TNKS2 Gene

TNKS2 Gene

Introduction

Tnks2 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.

Overview

The TNKS2 gene (Tankyrase 2) encodes a poly(ADP-ribose) polymerase protein involved in various cellular processes including Wnt signaling, telomere biology, and protein degradation. Located on chromosome 8p23.1, TNKS2 is expressed in many tissues including the brain, where it plays roles in neuronal development and function. [@guettler2021]

<div class="infobox infobox-gene"> [@sbodio2020]
<table> [@nagy2019]
<tr><th colspan="2" style="background:#e8f4ea;">Gene Information</th></tr> [@yang2018]
<tr><td><strong>Gene Symbol</strong></td><td>TNKS2</td></tr> [@hsiao2020]
<tr><td><strong>Full Name</strong></td><td>Tankyrase 2</td></tr>
<tr><td><strong>Chromosomal Location</strong></td><td>8p23.1</td></tr>
<tr><td><strong>NCBI Gene ID</strong></td><td>56651</td></tr>
<tr><td><strong>OMIM ID</strong></td><td>607341</td></tr>
<tr><td><strong>Ensembl ID</strong></td><td>ENSG00000137101</td></tr>
<tr><td><strong>UniProt ID</strong></td><td>Q9H2K2</td></tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">1 edges</a></td>
</tr>
</table>
</div>

Gene Structure

The TNKS2 gene spans approximately 47 kb and consists of 24 exons encoding a 1206 amino acid protein. Like its paralog TNKS1, TNKS2 contains:

TNKS2 Gene

Introduction

Tnks2 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.

Overview

The TNKS2 gene (Tankyrase 2) encodes a poly(ADP-ribose) polymerase protein involved in various cellular processes including Wnt signaling, telomere biology, and protein degradation. Located on chromosome 8p23.1, TNKS2 is expressed in many tissues including the brain, where it plays roles in neuronal development and function. [@guettler2021]

<div class="infobox infobox-gene"> [@sbodio2020]
<table> [@nagy2019]
<tr><th colspan="2" style="background:#e8f4ea;">Gene Information</th></tr> [@yang2018]
<tr><td><strong>Gene Symbol</strong></td><td>TNKS2</td></tr> [@hsiao2020]
<tr><td><strong>Full Name</strong></td><td>Tankyrase 2</td></tr>
<tr><td><strong>Chromosomal Location</strong></td><td>8p23.1</td></tr>
<tr><td><strong>NCBI Gene ID</strong></td><td>56651</td></tr>
<tr><td><strong>OMIM ID</strong></td><td>607341</td></tr>
<tr><td><strong>Ensembl ID</strong></td><td>ENSG00000137101</td></tr>
<tr><td><strong>UniProt ID</strong></td><td>Q9H2K2</td></tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">1 edges</a></td>
</tr>
</table>
</div>

Gene Structure

The TNKS2 gene spans approximately 47 kb and consists of 24 exons encoding a 1206 amino acid protein. Like its paralog TNKS1, TNKS2 contains:

• Ankyrin repeat clusters (ANK) for protein-protein interactions
• Sterile alpha motif (SAM) domains for oligomerization
• A catalytic PARP (poly-ADP-ribose polymerase) domain
• A regulatory (REG) domain

Expression Pattern

Brain Expression

• Expressed in various brain regions including [cortex](/brain-regions/cortex), [hippocampus](/brain-regions/hippocampus), and cerebellum
• Higher expression during development
• Cell type-specific expression in [neurons](/entities/neurons) and glia

Peripheral Tissues

• Widely expressed in peripheral tissues
• High expression in testis, ovary, and proliferating cells

Normal Function

Wnt Signaling Regulation

Telomere Biology

Protein Quality Control

Disease Associations

Cancer

• Overexpression in multiple cancer types including colorectal, breast, and lung cancer
• May cooperate with TNKS1 in promoting tumorigenesis
• Dual targeting of both tankyrases under investigation

Neurodegeneration

• Potential roles in protein quality control relevant to AD/PD
• Wnt signaling dysregulation in neurodegenerative diseases

Metabolic Disorders

• Associations with glucose homeostasis
• Potential roles in obesity and diabetes

Therapeutic Implications

| Approach | Agent | Stage | Notes |
|----------|-------|-------|-------|
| Dual tankyrase inhibition | XAV939 derivatives | Preclinical | Inhibit both TNKS1 and TNKS2 |
| Selective TNKS2 targeting | Research compounds | Early | Limited availability |
| Combination therapy | Tankyrase + Wnt inhibitors | Preclinical | Cancer applications |

Animal Models

• TNKS2 knockout mice are viable and fertile
• Show mild phenotypes compared to TNKS1 knockouts
• Double knockout (TNKS1/TNKS2) causes embryonic lethality
• Conditional knockouts under development

See Also

• [TNKS2 Protein](/proteins/tnks2-protein)
• [TNKS Gene](/proteins/tnks-protein)
• [Wnt Signaling Pathway](/mechanisms/wnt-signaling)
• [PARP Proteins](/entities/parp-proteins)
• [Tankyrase Inhibitors](/therapeutics/tankyrase-inhibitors)

External Links

• [NCBI Gene: TNKS2](https://www.ncbi.nlm.nih.gov/gene/56651)
• [OMIM: TNKS2](https://www.omim.org/entry/607341)
• [UniProt: Q9H2K2](https://www.uniprot.org/uniprot/Q9H2K2)
• [Ensembl: TNKS2](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000137101)

Background

The study of Tnks2 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