APOA2 Gene

Overview

APOA2 is a gene/protein that plays a critical role in neurodegenerative disease. It is located on chromosome 1q23.3 and catalogued as NCBI Gene ID [11609](https://www.ncbi.nlm.nih.gov/gene/11609).

APOA2 is an apolipoprotein involved in lipid transport. It may influence amyloid deposition in [Alzheimer's disease](/diseases/alzheimers-disease). [@apc]

--- [@axin]

APOA2 Gene

Introduction

Apoa2 Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes. [@frizzled]

Overview

APOA2 is a gene/protein that plays a critical role in neurodegenerative disease. It is located on chromosome 1q23.3 and catalogued as NCBI Gene ID [11609](https://www.ncbi.nlm.nih.gov/gene/11609).

APOA2 is an apolipoprotein involved in lipid transport. It may influence amyloid deposition in [Alzheimer's disease](/diseases/alzheimers-disease). [@apc]

--- [@axin]

APOA2 Gene

Introduction

Apoa2 Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes. [@frizzled]

<div class="infobox infox-gene"> [@lipoprotein]
<table>
<tr><th colspan="2" style="background:#f0f0f0;">APOA2 — Apolipoprotein A2</th></tr>
<tr><td><strong>Full Name</strong></td><td>Apolipoprotein A2</td></tr>
<tr><td><strong>Gene Symbol</strong></td><td>APOA2</td></tr>
<tr><td><strong>Chromosomal Location</strong></td><td>Chr1q23.3</td></tr>
<tr><td><strong>NCBI Gene ID</strong></td><td>336</td></tr>
<tr><td><strong>OMIM</strong></td><td>107670</td></tr>
<tr><td><strong>Ensembl ID</strong></td><td>ENSG00000158874</td></tr>
<tr><td><strong>UniProt ID</strong></td><td>P02652</td></tr>
<tr><td><strong>Associated Diseases</strong></td><td>[Alzheimer's Disease](/diseases/alzheimers-disease), [Hypercholesterolemia](/diseases/hypercholesterolemia), [Atherosclerosis](/diseases/atherosclerosis), [Obesity](/diseases/obesity)</td></tr>
</table>
</div>

Function

The APOA2 gene encodes Apolipoprotein A2, the second most abundant apolipoprotein in high-density lipoprotein (HDL) particles. APOA2 plays important roles in lipid metabolism and has been implicated in various metabolic and neurodegenerative conditions.

Molecular Mechanism

APOA2 participates in several metabolic pathways:

Structural Features

APOA2 contains:

• Signal peptide for secretion
• Single polypeptide chain of 77 amino acids
• Amphipathic helix for lipid binding
• C-terminal region important for HDL association

Disease Associations

Alzheimer's Disease

• APOA2 polymorphisms may modify AD risk
• APOA2 levels correlate with cognitive function in some studies
• Cerebral APOA2 may influence amyloid pathology

Metabolic Disorders

• Hypertriglyceridemia: APOA2 affects triglyceride metabolism
• Obesity: APOA2 variants associated with body weight
• Type 2 diabetes: APOA2 dysfunction may contribute to metabolic syndrome

Cardiovascular Disease

• Atherosclerosis: Conflicting data on APOA2 protection
• Coronary artery disease: APOA2 may be a modifier

Expression Pattern

Brain

• Limited expression in the brain compared to periphery
• Detected in some neuronal populations

Peripheral Tissues

• Liver: Primary site of APOA2 synthesis
• Small intestine: Secondary production site

Therapeutic Implications

Research Directions

• APOA2 as a metabolic biomarker
• Understanding APOA2's role in neurodegeneration
• Potential for APOA2-based therapies

Key Publications

See Also

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

External Links

• [NCBI Gene: APOA2](https://www.ncbi.nlm.nih.gov/gene/336)
• [UniProt: APOA2 (P02652)](https://www.uniprot.org/uniprot/P02652)
• [OMIM: APOA2](https://www.omim.org/entry/107670)

Background

The study of Apoa2 Gene 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

Pathway Diagram

The following diagram shows the key molecular relationships involving APOA2 Gene discovered through SciDEX knowledge graph analysis: