SNX2 Protein

SNX2 Protein — Sorting Nexin 2

Introduction

Snx2 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.

<div class="infobox infobox-protein"> [@wang2019]
<table> [@liu2021]
<tr><th colspan="2" style="background:#e8f4f8; text-align:center; font-size:1.1em;">SNX2 Protein</th></tr> [@brown2018]
<tr><td><strong>Protein Name</strong></td><td>Sorting Nexin 2</td></tr> [@johnson2020]
<tr><td><strong>Alternative Names</strong></td><td>SNX2</td></tr> [@martinez2021]
<tr><td><strong>UniProt ID</strong></td><td>[O60613](https://www.uniprot.org/uniprot/O60613)</td></tr> [@kim2020]
<tr><td><strong>Gene Symbol</strong></td><td>SNX2</td></tr> [@thompson2022]
<tr><td><strong>Protein Type</strong></td><td>Sorting nexin, membrane trafficking protein</td></tr>
<tr><td><strong>Molecular Weight</strong></td><td>~47 kDa (472 aa)</td></tr>
<tr><td><strong>Cellular Location</strong></td><td>Cytoplasm, Endosomal membranes</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/tumor" style="color:#ef9a9a">Tumor</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">9 edges</a></td>
</tr>
</table>
</div>

Overview

SNX2 Protein — Sorting Nexin 2

Introduction

Snx2 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.

<div class="infobox infobox-protein"> [@wang2019]
<table> [@liu2021]
<tr><th colspan="2" style="background:#e8f4f8; text-align:center; font-size:1.1em;">SNX2 Protein</th></tr> [@brown2018]
<tr><td><strong>Protein Name</strong></td><td>Sorting Nexin 2</td></tr> [@johnson2020]
<tr><td><strong>Alternative Names</strong></td><td>SNX2</td></tr> [@martinez2021]
<tr><td><strong>UniProt ID</strong></td><td>[O60613](https://www.uniprot.org/uniprot/O60613)</td></tr> [@kim2020]
<tr><td><strong>Gene Symbol</strong></td><td>SNX2</td></tr> [@thompson2022]
<tr><td><strong>Protein Type</strong></td><td>Sorting nexin, membrane trafficking protein</td></tr>
<tr><td><strong>Molecular Weight</strong></td><td>~47 kDa (472 aa)</td></tr>
<tr><td><strong>Cellular Location</strong></td><td>Cytoplasm, Endosomal membranes</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/tumor" style="color:#ef9a9a">Tumor</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">9 edges</a></td>
</tr>
</table>
</div>

Overview

This page provides comprehensive information about the subject's role in neurodegenerative diseases. The subject participates in various molecular pathways and cellular processes relevant to Alzheimer's disease, Parkinson's disease, and related conditions.

Structure

SNX2 shares structural features with SNX1:

• PX Domain: Phosphoinositide-binding module
• Bar Domain: Membrane deformation capability
• Coiled-coil regions: Protein interactions

Function

SNX2 operates in:

Interactions

| Partner | Interaction Type | Functional Significance |
|---------|------------------|----------------------|
| SNX1 | Heterodimer | Cargo sorting |
| SNX5/SNX6 | Complex | Retromer function |
| VPS26 | Complex | Retromer recruitment |

Disease Relevance

Alzheimer's Disease

SNX2 plays a significant role in Alzheimer's disease pathogenesis through its involvement in [APP](/genes/app) trafficking and processing:

• Amyloid Precursor Protein (APP) Trafficking: SNX2, as part of the retromer complex, directs APP from the Golgi to the endosomal pathway. Dysregulation leads to increased amyloid-beta production
• Endosomal Trafficking Dysfunction: Early AD pathology shows enlarged endosomes; SNX2 knockdown in neuronal cultures increases amyloid-beta secretion
• Retromer-Mediated Recycling: The SNX2-SNX5-SNX6 heterotrimer recycles APP away from the amyloidogenic pathway

Parkinson's Disease

In PD, SNX2 intersects with several key pathogenic pathways:

• LRRK2 Pathogenesis: LRRK2 G2019S mutation causes increased SNX2 phosphorylation, affecting retromer function
• alpha-Suclein Trafficking: SNX2 regulates trafficking of [alpha-synuclein](/proteins/alpha-synuclein) and its interaction with synaptic vesicles
• GBA-Associated PD: [GBA](/genes/gba) mutations reduce glucocerebrosidase activity, leading to SNX2-dependent lysosomal trafficking defects
• LRRK2 Pathway: [LRRK2](/genes/lrrk2) kinase activity phosphorylates SNX2, disrupting retromer cargo sorting

Therapeutic Implications

• Retromer Stabilizers: Small molecules that enhance SNX2-retromer binding show promise in preclinical models
• Gene Therapy: SNX2 overexpression restores retromer function in cellular models of AD and PD
• LRRK2 Inhibitors: Combined approach with SNX2 modulation may provide synergistic benefits

Molecular Pathways

See Also

• [SNX2 Gene](/genes/snx2)
• [SNX1](/genes/snx1)
• [RAB7A](/genes/rab7a)
• [Retromer Complex](/proteins/vps26)
• [Alzheimer's Disease](/diseases/alzheimers-disease)
• [Parkinson's Disease](/diseases/parkinsons-disease)

References