VPS41 Gene

VPS41 Gene

Introduction

Vps41 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. PMID: 23645161

Overview

VPS41 encodes vacuolar protein sorting 41, a core subunit of the [HOPS complex](/mechanisms/autophagy-lysosomal-dysfunction-pathway) that drives membrane tethering and fusion at the late endosome-lysosome interface.PMID: 23645161PMID: 25460165 In [neurons](/entities/neurons), this fusion step is essential for completing autophagic flux, degrading damaged proteins and organelles, and maintaining axonal and synaptic homeostasis.PMID: 28237161PMID: 28751651 Because neurodegenerative disorders frequently converge on endolysosomal failure, VPS41 has become a mechanistically important gene linking trafficking defects to neuronal vulnerability.PMID: 28237161PMID: 33888565

Gene Information

VPS41 Gene

Introduction

Vps41 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. PMID: 23645161

Overview

VPS41 encodes vacuolar protein sorting 41, a core subunit of the [HOPS complex](/mechanisms/autophagy-lysosomal-dysfunction-pathway) that drives membrane tethering and fusion at the late endosome-lysosome interface.PMID: 23645161PMID: 25460165 In [neurons](/entities/neurons), this fusion step is essential for completing autophagic flux, degrading damaged proteins and organelles, and maintaining axonal and synaptic homeostasis.PMID: 28237161PMID: 28751651 Because neurodegenerative disorders frequently converge on endolysosomal failure, VPS41 has become a mechanistically important gene linking trafficking defects to neuronal vulnerability.PMID: 28237161PMID: 33888565

Gene Information

<div class="infobox infobox-gene">
| Property | Value |
|----------|-------|
| Gene Symbol | VPS41 |
| Full Name | Vacuolar Protein Sorting 41 Homolog |
| Chromosomal Location | 7p14.3 |
| NCBI Gene ID | 27072 |
| OMIM | 602214 |
| Ensembl ID | ENSG00000104067 |
| UniProt ID | O95154 |
| Associated Diseases | Dystonia, neurodevelopmental/neurodegenerative syndromes, lysosomal dysfunction phenotypes |
</div>

Molecular Function and Complex Assembly

VPS41 operates in the HOPS tethering complex with [VPS16](/genes/vps16), [VPS18](/genes/vps18), [VPS33A](/genes/vps33a), VPS11, and VPS39.PMID: 23645161PMID: 25460165 The complex recognizes Rab-positive late endosomal and lysosomal membranes, positions them for fusion, and coordinates productive SNARE-mediated membrane merger.PMID: 23645161PMID: 25460165

A critical assembly feature is the VPS18-VPS41 interaction through C-terminal RING domains, which helps recruit and stabilize VPS41 within human HOPS.PMID: 28289459 This structural logic is important because partial destabilization of HOPS can reduce fusion efficiency without fully abolishing organelle identity, creating chronic "traffic jams" in post-mitotic neurons.PMID: 33888565PMID: 28289459

Role in Autophagy-Lysosomal Flux

[Autophagy](/entities/autophagy) requires stepwise progression from phagophore formation to autophagosome closure and finally lysosomal fusion. VPS41 contributes to the terminal phase, where late autophagosomes fuse with lysosomes for cargo degradation.PMID: 23645161PMID: 28237161 When this step is compromised, cells accumulate undegraded cargo, enlarged endolysosomal compartments, and persistent stress signaling.PMID: 28237161PMID: 28751651

In neurons, defective terminal fusion has outsized consequences because long-lived proteins, synaptic vesicle components, and damaged mitochondria must be continuously cleared over decades.PMID: 28237161PMID: 28751651 This makes VPS41 function directly relevant to pathways discussed in [mitophagy](/mechanisms/mitophagy), [protein aggregation](/mechanisms/protein-aggregation), and [lysosomal dysfunction](/mechanisms/lysosomal-dysfunction).

Disease Associations

VPS41-Related Movement Disorders

Biallelic loss-of-function variants in VPS41 were reported in early-onset dystonia with lysosomal abnormalities, extending the list of neurologic syndromes caused by HOPS-complex disruption.PMID: 32808683 Clinical phenotypes often include developmental motor abnormalities and progressive movement dysfunction, consistent with high neuronal dependence on intact endolysosomal fusion.PMID: 32808683[@van2021a]

Neurodegeneration and Proteostasis Stress

Beyond Mendelian VPS41 disease, the VPS41 node maps onto broader neurodegenerative biology. Endolysosomal bottlenecks are strongly implicated in [Alzheimer's disease](/diseases/alzheimers-disease), [Parkinson's disease](/diseases/parkinsons-disease), [amyotrophic lateral sclerosis](/diseases/amyotrophic-lateral-sclerosis), and [frontotemporal dementia](/diseases/frontotemporal-dementia) through failed proteostasis and inflammatory amplification.PMID: 28237161PMID: 28751651PMID: 33888565

Because HOPS interacts functionally with Rab-mediated trafficking, VPS41 dysfunction can propagate to impaired degradative signaling, defective organelle quality control, and altered lysosome-dependent transcriptional programs.PMID: 33888565[@van2021a]

Mechanistic Links to AD and PD Pathways

In AD-relevant models, inefficient endolysosomal clearance can increase residence time of [APP](/entities/app-protein)-processing intermediates and aggregated proteins, feeding a cycle of stress and impaired clearance.PMID: 28237161PMID: 28751651 In PD-relevant systems, defective autophagosome maturation can reduce turnover of aggregation-prone proteins and damaged mitochondria, increasing vulnerability of dopaminergic neurons with high metabolic demand.PMID: 28237161PMID: 28751651

VPS41 should therefore be viewed as an upstream trafficking control point rather than a disease-specific gene: subtle deficits can tune risk across multiple disorders by shifting the baseline efficiency of neuronal waste clearance.PMID: 33888565[@van2021a]

Therapeutic and Research Implications

Current translational strategies around VPS41 biology focus on pathway-level rescue rather than direct gene-specific drugs. Candidate directions include: PMID: 25460165

Experimentally, VPS41 provides a useful perturbation node for dissecting when autophagic failure becomes irreversible in vulnerable neuronal populations. Integrating VPS41 genotype, lysosomal biomarkers, and imaging-based flux assays may improve patient stratification for therapies targeting the [autophagy-lysosomal system](/mechanisms/autophagy-lysosomal-dysfunction-pathway).PMID: 28237161PMID: 33888565

See Also

• [VPS16 Gene](/genes/vps16)
• [VPS18 Gene](/genes/vps18)
• [VPS33A Gene](/genes/vps33a)
• [Autophagy-Lysosomal Dysfunction Pathway](/mechanisms/autophagy-lysosomal-dysfunction-pathway)
• [Mitophagy](/mechanisms/mitophagy)

Background

The study of Vps41 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.

External Links

• [PubMed](https://pubmed.ncbi.nlm.nih.gov/) - Biomedical literature
• [Alzheimer's Disease Neuroimaging Initiative](https://adni.loni.usc.edu/) - Research data
• [Allen Brain Atlas](https://brain-map.org/) - Brain gene expression data

References