TFAP4 — Transcription Factor AP-4

TFAP4 — Transcription Factor AP-4

<table class="infobox infobox-gene">
<tr><th class="infobox-header" colspan="2">TFAP4 — Transcription Factor AP-4</th></tr>
<tr><td class="label">Symbol</td><td><strong>TFAP4</strong></td></tr>
<tr><td class="label">Full Name</td><td>Transcription Factor AP-4</td></tr>
<tr><td class="label">Chromosome</td><td>16p13.3</td></tr>
<tr><td class="label">NCBI Gene</td><td><a href="https://www.ncbi.nlm.nih.gov/gene/7023" target="_blank">7023</a></td></tr>
<tr><td class="label">Ensembl</td><td>ENSG00000130247</td></tr>
<tr><td class="label">OMIM</td><td><a href="https://omim.org/entry/601681" target="_blank">601681</a></td></tr>
<tr><td class="label">UniProt</td><td><a href="https://www.uniprot.org/uniprot/Q01658" target="_blank">Q01658</a></td></tr>
<tr><td class="label">Protein Class</td><td>bZIP Transcription Factor</td></tr>
<tr><td class="label">Expression</td><td>Cerebral [cortex](/brain-regions/cortex), [Hippocampus](/brain-regions/hippocampus), Cerebellum, Widespread</td></tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/aging" style="color:#ef9a9a">Aging</a>, <a href="/wiki/cardiovascular" style="color:#ef9a9a">Cardiovascular</a>, <a href="/wiki/coronary-artery-disease" style="color:#ef9a9a">Coronary Artery Disease</a>, <a href="/wiki/longevity" style="color:#ef9a9a">Longevity</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">11 edges</a></td>
</tr>
</table>

TFAP4 — Transcription Factor AP-4

Introduction

...

TFAP4 — Transcription Factor AP-4

<table class="infobox infobox-gene">
<tr><th class="infobox-header" colspan="2">TFAP4 — Transcription Factor AP-4</th></tr>
<tr><td class="label">Symbol</td><td><strong>TFAP4</strong></td></tr>
<tr><td class="label">Full Name</td><td>Transcription Factor AP-4</td></tr>
<tr><td class="label">Chromosome</td><td>16p13.3</td></tr>
<tr><td class="label">NCBI Gene</td><td><a href="https://www.ncbi.nlm.nih.gov/gene/7023" target="_blank">7023</a></td></tr>
<tr><td class="label">Ensembl</td><td>ENSG00000130247</td></tr>
<tr><td class="label">OMIM</td><td><a href="https://omim.org/entry/601681" target="_blank">601681</a></td></tr>
<tr><td class="label">UniProt</td><td><a href="https://www.uniprot.org/uniprot/Q01658" target="_blank">Q01658</a></td></tr>
<tr><td class="label">Protein Class</td><td>bZIP Transcription Factor</td></tr>
<tr><td class="label">Expression</td><td>Cerebral [cortex](/brain-regions/cortex), [Hippocampus](/brain-regions/hippocampus), Cerebellum, Widespread</td></tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/aging" style="color:#ef9a9a">Aging</a>, <a href="/wiki/cardiovascular" style="color:#ef9a9a">Cardiovascular</a>, <a href="/wiki/coronary-artery-disease" style="color:#ef9a9a">Coronary Artery Disease</a>, <a href="/wiki/longevity" style="color:#ef9a9a">Longevity</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">11 edges</a></td>
</tr>
</table>

TFAP4 — Transcription Factor AP-4

Introduction

Tfap4 — Transcription Factor Ap 4 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

TFAP4 (Transcription Factor AP-4) is a gene located on chromosome 16p13.3 encoding the AP-4 transcription factor, a member of the basic leucine zipper (bZIP) family of transcription factors["@ref"]. TFAP4 functions as a transcriptional activator that binds to the symmetric DNA sequence CAGTGT and regulates genes involved in cell growth, differentiation, and neuronal development["^2"]. The gene is catalogued as NCBI Gene ID 7023.

Gene Overview

| Property | Value |
|----------|-------|
| Gene Symbol | TFAP4 |
| Full Name | Transcription Factor AP-4 |
| Chromosomal Location | 16p13.3 |
| NCBI Gene ID | 7023 |
| Ensembl ID | ENSG00000130247 |
| OMIM ID | 601681 |
| UniProt ID | Q01658 |
| Protein Length | 641 amino acids |
| Molecular Weight | ~71 kDa |

Protein Structure

TFAP4 contains several functional domains:

• N-terminal transcriptional activation domain: Rich in acidic residues, mediates interaction with transcriptional coactivators
• Basic DNA-binding domain: Recognizes the CAGTGT consensus sequence
• Leucine zipper dimerization domain: Enables homodimer and heterodimer formation with other bZIP proteins

The protein localizes primarily to the nucleus where it functions as a sequence-specific DNA-binding transcription factor[^3].

Normal Function

Transcriptional Regulation

TFAP4 regulates the expression of numerous target genes:

• Cell cycle regulators: Controls genes involved in cell proliferation and cell cycle progression
• Developmental genes: Regulates genes important for neuronal differentiation and development
• Metabolic enzymes: Modulates expression of metabolic genes in various tissues

Neuronal Expression and Function

In the brain, TFAP4 is expressed in:

• Cerebral cortex: Layer-specific expression in pyramidal [neurons](/entities/neurons)
• Hippocampus: CA1-CA3 regions and dentate gyrus
• Cerebellum: Purkinje cells and granule cells
• Subventricular zone: Neural stem cell populations

TFAP4 plays roles in:

• Neuronal differentiation: Promotes exit from the cell cycle and differentiation into mature neurons
• Synaptic plasticity: Regulates genes important for synaptic function and plasticity
• Axonal guidance: Controls expression of guidance molecules during development

Disease Associations

Neurodevelopmental Disorders

TFAP4 mutations have been associated with:

• Intellectual disability: Developmental delay and cognitive impairment
• Autism spectrum disorders: Social and communication deficits
• Speech and language disorders: Delayed speech development

Neurodegenerative Disease Research

While TFAP4 is not a primary disease-causing gene in major neurodegenerative diseases, it may play modulatory roles:

• Alzheimer's disease: May influence neuronal survival pathways and amyloid processing
• Parkinson's disease: Potential role in dopaminergic neuron function
• Amyotrophic lateral sclerosis: Possible involvement in motor neuron biology

Therapeutic Implications

Research Tools

• CRISPR knockout models: TFAP4-deficient cell lines and mouse models
• Reporter assays: TFAP4-responsive luciferase reporters
• ChIP-seq: Genome-wide binding site mapping

Potential Therapeutic Targets

• Modulating TFAP4 activity: Small molecules affecting TFAP4 DNA binding
• Gene therapy approaches: Targeting TFAP4 expression in specific brain regions
• Combination therapies: TFAP4 modulation with other neuroprotective strategies

Brain Atlas Resources

• [Allen Brain Atlas: TFAP4 expression](https://human.brain-map.org/microarray/search/show?search_term=TFAP4)
• [Allen Mouse Brain Atlas: Tfap4](https://mouse.brain-map.org/search/index.html?query=Tfap4)
• [Allen Cell Type Atlas](https://portal.brain-map.org/atlases-and-data/rnaseq)
• [BrainSpan: Developmental TFAP4 expression](https://www.brainspan.org)

Background

The study of Tfap4 — Transcription Factor Ap 4 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.

Cross-References

• [Genes Index](/genes)
• [Transcription Factors](/mechanisms/transcription-regulation)
• [Neuronal Development](/mechanisms/neuronal-development)
• [Neurodevelopmental Disorders](/diseases/neurodevelopmental-disorders)

See Also

• [Genes Index](/genes)
• [Proteins Index](/proteins)
• [Mechanisms Index](/mechanisms)

External Links

• [NCBI Gene: TFAP4](https://www.ncbi.nlm.nih.gov/gene/7023)
• [UniProt: Q01658](https://www.uniprot.org/uniprot/Q01658)
• [OMIM: 601681](https://omim.org/entry/601681)
• [Ensembl: ENSG00000130247](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000130247)

References

Unknown, : : (n.d.)

Pathway Diagram

The following diagram shows the key molecular relationships involving TFAP4 — Transcription Factor AP-4 discovered through SciDEX knowledge graph analysis: