NDP52 Protein

NDP52 Protein

Introduction

<table class="infobox infobox-protein">
<tr>
<th class="infobox-header" colspan="2">NDP52 Protein</th>
</tr>
<tr>
<td class="label">Symbol</td>
<td><strong>NDP52</strong></td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>NDP52</td>
</tr>
<tr>
<td class="label">Type</td>
<td>Protein</td>
</tr>
<tr>
<td class="label">UniProt</td>
<td><a href="https://www.uniprot.org/uniprot/?query=NDP52" target="_blank">Search UniProt</a></td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/ad" style="color:#ef9a9a">AD</a>, <a href="/wiki/ali" style="color:#ef9a9a">ALI</a>, <a href="/wiki/als" style="color:#ef9a9a">ALS</a>, <a href="/wiki/alzheimer" style="color:#ef9a9a">ALZHEIMER</a>, <a href="/wiki/alzheimer-disease" style="color:#ef9a9a">ALZHEIMER DISEASE</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">707 edges</a></td>
</tr>
</table>

Ndp52 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.

Overview

NDP52 Protein

Introduction

<table class="infobox infobox-protein">
<tr>
<th class="infobox-header" colspan="2">NDP52 Protein</th>
</tr>
<tr>
<td class="label">Symbol</td>
<td><strong>NDP52</strong></td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>NDP52</td>
</tr>
<tr>
<td class="label">Type</td>
<td>Protein</td>
</tr>
<tr>
<td class="label">UniProt</td>
<td><a href="https://www.uniprot.org/uniprot/?query=NDP52" target="_blank">Search UniProt</a></td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/ad" style="color:#ef9a9a">AD</a>, <a href="/wiki/ali" style="color:#ef9a9a">ALI</a>, <a href="/wiki/als" style="color:#ef9a9a">ALS</a>, <a href="/wiki/alzheimer" style="color:#ef9a9a">ALZHEIMER</a>, <a href="/wiki/alzheimer-disease" style="color:#ef9a9a">ALZHEIMER DISEASE</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">707 edges</a></td>
</tr>
</table>

Ndp52 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.

Overview

NDP52 (CALCOCO2) is a selective autophagy receptor that plays critical roles in targeting specific cargo for autophagic degradation. Originally identified as a coactivator for transcription factors, NDP52 has emerged as a key player in innate immunity and selective autophagy of damaged organelles and intracellular pathogens. The protein contains multiple functional domains that enable it to recognize ubiquitinated cargo and recruit autophagosomal machinery. NDP52 is particularly important for the clearance of damaged mitochondria through mitophagy and for defense against intracellular bacteria.

Structure

NDP52 contains several critical structural elements:

• Coiled-coil domain: Mediates homodimerization and interaction with other autophagy proteins
• LIR (LC3-interacting region): Canonical motif that binds LC3/GABARAP family proteins on autophagosomes
• UBAN (Ubiquitin-binding in ABIN and NEMO) domain: Recognizes and binds ubiquitin chains on cargo proteins
• Basic region: Facilitates membrane association

Molecular Function

Selective Autophagy

NDP52 serves as a cargo receptor for selective autophagy:

Signaling Roles

Beyond autophagy, NDP52:

• Acts as a coactivator for various transcription factors
• Modulates [NF-κB](/entities/nf-kb) signaling pathways
• Participates in antiviral immune responses

Expression Pattern

NDP52 is expressed in various tissues:

• High expression in immune cells (macrophages, dendritic cells)
• Present in [neurons](/entities/neurons) and glial cells
• Expressed in epithelial cells
• Ubiquitous throughout the body

Disease Associations

Alzheimer's Disease

NDP52 has emerging roles in AD:

• Implicated in clearance of damaged mitochondria
• May help clear amyloid plaques and [tau](/proteins/tau) aggregates
• Dysregulation contributes to impaired mitophagy in AD
• Potential therapeutic target[@korac2013]

Parkinson's Disease

NDP52 is critical for PD:

• Essential for PINK1-Parkin-independent mitophagy pathways
• Handles mitochondrial quality control in dopaminergic neurons
• Impaired NDP52 function exacerbates [alpha-synuclein](/mechanisms/alpha-synuclein) toxicity
• Therapeutic potential for enhancing mitophagy[@lazarou2015]

Inflammatory Diseases

• NDP52 variants associated with Crohn's disease
• Dysregulated xenophagy contributes to inflammatory conditions
• Role in autoimmune responses

Therapeutic Implications

Targeting NDP52

NDP52-based therapeutics are being explored:

Challenges

• Specific modulators still in development
• Essential functions in immunity require careful targeting
• Delivery to appropriate cell types remains challenging

Research Directions

Active research areas:

• Structural studies of NDP52-LC3 interactions
• Understanding cargo recognition specificity
• Developing selective NDP52 modulators
• Biomarkers for NDP52 activity

Pathway & Interaction Diagram

Interactive diagram showing NDP52's key relationships in the SciDEX knowledge graph (15 connections shown).

See Also

• [NDP52 Gene](/proteins/ndp52-protein)
• [Autophagy-Lysosomal Pathway](/mechanisms/autophagy-lysosomal-pathway)
• [Mitophagy Pathway](/mechanisms/mitochondrial-dysfunction-pathway)
• [PINK1 Gene](/proteins/pink1-protein)
• [Parkin Gene](/proteins/prkn-protein)

Background

The study of Ndp52 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

• [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

Molecular Mechanisms

NDP52 (Nuclear Domain 10 Protein 52), also known as CALCOCO2, is a selective autophagy receptor involved in targeting damaged organelles and intracellular pathogens for lysosomal degradation. The protein contains an LC3-interacting region (LIR) that allows it to bind to LC3/GABARAP proteins on autophagosomal membranes.

NDP52 plays critical roles in mitophagy (selective degradation of mitochondria), xenophagy (selective degradation of intracellular pathogens), and aggrephagy (selective degradation of protein aggregates). The protein also functions in NF-kB signaling and innate immunity.

Disease Associations

Parkinson's Disease: NDP52 is involved in mitophagy, the process by which damaged mitochondria are selectively eliminated. Defects in mitophagy are central to PD pathogenesis, as PINK1 and Parkin mutations impair this pathway. NDP52 may serve as an alternative mitophagy receptor.

Alzheimer's Disease: NDP52 may be involved in clearing amyloid-beta aggregates and damaged organelles. The protein's role in autophagy is relevant for AD pathogenesis.

ALS: NDP52 may help clear protein aggregates characteristic of ALS, including TDP-43 and SOD1 aggregates. The protein could have therapeutic potential.

Therapeutic Implications

Enhancing NDP52-mediated selective autophagy could provide therapeutic benefits for neurodegenerative diseases by improving clearance of toxic protein aggregates and damaged organelles.

Research Directions

Research focuses on understanding how NDP52 dysfunction contributes to neurodegeneration and developing therapies that enhance selective autophagy.

References