MAX Protein (MAX)

MAX Protein

Pathway Diagram

```mermaid
flowchart TD
MAX["MAX<br/>Transcription Factor"]

CGAS["cGAS<br/>DNA Sensor"]
STING["STING<br/>Innate Immunity"]
PARP1["PARP1<br/>DNA Repair"]

Neurodegeneration["Neurodegeneration<br/>Progressive Loss"]
ALS["Amyotrophic Lateral<br/>Sclerosis (ALS)"]
MS["Multiple Sclerosis<br/>(MS)"]
Parkinsons["Parkinson's<br/>Disease"]

Aging["Cellular<br/>Aging"]
Autoimmune["Autoimmune<br/>Response"]
Cancer["Cancer<br/>Development"]
Tumor["Tumor<br/>Formation"]

Inflammation["Chronic<br/>Inflammation"]
DNA_Damage["DNA Damage<br/>Response"]
Cell_Death["Neuronal<br/>Cell Death"]
Therapeutic["Therapeutic<br/>Target"]

MAX -->|"inhibits"| CGAS
MAX -->|"inhibits"| STING
MAX -->|"inhibits"| PARP1

CGAS -->|"activates"| STING
STING -->|"promotes"| Inflammation
PARP1 -->|"responds to"| DNA_Damage

MAX -->|"regulates"| Aging
MAX -->|"associated with"| Neurodegeneration
MAX -->|"activates"| ALS
MAX -->|"activates"| MS
MAX -->|"associated with"| Parkinsons

Inflammation -->|"contributes to"| Neurodegeneration
DNA_Damage -->|"leads to"| Cell_Death
Aging -->|"promotes"| Neurodegeneration

MAX -->|"activates"| Autoimmune
Autoimmune -->|"triggers"| MS

MAX -->|"therapeutic target"| Therapeutic

style MAX fill:#006494
style PARP1 fill:#4a1a6b
style CGAS fill:#4a1a6b
style STING fill:#4a1a6b
style Therapeutic fill:#1b5e20
style Neurodegeneration fill:#5d4400

MAX Protein

Pathway Diagram

Introduction

Max Protein (Max) 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 infobox-protein"> [@johnson2019]
<table>
<tr><th colspan="2" style="background:#f0f0f0;">MAX Protein</th></tr>
<tr><td><b>Gene</b></td><td>[MAX](/genes/max)</td></tr>
<tr><td><b>UniProt ID</b></td><td><a href="https://www.uniprot.org/uniprotkb/P61275" target="_blank">P61275</a></td></tr>
<tr><td><b>PDB ID(s)</b></td><td>1A93, 1NLW</td></tr>
<tr><td><b>Molecular Weight</b></td><td>21 kDa</td></tr>
<tr><td><b>Subcellular Localization</b></td><td>Nucleus</td></tr>
<tr><td><b>Protein Family</b></td><td>bHLH-LZ Transcription Factor Family</td><tr><td></tr>
<b>Description</b></td><td>Transcription factor, Myc/Max/Mad network member</td></tr>
<tr><td><b>Associated Diseases</b></td><td>Neuroblastoma, Burkitt Lymphoma, Alzheimer's Disease, Parkinson's Disease</td></tr>
</table>
</div>

Overview

MAX is a bHLH-LZ transcription factor that serves as the central hub of the Myc/Max/Mad network. MAX-MYC heterodimers activate proliferation genes while MAX-MAD heterodimers repress them. In [neurons](/entities/neurons), MAX regulates synaptic plasticity genes and controls [apoptosis](/entities/apoptosis). The Myc/Max network is dysregulated in neurodegenerative diseases, contributing to neuronal dysfunction and death.

Structure

MAX belongs to the bHLH-LZ Transcription Factor Family. The protein contains:

• Multiple functional domains for chromatin interaction
• Catalytic domains (for enzymatic proteins) or DNA-binding domains (for transcription factors)
• Protein-protein interaction motifs for complex formation

Normal Function in the Nervous System

MAX plays critical roles in normal neuronal function:

Role in Neurodegeneration

Dysregulation of MAX contributes to neurodegenerative processes through several mechanisms:

Alzheimer's Disease

• Alters epigenetic control of neuronal survival genes
• May affect amyloid processing and [tau](/proteins/tau) phosphorylation pathways
• Contributes to synaptic dysfunction

Parkinson's Disease

• Affects dopaminergic neuron survival
• May disrupt transcriptional programs essential for mitochondrial function
• Contributes to protein aggregation pathology

Other Neurodegenerative Diseases

• Alzheimer's Disease, Parkinson's Disease

Therapeutic Targeting

Therapeutic strategies targeting MAX include:

| Approach | Status | Notes |
|----------|--------|-------|
| Small molecule inhibitors | Preclinical | Various compounds in development |
| Epigenetic modulators | Research | Broader specificity |
| Gene therapy | Experimental | AAV-delivered functional copies |
| Protein-protein interaction inhibitors | Research | Targeting complex formation |

Biomarkers

MAX expression and activity can be measured in:

• Brain tissue (postmortem studies)
• CSF (experimental)
• Blood cells (research use)

Research Directions

• Development of selective modulators for CNS applications
• Understanding brain-specific functions and regulation
• Investigating interactions with disease proteins
• Biomarker development for diagnosis and progression

Background

The study of Max Protein (Max) 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.

See Also

• Epigenetic Dysregulation in Neurodegeneration
• [Histone Modification Pathways](/mechanisms/epigenetic-regulation-neurodegeneration)
• Transcription Factor Networks
• [Alzheimer's Disease](/diseases/alzheimers-disease)
• [Parkinson's Disease](/diseases/parkinsons-disease)
• MAX Gene

External Links

• [UniProt: P61275](https://www.uniprot.org/uniprotkb/P61275)
• [PDB: MAX](https://www.rcsb.org/structure/1A93)
• [NCBI Protein: MAX](https://www.ncbi.nlm.nih.gov/protein)

References

Pathway Diagram

The following diagram shows the key molecular relationships involving MAX Protein (MAX) discovered through SciDEX knowledge graph analysis: