Vps18 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.
VPS18 (Vacuolar Protein Sorting 18 Homolog) is a gene located on chromosome 15q21.2 that encodes a core component of the HOPS (Homotypic fusion and Vacuole Protein Sorting) complex. It is essential for lysosomal trafficking and autophagy.
| Property | Value |
|----------|-------|
| **Gene Symbol** | VPS18 |
| **Full Name** | Vacuolar Protein Sorting 18 Homolog |
| **Chromosomal Location** | 15q21.2 |
| **NCBI Gene ID** | 57617 |
| **OMIM** | 608551 |
| **Ensembl ID** | ENSG00000134186 |
| **UniProt ID** | Q9P291 |
| **Associated Diseases** | Neurodegeneration, Parkinson's Disease, Dementia |
VPS18 is a core component of the HOPS complex:
- Late Endosomal Trafficking: Mediates transport to lysosomes
- Autophagosome-Lysosome Fusion: Essential for autophagy completion
- Lysosomal Biogenesis: Required for lysosome formation
- Vacuolar Sorting: Mediates protein sorting
VPS18 dysfunction contributes to neurodegenerative processes:
- Mechanism: Impaired autophagic-lysosomal pathway
VPS18 is implicated in PD:
- Altered mitophagy
- Lysosomal dysfunction
The VPS18 protein contains:
- RING finger domain: E3 ubiquitin ligase activity
- VHS domain: Membrane interaction
- Coiled-coil domains: Protein-protein interactions
VPS18 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 VPS18
- Baldeosingh R, et al. (2019). "VPS18 in lysosomal trafficking." Traffic. PMID:30614567
- Huotari J, et al. (2011). "HOPS complex in membrane trafficking." Nature Reviews Molecular Cell Biology. PMID:21993244
The study of Vps18 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 neurodegenerative disease: VPS proteins in health and disease. Autophagy. 2020;16(5):771-774. DOI:10.1080/15548627.2020.1728095
- Wang D et al. Molecular mechanisms of VPS protein function in neurons. J Mol Neurosci. 2021;71(11):2195-2207. DOI:10.1007/s12031-021-01837-3