FUNDC1 Gene
<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">FUNDC1 — FUN14 Domain Containing 1</th>
</tr>
<tr>
<td class="label">
Gene Symbol</td>
<td>FUNDC1</td>
</tr>
<tr>
<td class="label">
Full Name</td>
<td>FUN14 Domain Containing 1</td>
</tr>
<tr>
<td class="label">
Chromosomal Location</td>
<td>5q31.2</td>
</tr>
<tr>
<td class="label">
NCBI Gene ID</td>
<td>87178</td>
</tr>
<tr>
<td class="label">
Ensembl ID</td>
<td>ENSG00000077616</td>
</tr>
<tr>
<td class="label">
UniProt ID</td>
<td>Q8IWV1</td>
</tr>
<tr>
<td class="label">
OMIM</td>
<td>606467</td>
</tr>
<tr>
<td class="label">
Gene Type</td>
<td>Protein coding</td>
</tr>
<tr>
<td class="label">
Transcript Length</td>
<td>2,247 bp</td>
</tr>
<tr>
<td class="label">
Protein Length</td>
<td>156 amino acids</td>
</tr>
<tr>
<td class="label">Tissue</td>
<td>Expression Level</td>
</tr>
<tr>
<td class="label">Heart</td>
<td>Very high</td>
</tr>
<tr>
<td class="label">Brain</td>
<td>High</td>
</tr>
<tr>
<td class="label">Skeletal muscle</td>
<td>High</td>
</tr>
<tr>
<td class="label">Liver</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Kidney</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Lung</td>
<td>Low</td>
</tr>
<tr>
<td class="label">Partner</td>
<td>Type</td>
</tr>
<tr>
<td class="label">LC3/GABARAP</td>
<td>[
...FUNDC1 Gene
<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">FUNDC1 — FUN14 Domain Containing 1</th>
</tr>
<tr>
<td class="label">
Gene Symbol</td>
<td>FUNDC1</td>
</tr>
<tr>
<td class="label">
Full Name</td>
<td>FUN14 Domain Containing 1</td>
</tr>
<tr>
<td class="label">
Chromosomal Location</td>
<td>5q31.2</td>
</tr>
<tr>
<td class="label">
NCBI Gene ID</td>
<td>87178</td>
</tr>
<tr>
<td class="label">
Ensembl ID</td>
<td>ENSG00000077616</td>
</tr>
<tr>
<td class="label">
UniProt ID</td>
<td>Q8IWV1</td>
</tr>
<tr>
<td class="label">
OMIM</td>
<td>606467</td>
</tr>
<tr>
<td class="label">
Gene Type</td>
<td>Protein coding</td>
</tr>
<tr>
<td class="label">
Transcript Length</td>
<td>2,247 bp</td>
</tr>
<tr>
<td class="label">
Protein Length</td>
<td>156 amino acids</td>
</tr>
<tr>
<td class="label">Tissue</td>
<td>Expression Level</td>
</tr>
<tr>
<td class="label">Heart</td>
<td>Very high</td>
</tr>
<tr>
<td class="label">Brain</td>
<td>High</td>
</tr>
<tr>
<td class="label">Skeletal muscle</td>
<td>High</td>
</tr>
<tr>
<td class="label">Liver</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Kidney</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Lung</td>
<td>Low</td>
</tr>
<tr>
<td class="label">Partner</td>
<td>Type</td>
</tr>
<tr>
<td class="label">LC3/GABARAP</td>
<td>[Autophagy](/entities/autophagy) protein</td>
</tr>
<tr>
<td class="label">ULK1</td>
<td>Kinase</td>
</tr>
<tr>
<td class="label">Drp1</td>
<td>GTPase</td>
</tr>
<tr>
<td class="label">PINK1</td>
<td>Kinase</td>
</tr>
<tr>
<td class="label">PARKIN</td>
<td>E3 ligase</td>
</tr>
<tr>
<td class="label">Mfn1/2</td>
<td>GTPase</td>
</tr>
<tr>
<td class="label">TOM complex</td>
<td>Translocase</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/ad" style="color:#ef9a9a">AD</a>, <a href="/wiki/ali" style="color:#ef9a9a">ALI</a>, <a href="/wiki/als" style="color:#ef9a9a">ALS</a>, <a href="/wiki/aging" style="color:#ef9a9a">Aging</a>, <a href="/wiki/als" style="color:#ef9a9a">Als</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">546 edges</a></td>
</tr>
</table>
Pathway Diagram
Mermaid diagram (expand to render)
Introduction
Fundc1 — Fun14 Domain Containing 1 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Overview
FUNDC1 (FUN14 Domain Containing 1) encodes a mitochondrial outer membrane protein that serves as a receptor for hypoxia-induced mitophagy. It plays critical roles in mitochondrial quality control, cellular stress responses, and has been implicated in Parkinson's disease, Huntington's disease, stroke, and myocardial ischemia[@liu2012].
Protein Structure
FUNDC1 is a mitochondrial outer membrane protein with unique structural features[@liu2012]:
Domain Architecture
- N-terminal region: Cytoplasmic domain containing the LIR (LC3-interacting region) motif
- Transmembrane domain: Single-pass transmembrane helix anchoring protein to outer membrane
- C-terminal region: Interacts with mitochondrial proteins
Key Functional Motifs
- LIR motif: ^Y103xxL^106 - mediates interaction with LC3/GABARAP proteins
- Phosphorylation sites: Serine 17 (phosphorylation regulates mitophagy)
- TOM complex binding site: Interacts with translocase of outer membrane
Biological Functions
Mitophagy Receptor
FUNDC1 is a specific receptor for hypoxia-induced mitophagy[@liu2012]:
Hypoxia sensing: Under low oxygen conditions, FUNDC1 activates mitophagy
LC3 binding: LIR motif recruits autophagosomes via LC3/GABARAP binding
Mitochondrial recruitment: Brings damaged mitochondria to autophagosomes
Selectivity: Specifically targets mitochondria for degradationMitochondrial Quality Control
FUNDC1 regulates mitochondrial dynamics:
- Mitochondrial fission: Coordinates with [Drp1](/proteins/drp1-protein) for fragmentation
- Mitochondrial fusion: Interactions with Mfn1/Mfn2
- Protein turnover: Facilitates degradation of damaged components
Cellular Stress Response
- Hypoxia response: Major regulator of mitophagy under oxygen deprivation
- Oxidative stress: Protects against [ROS](/entities/reactive-oxygen-species)-induced damage
- Metabolic stress: Adapts to nutrient deprivation
Expression Pattern
Brain Distribution
- Cerebral [cortex](/brain-regions/cortex): Neuronal expression
- [Hippocampus](/brain-regions/hippocampus): High in CA1-CA3 regions
- Basal ganglia: Moderate expression
- Substantia nigra: Relevant to PD research
- Cerebellum: Lower expression
Role in Neurodegenerative Diseases
Parkinson's Disease
FUNDC1 is strongly implicated in Parkinson's disease through mitophagy[@wu2014]:
- PINK1/PARKIN pathway: Cross-talk with familial PD genes
- Mitochondrial dysfunction: Common PD pathology
- Dopaminergic neuron survival: Mitophagy protects [neurons](/entities/neurons)
- [α-Synuclein](/proteins/alpha-synuclein) interaction: May affect Lewy body formation
Huntington's Disease
- Mutant [huntingtin](/proteins/huntingtin): Impairs FUNDC1-mediated mitophagy
- Mitochondrial defects: Early event in HD pathogenesis
- Energy metabolism: Critical in high-energy-demand neurons
Stroke/Ischemia
- Hypoxia-induced damage: FUNDC1 activation in ischemic stroke
- Brain injury: Protective mitophagy response
- Therapeutic potential: Enhancing mitophagy may reduce damage
Alzheimer's Disease
- Mitochondrial dysfunction: Early AD pathology
- Amyloid toxicity: FUNDC1 may modulate [Aβ](/proteins/amyloid-beta)-induced damage
- Energy failure: Relevance to neuronal death
Interaction Network
FUNDC1 interacts with:
Signaling Pathways
Regulation by Phosphorylation
- Src kinase: Phosphorylates FUNDC1 (Tyr 18) - inhibits mitophagy
- PGAM5: Dephosphorylates FUNDC1 - promotes mitophagy
- ULK1: Phosphorylates FUNDC1 - initiates mitophagy
Therapeutic Implications
FUNDC1 is a promising therapeutic target for:
Neurodegenerative diseases: Modulating mitophagy for neuroprotection
Stroke: Enhancing protective mitophagy after ischemia
Heart disease: Protecting cardiac mitochondria
Aging: Maintaining mitochondrial qualityKey Publications
Liu L, et al. (2012). "FUNDC1 is a novel mitochondrial outer membrane protein for hypoxia-induced mitophagy." Cell Research. PMID: 22491476(https://pubmed.ncbi.nlm.nih.gov/22491476/).
Wu W, et al. (2014). "FUNDC1 regulates mitophagy in Parkinson's disease." Autophagy. PMID: 24879156(https://pubmed.ncbi.nlm.nih.gov/24879156/).
Zhu Y, et al. (2013). "FUNDC1 interacts with Drp1 to regulate mitochondrial fission." Journal of Molecular Cell Biology. PMID: 23873154(https://pubmed.ncbi.nlm.nih.gov/23873154/).See Also
- [FUNDC1 Protein](/proteins/fundc1-protein) - Protein page
- [Mitophagy](/mechanisms/mitophagy) - Mechanism page
- [Mitochondrial Dynamics](/entities/mitochondrial-dynamics) - Related entity
- [Parkinson's Disease](/diseases/parkinsons-disease) - Disease page
- [Huntington's Disease](/diseases/huntington-disease) - Disease page
- [Hypoxia](/entities/hypoxia) - Related entity
Background
The study of Fundc1 — Fun14 Domain Containing 1 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
[Liu L, et al, (2012) (2012)](https://pubmed.ncbi.nlm.nih.gov/22491476/)
[Wu W, et al, (2014) (2014)](https://pubmed.ncbi.nlm.nih.gov/24879156/)
[Zhu Y, et al, (2013) (2013)](https://pubmed.ncbi.nlm.nih.gov/23873154/)Pathway Diagram
The following diagram shows the key molecular relationships involving FUNDC1 — FUN14 Domain Containing 1 discovered through SciDEX knowledge graph analysis:
Mermaid diagram (expand to render)