WNT3A Protein

WNT3A Protein

Introduction

<table class="infobox infobox-protein">
<tr>
<th class="infobox-header" colspan="2">WNT3A Protein</th>
</tr>
<tr>
<td class="label">Modification</td>
<td>Role</td>
</tr>
<tr>
<td class="label">Palmitoylation (Cys-88)</td>
<td>Receptor binding, secretion</td>
</tr>
<tr>
<td class="label">N-linked glycosylation</td>
<td>Stability</td>
</tr>
<tr>
<td class="label">Signal peptide cleavage</td>
<td>Secretion</td>
</tr>
<tr>
<td class="label">Disulfide bonds</td>
<td>Proper folding</td>
</tr>
<tr>
<td class="label">Receptor</td>
<td>Pathway</td>
</tr>
<tr>
<td class="label">FZD1</td>
<td>Canonical</td>
</tr>
<tr>
<td class="label">FZD5</td>
<td>Canonical</td>
</tr>
<tr>
<td class="label">FZD7</td>
<td>Canonical</td>
</tr>
<tr>
<td class="label">LRP6</td>
<td>Co-receptor</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/als" style="color:#ef9a9a">ALS</a>, <a href="/wiki/als" style="color:#ef9a9a">Als</a>, <a href="/wiki/alzheimer" style="color:#ef9a9a">Alzheimer</a>, <a href="/wiki/cancer" style="color:#ef9a9a">Cancer</a>, <a href="/wiki/fibrosis" style="color:#ef9a9a">Fibrosis</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">45 edges</a></td>
</tr>
</table>

WNT3A Protein

Introduction

<table class="infobox infobox-protein">
<tr>
<th class="infobox-header" colspan="2">WNT3A Protein</th>
</tr>
<tr>
<td class="label">Modification</td>
<td>Role</td>
</tr>
<tr>
<td class="label">Palmitoylation (Cys-88)</td>
<td>Receptor binding, secretion</td>
</tr>
<tr>
<td class="label">N-linked glycosylation</td>
<td>Stability</td>
</tr>
<tr>
<td class="label">Signal peptide cleavage</td>
<td>Secretion</td>
</tr>
<tr>
<td class="label">Disulfide bonds</td>
<td>Proper folding</td>
</tr>
<tr>
<td class="label">Receptor</td>
<td>Pathway</td>
</tr>
<tr>
<td class="label">FZD1</td>
<td>Canonical</td>
</tr>
<tr>
<td class="label">FZD5</td>
<td>Canonical</td>
</tr>
<tr>
<td class="label">FZD7</td>
<td>Canonical</td>
</tr>
<tr>
<td class="label">LRP6</td>
<td>Co-receptor</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/als" style="color:#ef9a9a">ALS</a>, <a href="/wiki/als" style="color:#ef9a9a">Als</a>, <a href="/wiki/alzheimer" style="color:#ef9a9a">Alzheimer</a>, <a href="/wiki/cancer" style="color:#ef9a9a">Cancer</a>, <a href="/wiki/fibrosis" style="color:#ef9a9a">Fibrosis</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">45 edges</a></td>
</tr>
</table>

Wnt3A 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.
title: WNT3A Protein
.infobox.infix-protein
; Protein Name
: Wnt Family Member 3A Protein
; Gene Symbol
: [WNT3A](/proteins/wnt3a-protein)
; UniProt ID
: [P56704](https://www.uniprot.org/uniprotkb/P56704)
; Molecular Weight
: 36 kDa
; Subcellular Localization
: Secreted, extracellular
; Protein Family
: Wnt family

Overview

The WNT3A protein (Wingless-type MMTV integration site 3A family member) is a highly conserved secreted signaling molecule essential for embryonic development and adult tissue homeostasis. WNT3A is one of the most potent Wnt ligands and serves as a key regulator of neural development, synaptic plasticity, and neuronal survival [@wodarz1998]. In the adult nervous system, WNT3A continues to play important roles in hippocampal function, learning and memory, and neuronal maintenance. Dysregulated WNT3A signaling has been strongly implicated in neurodegenerative diseases including Alzheimer's disease (AD) and Parkinson's disease (PD), as well as neurodevelopmental disorders [@de2003][@zhang2008].

Protein Structure

Primary Structure

The WNT3A protein consists of 352 amino acids:

• Signal peptide (1-23 aa): ER targeting
• Wnt domain (50-150 aa): Receptor binding
• C-terminal domain (150-352 aa): Signaling

Post-Translational Modifications

Molecular Mechanisms

Receptor Binding

WNT3A binds multiple Frizzled receptors:

Signal Transduction

Canonical Pathway

Non-Canonical

• PCP pathway
• WNT/Ca²⁺ pathway

Normal Function

Neural Development

• Neural tube patterning
• Neuronal differentiation
• Cortical development
• Synaptogenesis

Adult Brain Function

• Hippocampal plasticity
• Learning and memory
• Synaptic maintenance
• Neuroprotection

Disease Involvement

Alzheimer's Disease

• Reduced WNT3A in AD brain [@de2003]
• [Aβ](/proteins/amyloid-beta) inhibits WNT3A signaling
• Restoring WNT3A is therapeutic

Parkinson's Disease

• Protects dopaminergic [neurons](/entities/neurons) [@zhang2008]
• Promotes survival
• Potential regeneration

Autism

• Genetic associations
• Synaptic deficits

Therapeutic Potential

• Recombinant protein delivery
• Gene therapy
• Small molecule activators

Key Publications

See Also

• [Wnt Signaling Pathway](/mechanisms/wnt-signaling)
• [Alzheimer's Disease](/diseases/alzheimers-disease)
• [Parkinson's Disease](/diseases/parkinsons-disease)
• [Synaptic Plasticity](/mechanisms/synaptic-plasticity)
• [WNT3A Gene](/proteins/wnt3a-protein)
• [LRP6 Protein](/proteins/lrp6-protein)
• [GSK3β](/entities/gsk3-beta)

Background

The study of Wnt3A 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.

External Links

• [UniProt: WNT3A](https://www.uniprot.org/uniprotkb/P56704)
• [NCBI Protein: WNT3A](https://www.ncbi.nlm.nih.gov/protein/?term=WNT3A)

References