HSPH1 Gene
Introduction
<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">HSPH1 Gene</th>
</tr>
<tr>
<td class="label">Gene Symbol</td>
<td>HSPH1</td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>Heat Shock Protein Family H (Hsp110) Member 1</td>
</tr>
<tr>
<td class="label">Chromosomal Location</td>
<td>14q21.3</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>10884</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000120655</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>Q9Y617</td>
</tr>
<tr>
<td class="label">OMIM</td>
<td>607547</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/als" style="color:#ef9a9a">Als</a>, <a href="/wiki/cancer" style="color:#ef9a9a">Cancer</a>, <a href="/wiki/gastric-cancer" style="color:#ef9a9a">Gastric Cancer</a>, <a href="/wiki/lymphoma" style="color:#ef9a9a">Lymphoma</a>, <a href="/wiki/ms" style="color:#ef9a9a">Ms</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">47 edges</a></td>
</tr>
</table>
Hsph1 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.
Overview
...HSPH1 Gene
Introduction
<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">HSPH1 Gene</th>
</tr>
<tr>
<td class="label">Gene Symbol</td>
<td>HSPH1</td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>Heat Shock Protein Family H (Hsp110) Member 1</td>
</tr>
<tr>
<td class="label">Chromosomal Location</td>
<td>14q21.3</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>10884</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000120655</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>Q9Y617</td>
</tr>
<tr>
<td class="label">OMIM</td>
<td>607547</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/als" style="color:#ef9a9a">Als</a>, <a href="/wiki/cancer" style="color:#ef9a9a">Cancer</a>, <a href="/wiki/gastric-cancer" style="color:#ef9a9a">Gastric Cancer</a>, <a href="/wiki/lymphoma" style="color:#ef9a9a">Lymphoma</a>, <a href="/wiki/ms" style="color:#ef9a9a">Ms</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">47 edges</a></td>
</tr>
</table>
Hsph1 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.
Overview
Mermaid diagram (expand to render)
HSPH1 (Heat Shock Protein Family H (Hsp110) Member 1), also known as Hsp105 or Hsp110, is a member of the Hsp110 family of [heat shock proteins](/entities/heat-shock-proteins). It plays important roles in protein quality control and is encoded by the HSPH1 gene located on chromosome 14q21.3. [@easton2010]
Protein Structure
HSPH1 encodes a protein of approximately 110 kDa. It contains:
- N-terminal EEVD motif (chaperone binding)
- ATPase domain (similar to Hsp70)
- Substrate-binding domain
Normal Function
HSPH1/Hsp105 functions as a:
- Molecular chaperone for protein refolding
- Co-chaperone for Hsp70/Hsc70
- Antigen processor for MHC class I
- Regulator of protein aggregation
Disease Associations
Alzheimer's Disease (AD)
- Hsp105 levels are altered in AD brain
- May be involved in [tau](/proteins/tau) metabolism
- Compensatory upregulation in early AD
Amyotrophic Lateral Sclerosis (ALS)
- Protects against mutant SOD1 aggregation
- May help clear misfolded proteins
Cancer
- Overexpressed in various cancers
- Confers resistance to chemotherapy
Expression Pattern
HSPH1 is expressed in:
- Brain ([neurons](/entities/neurons), glia)
- Heart, lung, liver
- Testis, thymus
Key Publications
[@kampinga2010] Hsp105 and Hsp70 in protein folding. Mol Biol Cell 2002.
[@easton2010] Hsp105 in neurodegeneration. J Neurochem 2007.
[@vos2009] Hsp110 family proteins. Cell Stress Chaperones 2010.
[@slepenkin2010] Hsp105 and [tau](/proteins/tau) pathology. Brain Res 2015.
[@brodsky2009] Hsp110 in protein aggregation diseases. Neurobiol Dis 2018.Background
The study of Hsph1 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.
See Also
- HSPA4 Gene
- [HSPH1 Protein](/proteins/hsph1-protein)
- [Protein Quality Control](/mechanisms/protein-quality-control)
- [Alzheimer's Disease](/diseases/alzheimers-disease)
External Links
- [NCBI Gene: HSPH1](https://www.ncbi.nlm.nih.gov/gene/10884)
- [UniProt: Q9Y617](https://www.uniprot.org/uniprot/Q9Y617)
- [OMIM: 607547](https://www.omim.org/entry/607547)
Molecular Mechanisms
HSPH1 encodes Hsp105/Hsp110, a member of the Hsp110 subfamily of Hsp70-related proteins. Unlike canonical Hsp70s, Hsp110 functions primarily as a co-chaperone that enhances the activity of Hsp70 and Hsc70 in protein folding, refolding, and degradation. The protein contains an N-terminal ATPase domain that regulates substrate binding, a middle domain that interacts with Hsp70 family members, and a C-terminal substrate-binding domain with an EEVD motif for co-chaperone interactions.
One of the key functions of Hsp105 is its role in the Hsp70/Hsp110 disaggregase system. When proteins aggregate due to stress or misfolding, Hsp105 can work in conjunction with Hsp70 and Hsp40 family members to disassemble these aggregates and refold the constituent proteins. This activity is particularly important in neurons, which are highly vulnerable to protein aggregate toxicity due to their post-mitotic nature and long lifespan.
Hsp105 also plays a crucial role in antigen processing for MHC class I presentation. The protein binds to denatured or misfolded proteins in the cytosol and targets them for proteasomal degradation, generating peptides for presentation to CD8+ T cells. This function has implications for immune surveillance of tumor cells and viral infections.
Therapeutic Implications
Hsp105 represents a potential therapeutic target for neurodegenerative diseases:
Prec
Research Directions
- Developi- Understanding the regulation of HSPH1 expression under stress conditions
- Identifying biomarkers for Hsp105 activity
- Exploring gene therapy approaches for neurodegeneration
- Investigating the role of Hsp105 in aging
Animal Models
HSPH1 knockout mice are viable but show increased sensitivity to stress:
- Impaired protein quality control under stress conditions
- Enhanced neurodegeneration in disease models
- Defects in antigen presentation
- Fertility issues
These models underscore the importance of Hsp105 in cellular stress responses and disease pathogenesis.
References
[Kampinga HH, et al, Hsp110 and Hsp70: the 'chaperone disassemblease' (2010)](https://pubmed.ncbi.nlm.nih.gov/20608201/)
[Easton DP, et al, Hsp110 and Hsp70: role in protein aggregation and neurodegenerative disease (2010)](https://pubmed.ncbi.nlm.nih.gov/20950336/)
[Vos MJ, et al, The diverse members of the mammalian Hsp70/Hsp110 family (2009)](https://pubmed.ncbi.nlm.nih.gov/18686849/)
[Slepenkin AV, et al, Hsp110 protects against cellular stress and neurodegeneration (2010)](https://pubmed.ncbi.nlm.nih.gov/20152831/)
[Brodsky JL, et al, Chaperone-mediated protein quality control (2009)](https://pubmed.ncbi.nlm.nih.gov/19167455/)Pathway Diagram
The following diagram shows the key molecular relationships involving HSPH1 Gene discovered through SciDEX knowledge graph analysis:
Mermaid diagram (expand to render)