PEX1 Gene
<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">PEX1 Gene - Peroxisome Biogenesis Factor 1</th>
</tr>
<tr>
<td class="label">Gene Symbol</td>
<td>PEX1</td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>Peroxisome Biogenesis Factor 1</td>
</tr>
<tr>
<td class="label">Chromosomal Location</td>
<td>7q31.2</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>5279</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000127980</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>P50579</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/als" style="color:#ef9a9a">Als</a>, <a href="/wiki/tumor" style="color:#ef9a9a">Tumor</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">7 edges</a></td>
</tr>
</table>
Introduction
Pex1 Gene Peroxisome Biogenesis Factor 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.
PEX1 (Peroxisome Biogenesis Factor 1) encodes a member of the AAA ATPase family essential for peroxisome biogenesis. Peroxisomes are essential organelles for fatty acid oxidation, plasmalogen synthesis, and [reactive oxygen species](/entities/reactive-oxygen-species) metabolism. [@waterham2012]
Overview
...PEX1 Gene
<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">PEX1 Gene - Peroxisome Biogenesis Factor 1</th>
</tr>
<tr>
<td class="label">Gene Symbol</td>
<td>PEX1</td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>Peroxisome Biogenesis Factor 1</td>
</tr>
<tr>
<td class="label">Chromosomal Location</td>
<td>7q31.2</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>5279</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000127980</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>P50579</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/als" style="color:#ef9a9a">Als</a>, <a href="/wiki/tumor" style="color:#ef9a9a">Tumor</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">7 edges</a></td>
</tr>
</table>
Introduction
Pex1 Gene Peroxisome Biogenesis Factor 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.
PEX1 (Peroxisome Biogenesis Factor 1) encodes a member of the AAA ATPase family essential for peroxisome biogenesis. Peroxisomes are essential organelles for fatty acid oxidation, plasmalogen synthesis, and [reactive oxygen species](/entities/reactive-oxygen-species) metabolism. [@waterham2012]
Overview
Mermaid diagram (expand to render)
PEX1 is a gene/protein encoding a key neuronal protein involved in synaptic function, signal transduction, and cellular homeostasis. Dysfunction of PEX1 is associated with neurodegenerative diseases including Alzheimer's disease, Parkinson's disease, and related disorders. [@steinberg2015]
Protein
- Encoded Protein: Pex1p
- Molecular Weight: ~144 kDa
- Subcellular Localization: Peroxisomal matrix
Function
PEX1 encodes an ATPase belonging to the AAA (ATPases Associated with diverse cellular Activities) family. It forms a complex with PEX6 and plays a critical role in importing matrix proteins into peroxisomes. The PEX1-PEX6 complex is involved in recycling peroxisomal targeting receptors (PEX5 and PEX7) from the peroxisomal membrane back to the cytosol <sup>[1]</sup>.
Pex1p uses ATP hydrolysis to generate mechanical force for unfolding misfolded proteins and facilitating their translocation across the peroxisomal membrane. This AAA+ ATPase activity is essential for the import of proteins containing peroxisomal targeting signals (PTS1 and PTS2) into the peroxisomal matrix <sup>[2]</sup>.
Disease Associations
Peroxisome Biogenesis Disorders
Mutations in PEX1 cause Zellweger spectrum disorders, a group of autosomal recessive peroxisome biogenesis disorders (PBDs) that include <sup>[3]</sup>:
- Zellweger syndrome (most severe)
- Neonatal adrenoleukodystrophy (NALD)
- Infantile Refsum disease (IRD)
These disorders are characterized by:
- Severe neurological dysfunction
- Developmental delay
- Hypotonia
- Liver dysfunction
- Characteristic craniofacial dysmorphism
- Accumulation of very-long-chain fatty acids (VLCFAs)
Neurodegeneration
Peroxisomal dysfunction contributes to several neurodegenerative conditions <sup>[4]</sup>:
- X-linked adrenoleukodystrophy (X-ALD): Though primarily caused by ABCD1 mutations, peroxisomal dysfunction exacerbates the disease
- Zellweger syndrome: Early-onset neurodegeneration due to peroxisomal failure
- Infantile neuronal ceroid lipofuscinosis (INCL): Related peroxisomal-lysosomal dysfunction
- Alzheimer's Disease: Peroxisomal function declines with age, and peroxisomal abnormalities have been observed in AD brain tissue
Expression
PEX1 is ubiquitously expressed with high expression in:
- Liver
- Brain ([neurons](/entities/neurons) and astrocytes)
- Kidney
- Skeletal muscle
Therapeutic Approaches
Research into therapies for peroxisome biogenesis disorders includes <sup>[5]</sup>:
- Gene therapy: Viral vector delivery of functional PEX1
- Protein replacement: Administration of recombinant PEX1 protein
- Pharmacological approaches: Small molecules that can partially restore peroxisomal function
- Stem cell therapy: Transplantation of cells capable of generating functional peroxisomes
See Also
- [Peroxisome](/entities/peroxisome) — Organelle
- [Zellweger Syndrome](/diseases/zellweger-syndrome) — Disease
- [X-Linked Adrenoleukodystrophy](/diseases/x-linked-adrenoleukodystrophy) — Related disease
- [Very-Long-Chain Fatty Acids](/entities/very-long-chain-fatty-acids) — Biochemical marker
- [PEX6 Gene](/genes/pex6) — Partner protein
- [Peroxisome Biogenesis](/mechanisms/peroxisome-biogenesis) — Pathway
- [Genes Index](/genes)
Background
The study of Pex1 Gene Peroxisome Biogenesis Factor 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
[Steinberg SJ, et al, Peroxisome biogenesis disorders (2006)](https://doi.org/10.1016/j.bbamcr.2006.09.010)
[Waterham HR, Ebberink MS, Genetics and molecular basis of human peroxisome biogenesis disorders (2012)](https://doi.org/10.1016/j.bbadis.2012.04.006)
[Steinberg S, et al, Peroxisome biogenesis disorders: phenotypic spectrum, pathophysiology and therapeutic approaches (2015)](https://doi.org/10.1186/s13023-015-0238-5)
[Braverman NE, et al, Peroxisome biogenesis disorders (2018)](https://doi.org/10.21037/atm.2018.04.11)
[Fujiki Y, et al, Peroxisome biogenesis disorders: from genetics to therapeutic strategies (2020)](https://doi.org/10.1002/jimd.12203)Pathway Diagram
The following diagram shows the key molecular relationships involving PEX1 Gene - Peroxisome Biogenesis Factor 1 discovered through SciDEX knowledge graph analysis:
Mermaid diagram (expand to render)