Parkin Deficient Dopaminergic Neurons is an important cell type in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Parkin (PARK2) deficiency causes autosomal recessive juvenile Parkinson's disease (AR-JP). Parkin is an E3 ubiquitin ligase essential for mitophagy, and its loss leads to accumulation of damaged mitochondria and progressive dopaminergic neuron degeneration.
This page provides comprehensive information about the subject's role in neurodegenerative diseases. The subject participates in various molecular pathways and cellular processes relevant to Alzheimer's disease, Parkinson's disease, and related conditions.
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| Database |
ID |
Name |
Confidence |
| Cell Ontology |
CL:0000700 |
dopaminergic neuron |
Medium |
- E3 ubiquitin ligase that tags damaged mitochondria
- Mediates ubiquitination of mitochondrial proteins
- Recruits autophagy receptors (p62, OPTN, NDP52)
- Forms parkin bodies at mitochondrial clusters
- PINK1-dependent recruitment to depolarized mitochondria
- Failure to ubiquitinate damaged mitochondria
- Impaired mitophagy initiation
- Accumulation of dysfunctional mitochondria
- Failed mitochondrial turnover
- Mitochondrial dysfunction cascades to cellular death
- Enlarged and swollen mitochondria
- Reduced cristae density
- Decreased respiratory chain activity (complex I deficiency)
- Increased mitochondrial DNA deletions
- Oxidative stress accumulation
¶ Research Models and Findings
- PARK2 knockout mice with mitochondrial defects
- Drosophila parkin mutants with neurodegeneration
- iPSC-derived neurons from AR-JP patients
- CRISPR-corrected isogenic lines for mechanistic studies