ID | 410 |
| OMIM | 107941 |
| Ensembl ID | ENSG00000141480 |
| UniProt ID | P35610 |
| Associated Diseases | Parkinson's Disease, Drug Addiction |
ARRB2 (Arrestin Beta 2), also known as beta-arrestin 2, is a ubiquitously expressed arrestin protein that regulates G protein-coupled receptor (GPCR) signaling and trafficking. ARRB2 plays essential roles in receptor desensitization, internalization, and downstream signaling via non-G protein pathways. In the brain, ARRB2 modulates dopaminergic, adrenergic, and opioid receptor signaling affecting behavior, cognition, and pain perception. ARRB2 is a therapeutic target for various conditions including heart failure, obesity, and addiction.
ARRB2 encodes arrestin beta 2, a critical regulator of GPCR signaling. Unlike ARRB1, it is essential for receptor desensitization and internalization. Beta-arrestin 2 also acts as a signaling scaffold, activating MAPK cascades and regulating gene transcription.
Widely expressed in brain, particularly in striatum and cortex. Important for dopaminergic signaling.
| Disease | Variants | Inheritance | Mechanism |
|---|---|---|---|
| Parkinson's Disease | Risk variants | Complex | Dopamine receptor regulation |
| Drug addiction | Variants | Complex | Reward pathway dysregulation |
The study of Arrb2 — Arrestin Beta 2 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.