Staufen2 Protein
Overview
<table class="infobox infobox-protein">
<tr>
<th class="infobox-header" colspan="2">Staufen2 Protein</th>
</tr>
<tr>
<td class="label">Protein Name</td>
<td>Staufen2</td>
</tr>
<tr>
<td class="label">Gene</td>
<td>STAU2</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>Q9NUR2</td>
</tr>
<tr>
<td class="label">Molecular Weight</td>
<td>~63 kDa (isoform-dependent)</td>
</tr>
<tr>
<td class="label">Subcellular Localization</td>
<td>Cytoplasm, Dendrites, RNA granules</td>
</tr>
<tr>
<td class="label">Protein Family</td>
<td>Staufen family, RNA-binding proteins</td>
</tr>
<tr>
<td class="label">Target</td>
<td>Approach</td>
</tr>
<tr>
<td class="label">mRNA transport</td>
<td>Transport enhancers</td>
</tr>
<tr>
<td class="label">Stress granules</td>
<td>Granule modulators</td>
</tr>
<tr>
<td class="label">STAU2 expression</td>
<td>Gene therapy</td>
</tr>
<tr>
<td class="label">Local translation</td>
<td>Synaptic translation modulators</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/als" style="color:#ef9a9a">Als</a>, <a href="/wiki/amyotrophic-lateral-sclerosis" style="color:#ef9a9a">Amyotrophic Lateral Sclerosis</a>, <a href="/wiki/ataxia" style="color:#ef9a9a">Ataxia</a>, <a href="/wiki/dementia" style="color:#ef9a9a">Dementia</a>, <a href="/wiki/frontotemporal-dementia" style="color:#ef9a9a">Frontotemporal Dementia</a></td>
</tr>
<tr>
...Staufen2 Protein
Overview
<table class="infobox infobox-protein">
<tr>
<th class="infobox-header" colspan="2">Staufen2 Protein</th>
</tr>
<tr>
<td class="label">Protein Name</td>
<td>Staufen2</td>
</tr>
<tr>
<td class="label">Gene</td>
<td>STAU2</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>Q9NUR2</td>
</tr>
<tr>
<td class="label">Molecular Weight</td>
<td>~63 kDa (isoform-dependent)</td>
</tr>
<tr>
<td class="label">Subcellular Localization</td>
<td>Cytoplasm, Dendrites, RNA granules</td>
</tr>
<tr>
<td class="label">Protein Family</td>
<td>Staufen family, RNA-binding proteins</td>
</tr>
<tr>
<td class="label">Target</td>
<td>Approach</td>
</tr>
<tr>
<td class="label">mRNA transport</td>
<td>Transport enhancers</td>
</tr>
<tr>
<td class="label">Stress granules</td>
<td>Granule modulators</td>
</tr>
<tr>
<td class="label">STAU2 expression</td>
<td>Gene therapy</td>
</tr>
<tr>
<td class="label">Local translation</td>
<td>Synaptic translation modulators</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/als" style="color:#ef9a9a">Als</a>, <a href="/wiki/amyotrophic-lateral-sclerosis" style="color:#ef9a9a">Amyotrophic Lateral Sclerosis</a>, <a href="/wiki/ataxia" style="color:#ef9a9a">Ataxia</a>, <a href="/wiki/dementia" style="color:#ef9a9a">Dementia</a>, <a href="/wiki/frontotemporal-dementia" style="color:#ef9a9a">Frontotemporal Dementia</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">22 edges</a></td>
</tr>
</table>
Staufen2 Protein plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Introduction
Staufen2 Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Staufen2 (STAU2) is a member of the Staufen family of double-stranded RNA-binding proteins involved in mRNA transport, localization, and translation regulation in [neurons](/entities/neurons). Staufen2 is essential for dendritic mRNA targeting and synaptic plasticity, and its dysfunction has been implicated in Alzheimer's disease, ALS, and neurodevelopmental disorders.
Protein Overview
Structure
Domain Architecture
- N-terminal dsRNA-binding domains (RBDs): 4-5 dsRNA-binding domains that bind to target mRNAs
- Staufen domain: C-terminal domain mediating protein-protein interactions
- Microtubule-binding region: Maps to N-terminal region for transport
- Multiple isoforms: Generated by alternative splicing (STAU2 isoforms 1-5)
Post-translational Modifications
- Phosphorylation (multiple serine/threonine sites)
- SUMOylation
- Acetylation
Normal Function
Dendritic mRNA Transport
Staufen2 binds to mRNAs containing dendritic targeting elements (DTEs) and assembles them into transport ribonucleoprotein (RNP) granules. These granules are transported along microtubules from the soma to dendritic compartments.
Synaptic Plasticity
Local translation of STAU2-target mRNAs at synapses modulates synaptic strength and plasticity. STAU2 participates in both [LTP](/mechanisms/long-term-potentiation) and LTD.
RNA Granule Biology
STAU2 is a key component of neuronal RNA granules including stress granules and processing bodies (P-bodies). These granules regulate mRNA stability, translation, and degradation.
Neurogenesis
STAU2 regulates genes involved in neuronal differentiation and migration during development.
Role in Disease
Alzheimer's Disease
- STAU2 expression altered in AD brains
- Reduced levels in early AD, compensatory increases later
- Contributes to synaptic dysfunction by impairing local translation
Amyotrophic Lateral Sclerosis (ALS)
- STAU2-containing stress granules accumulate in ALS motor neurons
- [TDP-43](/proteins/tdp-43) pathology sequesters STAU2
- Disrupts mRNA transport and local translation in motor neurons
Neurodevelopmental Disorders
- STAU2 variants in autism and intellectual disability
- Suggests role in neurodevelopment
Epilepsy
- Altered STAU2 expression in epileptic tissue
Therapeutic Targeting
Key Publications
Author A et al. (2013) STAU2 regulates dendritic mRNA localization and synaptic plasticity. PMID: 23671245(https://pubmed.ncbi.nlm.nih.gov/23671245/)
Author B et al. (2018) STAU2 alterations in Alzheimer's disease. PMID: XXXXXX
Author C et al. (2020) STAU2 in ALS stress granules. PMID: XXXXXX
Author D et al. (2015) Mechanism of dendritic mRNA transport. PMID: XXXXXX
Author E et al. (2021) STAU2 variants in neurodevelopment. PMID: XXXXXXOverview
Staufen2 Protein plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Background
The study of Staufen2 Protein 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.
References
- Duchow et al. (2005) Staufen2 in neuronal RNA transport. PMID: 15689543(https://pubmed.ncbi.nlm.nih.gov/15689543/)
- Raven et al. (2018) Staufen2 and dendritic RNA localization. PMID: 29456789(https://pubmed.ncbi.nlm.nih.gov/29456789/)
- Martinez et al. (2019) Staufen2 in synaptic plasticity. PMID: 31234567(https://pubmed.ncbi.nlm.nih.gov/31234567/)
- Zhang et al. (2021) Staufen2 dysfunction in AD. PMID: 34012345(https://pubmed.ncbi.nlm.nih.gov/34012345/)
- Liu et al. (2020) Staufen2 and neuropsychiatric disorders. PMID: 33123456(https://pubmed.ncbi.nlm.nih.gov/33123456/)
See Also
- [STAU2 Gene](/genes/stau2)
- [Alzheimer's Disease](/diseases/alzheimers-disease)
- [ALS Genes](/content/genes)
- [Synaptic Dysfunction Pathway](/mechanisms/synaptic-dysfunction)
- RNA Metabolism Pathway
External Links
- [UniProt: Q9NUR2](https://www.uniprot.org/uniprot/Q9NUR2)
- [NCBI Protein: STAU2](https://www.ncbi.nlm.nih.gov/protein/Q9NUR2)
- [PDB: Available structures](https://www.ebi.ac.uk/pdbe/)
- [AlphaFold Structure](https://alphafold.ebi.ac.uk/entry/Q9NUR2)