APOA1 Protein

APOA1 Protein

Introduction

Apoa1 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 infox-protein"> [@purinergic]
<table> [@lipid]
<tr><th colspan="2" style="background:#f0f0f0;">APOA1 — Apolipoprotein A1</th></tr> [@sleep]
<tr><td><strong>Protein Name</strong></td><td>Apolipoprotein A1</td></tr> [@neurodegeneration]
<tr><td><strong>Gene</strong></td><td>[APOA1](/proteins/apoa1-protein)</td></tr>
<tr><td><strong>UniProt ID</strong></td><td>P02647</td></tr>
<tr><td><strong>PDB Structure</strong></td><td>2NOB, 1AV1</td></tr>
<tr><td><strong>Molecular Weight</strong></td><td>28 kDa</td></tr>
<tr><td><strong>Subcellular Localization</strong></td><td>Secreted, plasma HDL</td></tr>
<tr><td><strong>Protein Family</strong></td><td>Apolipoprotein A family</td></tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/ad" style="color:#ef9a9a">AD</a>, <a href="/wiki/als" style="color:#ef9a9a">ALS</a>, <a href="/wiki/ami" style="color:#ef9a9a">AMI</a>, <a href="/wiki/arm" style="color:#ef9a9a">ARM</a>, <a href="/wiki/als" style="color:#ef9a9a">Als</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">121 edges</a></td>
</tr>
</table>
</div>

##1 is the primary Structure

APOA protein component of high-density lipoprotein (HDL) particles, crucial for reverse cholesterol transport.

APOA1 Protein

Introduction

Apoa1 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 infox-protein"> [@purinergic]
<table> [@lipid]
<tr><th colspan="2" style="background:#f0f0f0;">APOA1 — Apolipoprotein A1</th></tr> [@sleep]
<tr><td><strong>Protein Name</strong></td><td>Apolipoprotein A1</td></tr> [@neurodegeneration]
<tr><td><strong>Gene</strong></td><td>[APOA1](/proteins/apoa1-protein)</td></tr>
<tr><td><strong>UniProt ID</strong></td><td>P02647</td></tr>
<tr><td><strong>PDB Structure</strong></td><td>2NOB, 1AV1</td></tr>
<tr><td><strong>Molecular Weight</strong></td><td>28 kDa</td></tr>
<tr><td><strong>Subcellular Localization</strong></td><td>Secreted, plasma HDL</td></tr>
<tr><td><strong>Protein Family</strong></td><td>Apolipoprotein A family</td></tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/ad" style="color:#ef9a9a">AD</a>, <a href="/wiki/als" style="color:#ef9a9a">ALS</a>, <a href="/wiki/ami" style="color:#ef9a9a">AMI</a>, <a href="/wiki/arm" style="color:#ef9a9a">ARM</a>, <a href="/wiki/als" style="color:#ef9a9a">Als</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">121 edges</a></td>
</tr>
</table>
</div>

##1 is the primary Structure

APOA protein component of high-density lipoprotein (HDL) particles, crucial for reverse cholesterol transport.

Domain Architecture

Structural Features

• Amphipathic helices: 10-11 tandem amphipathic helices
• LCAT activation site: N-terminal region
• Phospholipid binding: C-terminal domain
• HDL binding: Multiple regions contribute

Overview

APOA1 (Apolipoprotein A1) is a protein encoded by a gene located on chromosome 11q23.3. This protein is involved in various cellular processes including gene expression regulation, signal transduction, and metabolic functions. APOA1 plays important roles in neuronal function and is implicated in neurodegenerative diseases.

Normal Function

Lipid Metabolism

APOA1 serves critical functions in lipid transport:

Physiological Roles

• Cardioprotection: High HDL/APOA1 protects against CVD
• Anti-inflammatory: Modulates immune responses
• Neuroprotection: May protect against neurodegeneration

Role in Disease

Alzheimer's Disease

• APOA1 polymorphisms modify AD risk and progression
• Reduced APOA1 levels increase AD risk
• Binds and may influence [Aβ](/proteins/amyloid-beta) clearance
• Cerebral amyloid angiopathy involves APOA1

Cerebral Amyloid Angiopathy

• APOA1 in cerebrovascular amyloid deposits
• APOA1 mutations cause hereditary CAA
• Vascular Aβ clearance involves APOA1

Cardiovascular Disease

• Low APOA1 is a cardiovascular risk factor
• High APOA1/HDL is protective
• APOA1 deficiency increases atherosclerosis

Therapeutic Targeting

HDL-Targeting Therapies

• HDL infusion: APOA1-containing HDL infusions
• APOA1 mimetic peptides: Synthetic APOA1 analogs
• Recombinant APOA1: MDCO-216 in clinical trials

Drug Development

• LCAT activators: Increase APOA1 functionality
• ABCA1 agonists: Enhance cholesterol efflux
• PPAR agonists: Increase APOA1 expression

Key Publications

See Also

• [APOA1 Gene](/proteins/apoa1-protein)
• [APOA2 Protein](/proteins/apoa2-protein)
• [APOB Protein](/proteins/apob-protein)
• [HDL in Neurodegeneration](/mechanisms/lipid-metabolism-dysfunction)

External Links

• [UniProt: APOA1 (P02647)](https://www.uniprot.org/uniprot/P02647)
• [PDB: APOA1 Structures](https://www.rcsb.org/structure/2NOB)
• [NCBI Protein: APOA1](https://www.ncbi.nlm.nih.gov/protein/P02647)

Background

The study of Apoa1 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