DAXX Gene

📖 Wiki Page

gene878 wordssynced 2026-04-02

DAXX — Death-Domain Associated Protein

<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">DAXX Gene</th>
</tr>
<tr>
<td class="label">Gene Symbol</td>
<td>DAXX</td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>Death-Domain Associated Protein</td>
</tr>
<tr>
<td class="label">Chromosome</td>
<td>6p21.3</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>1616</td>
</tr>
<tr>
<td class="label">OMIM</td>
<td>603186</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000204264</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>Q9UER7</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/als" style="color:#ef9a9a">Als</a>, <a href="/wiki/alzheimer" style="color:#ef9a9a">Alzheimer</a>, <a href="/wiki/breast-cancer" style="color:#ef9a9a">Breast Cancer</a>, <a href="/wiki/cancer" style="color:#ef9a9a">Cancer</a>, <a href="/wiki/cardiovascular" style="color:#ef9a9a">Cardiovascular</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">13 edges</a></td>
</tr>
</table>

Introduction

...

DAXX — Death-Domain Associated Protein

Introduction

DAXX (Death-Domain Associated Protein) is a multifunctional protein encoded by the DAXX gene located on chromosome 6p21.3. It is also known as DAP6 (Death-Associated Protein 6) and BING2. DAXX is a highly conserved protein involved in diverse cellular processes including transcription regulation, [apoptosis](/entities/apoptosis), [autophagy](/entities/autophagy), and stress responses. [@daxx]

DAXX plays complex and context-dependent roles in neurodegeneration, with both pro-survival and pro-apoptotic functions depending on cellular context and stress conditions.[@daxx] [@daxxa]

The protein encoded by DAXX is [DAXX Protein](/proteins/daxx-protein).[@daxxa] [@daxx2014]

--- [@daxxb]

Overview

Mermaid diagram (expand to render)

DAXX is a 740-amino acid protein that localizes to both the nucleus and cytoplasm. It was originally identified as a Fas receptor-interacting protein that promotes apoptosis, but subsequent research has revealed much more complex functions. [@daxxc]

Key aspects of DAXX function:

Transcriptional regulator: Modulates gene expression through histone modification
Stress response protein: Involved in cellular stress pathways
Apoptosis modulator: Can be pro-apoptotic or anti-apoptotic
Autophagy regulator: Affects autophagic flux

Gene Structure

Protein Structure and Function

Domain Architecture

DAXX contains several functional domains:

N-terminal domain: Protein-protein interactions
Central region: Transcriptional repression domain
C-terminal domain: Apoptosis regulation
FAS-binding domain: Mediates death receptor interactions

Cellular Localization

DAXX exhibits dynamic localization:

Nucleus: Nuclear bodies, PML-NBs (promyelocytic leukemia nuclear bodies)
Cytoplasm: Near the plasma membrane and in cytosol
Stress granules: During cellular stress

Biological Functions

Transcription Regulation

DAXX modulates transcription through:

Histone deacetylase (HDAC) recruitment: Represses transcription
Histone demethylase interactions: Modifies chromatin state
PML-NB formation: Creates transcriptional regulatory compartments
p53 regulation: Affects p53-dependent transcription

Apoptosis Regulation

DAXX has context-dependent apoptotic functions:

Pro-apoptotic:

Fas receptor signaling
p53-mediated apoptosis
Stress-induced cell death

Anti-apoptotic:

Autophagy promotion
Survival signaling
Transcriptional repression of pro-death genes

Autophagy

DAXX promotes autophagy through:

Interaction with autophagy proteins
Regulation of autophagic flux
PML-NB-dependent mechanisms

Expression in the Brain

Neuronal Expression

DAXX is expressed in:

Cerebral [cortex](/brain-regions/cortex): Pyramidal [neurons](/entities/neurons)
[Hippocampus](/brain-regions/hippocampus): All regions (CA1-4, dentate gyrus)
Substantia nigra: Dopaminergic neurons
Cerebellum: Purkinje cells
Spinal cord: Motor neurons

Glial Expression

[Astrocytes](/entities/astrocytes): Moderate expression
[Microglia](/cell-types/microglia-neuroinflammation): Induction during activation
Oligodendrocytes: Lower expression

Disease Associations

Alzheimer's Disease

DAXX is implicated in AD through multiple mechanisms:

Apoptosis regulation: Modulates neuronal death pathways
[Tau](/proteins/tau) pathology: Associates with neurofibrillary tangles
Aβ toxicity: Influences [amyloid-beta](/proteins/amyloid-beta) induced cell death
Transcriptional changes: Alters gene expression programs

Parkinson's Disease

In PD, DAXX affects:

Dopaminergic neuron survival: Modulates apoptosis
[α-Synuclein](/proteins/alpha-synuclein) aggregation: May influence aggregation pathways
Autophagy dysfunction: Alters protein clearance

Amyotrophic Lateral Sclerosis (ALS)

Altered expression in ALS motor neurons
May interact with [TDP-43](/mechanisms/tdp-43-proteinopathy) pathology
Affects stress responses

Brain Ischemia/Stroke

Induced after ischemic injury
Modulates neuronal survival
Affects inflammatory responses

Pathogenic Mechanisms

Apoptosis Pathways

DAXX participates in multiple apoptotic cascades:

Fas/FasL pathway: DAXX binds Fas death domain, activates ASK1-JNK pathway

p53-dependent pathway: DAXX enhances p53 pro-apoptotic function

Mitochondrial pathway: Modulates Bcl-2 family function

Autophagy Dysregulation

In neurodegeneration:

Altered DAXX affects autophagic flux
Contributes to protein aggregate accumulation
Impairs clearance of damaged organelles

Transcriptional Dysregulation

DAXX misregulation leads to:

Altered stress response genes
Impaired neuronal survival programs
Inflammatory gene expression

Therapeutic Implications

Targeting DAXX

Potential therapeutic approaches:

Modulators of DAXX expression: Small molecules affecting transcription
Protein-protein interaction inhibitors: Blocking DAXX interactions
Autophagy enhancers: Bypassing DAXX-dependent autophagy defects

Neuroprotective Strategies

Anti-apoptotic approaches: Blocking pro-death DAXX functions
Autophagy induction: Enhancing protein clearance
Stress response modulation: Improving neuronal resilience

Research Models

Cellular Models

Primary neuron cultures
iPSC-derived neurons
Neuroblastoma cell lines

Animal Models

Daxx knockout mice
Transgenic overexpression models
Disease model crosses

Molecular Studies

Co-immunoprecipitation studies
Proteomic analysis
Transcriptomic profiling

Clinical Relevance

Biomarkers

DAXX expression as a potential biomarker
Soluble DAXX in CSF
Tissue biopsy studies

Genetic Variants

Investigating DAXX polymorphisms in neurodegeneration
Rare variants in disease cohorts

External Links

[NCBI Gene: DAXX](https://www.ncbi.nlm.nih.gov/gene/1616)
[UniProt: DAXX](https://www.uniprot.org/uniprot/Q9UER7)
[OMIM: DAXX](https://omim.org/entry/603186)
[Human Protein Atlas: DAXX](https://www.proteinatlas.org/ENSG00000204264-DAXX)

Background

The study of Daxx 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

[Unknown, DAXX: A Multifunctional Protein in Cell Death and Transcription - Journal of Cellular Physiology (n.d.)](https://doi.org/10.1002/jcp.24891)

Unknown, DAXX Protein - UniProt (n.d.)

[Unknown, DAXX in Apoptosis - Cell Death and Differentiation (2014)](https://doi.org/10.1038/cdd.2014.135)

[Unknown, DAXX and Autophagy - Autophagy (n.d.)](https://doi.org/10.4161/auto.28237)

[Unknown, DAXX in Alzheimer's Disease - Journal of Alzheimer's Disease (n.d.)](https://doi.org/10.3233/JAD-150240)

Pathway Diagram

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

Mermaid diagram (expand to render)

📖 View canonical wiki page →

DAXX Gene

DAXX — Death-Domain Associated Protein

Introduction

DAXX — Death-Domain Associated Protein

Introduction

Overview

Gene Structure

Protein Structure and Function

Domain Architecture

Cellular Localization

Biological Functions

Transcription Regulation

Apoptosis Regulation

Autophagy

Expression in the Brain

Neuronal Expression

Glial Expression

Disease Associations

Alzheimer's Disease

Parkinson's Disease

Amyotrophic Lateral Sclerosis (ALS)

Brain Ischemia/Stroke

Pathogenic Mechanisms

Apoptosis Pathways

Autophagy Dysregulation

Transcriptional Dysregulation

Therapeutic Implications

Targeting DAXX

Neuroprotective Strategies

Research Models

Cellular Models

Animal Models

Molecular Studies

Clinical Relevance

Biomarkers

Genetic Variants

See Also

External Links

Background

References

Pathway Diagram