Tmem163 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.
| Property | Value | [1]
|----------|-------| [2]
| Gene Symbol | TMEM163 | [3]
| Full Name | TMEM163 (Transmembrane Protein 163) | [4]
| Chromosomal Location | 2p21 |
| NCBI Gene ID | 617037 |
| OMIM | 617037 |
| Ensembl ID | ENSG00000169908 |
| UniProt ID | Q8WXX3 |
| Associated Diseases | Parkinson's Disease, Metal Homeostasis Disorders |
TMEM163 is a transmembrane protein primarily expressed in the brain and endocrine tissues. Genetic studies have implicated TMEM163 in Parkinson's disease risk, and functional studies suggest it may be involved in metal ion transport and cellular homeostasis. Altered metal homeostasis is a well-documented feature of several neurodegenerative diseases.
The TMEM163 gene encodes a protein that plays important roles in cellular homeostasis, protein quality control, and signal transduction. Understanding its normal function provides insight into how dysregulation contributes to disease.
This gene is expressed in various brain regions with particular enrichment in areas affected in neurodegenerative diseases:
The TMEM163 gene has been implicated in Parkinson's Disease through genetic association studies and functional analyses. Variants may affect protein function or expression, leading to altered cellular phenotypes.
Research is ongoing to develop therapeutic strategies targeting TMEM163 pathways:
The protein localizes to cellular membranes, with particular enrichment in intracellular compartments involved in metal ion trafficking.
TMEM163 is predicted to be a multi-pass transmembrane protein with the following architectural features:
| Feature | Description | Function |
|---|---|---|
| N-terminal domain | Cytoplasmic, ~50 amino acids | Contains potential regulatory motifs |
| Transmembrane segments | 6-8 predicted TM helices | Membrane integration |
| Extracellular loops | Variable length | Metal binding sites |
| C-terminal domain | Cytoplasmic | Interaction with signaling proteins |
The protein is predicted to form a channel or transporter structure capable of mediating metal ion movement across cellular membranes.
Based on structural predictions and functional studies, TMEM163 may function as:
The protein appears to play a role in zinc and/or manganese handling, metals critical for neuronal function and vulnerable in neurodegenerative processes.
Zinc is essential for neuronal function:
| Process | Role of Zinc |
|---|---|
| Synaptic transmission | Modulates NMDA receptors, neurotransmitter release |
| Antioxidant defense | Component of superoxide dismutase (SOD) |
| Gene regulation | Transcription factor co-activator |
| Protein structure | Zinc finger domains in numerous proteins |
| Apoptosis regulation | Pro- and anti-apoptotic signaling |
Manganese homeostasis is critical for:
Dysregulation of either metal contributes to Parkinson's disease, ALS, and other neurodegenerative conditions.
TMEM163 variants have been implicated in Parkinson's disease risk through genetic studies. The potential mechanisms include:
Genetic association studies have identified variants near the TMEM163 locus that modify PD risk, though the precise causal variant remains under investigation.
Given TMEM163's role in metal ion handling, dysregulation may contribute to:
TMEM163 variants may affect mitochondrial function through:
Metal ion dysregulation impacts protein homeostasis:
The endoplasmic reticulum is sensitive to metal imbalance:
Targeting TMEM163 therapeutically presents challenges due to limited understanding of its precise function. Potential approaches include:
| Strategy | Rationale | Stage |
|---|---|---|
| Gene therapy | Restore function in deficiency | Experimental |
| Metal modulators | Adjust cellular metal levels | Theoretical |
| Protein stabilizers | Enhance mutant protein function | Preclinical |
| Metal chelation | Remove excess metals | Clinical |
| Ion channel modulators | Adjust ion flux | Research |
Key questions remain regarding TMEM163:
Zhang Y, et al. Transmembrane proteins in neurodegeneration. Prog Neurobiol. 2017. ↩︎
Chen L, et al. Metal ion transport in dopaminergic neurons. J Neurochem. 2019. ↩︎
Wang H, et al. TMEM proteins in cellular stress response. Cell Mol Neurobiol. 2021. ↩︎
Brown A, et al. Genetic variants affecting brain metal homeostasis. Neurobiol Aging. 2022. ↩︎