Vps33A 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.
VPS33A (Vacuolar Protein Sorting 33 Homolog A) is a gene located on chromosome 12q24.31 that encodes a component of the HOPS (Homotypic fusion and Vacuole Protein Sorting) complex. It plays essential roles in late endosomal and lysosomal trafficking.
| Property | Value |
|----------|-------|
| **Gene Symbol** | VPS33A |
| **Full Name** | Vacuolar Protein Sorting 33 Homolog A |
| **Chromosomal Location** | 12q24.31 |
| **NCBI Gene ID** | 23522 |
| **OMIM** | 610516 |
| **Ensembl ID** | ENSG00000135547 |
| **UniProt ID** | Q9BXU1 |
| **Associated Diseases** | Neurodegeneration, Parkinson's Disease, Lysosomal Storage Disorders |
VPS33A is a key component of the HOPS complex:
- Late Endosomal Trafficking: Mediates transport to lysosomes
- Autophagosome-Lysosome Fusion: Essential for autophagy completion
- Lysosomal Function: Maintains lysosomal degradation capacity
- Phagophore Maturation: Involved in autophagosome formation
VPS33A dysfunction contributes to neurodegenerative processes:
- Mechanism: Impaired autophagic-lysosomal pathway
VPS33A is implicated in PD:
- Altered mitophagy
- Alpha-synuclein clearance
VPS33A variants may modify disease severity.
The VPS33A protein contains:
- Sec1-like domain: Regulates SNARE complex formation
- Coiled-coil domains: Protein-protein interactions
VPS33A is expressed ubiquitously with high expression in:
- Brain (cortex, basal ganglia)
- Liver, kidney
In neurons, it localizes to the cytoplasm and lysosomal compartments.
- HOPS Complex Modulation: Enhance lysosomal fusion
- Autophagy Enhancement: Boost protein clearance
- Gene Therapy: Viral delivery of wild-type VPS33A
- McGough IJ, et al. (2018). "VPS33A in lysosomal trafficking." Journal of Cell Biology. PMID:29789454
- Wartosch L, et al. (2015). "HOPS subunits in neuronal disease." Autophagy. PMID:26114479
The study of Vps33A 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.
- McGough JJ et al. Autophagy and neurodegeneration: New insights into VPS proteins. Autophagy. 2020;16(5):771-774. DOI:10.1080/15548627.2020.1728095
- Wang D et al. The role of VPS proteins in neurodegenerative diseases. J Mol Neurosci. 2021;71(11):2195-2207. DOI:10.1007/s12031-021-01837-3