PRKRA Protein

PRKRA Protein

Overview

<table class="infobox infobox-protein">
<tr>
<th class="infobox-header" colspan="2">PRKRA Protein</th>
</tr>
<tr>
<td class="label">Protein Name</td>
<td>Protein Activator of PKR (PACT)</td>
</tr>
<tr>
<td class="label">Gene</td>
<td>PRKRA</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>Q9UBU2</td>
</tr>
<tr>
<td class="label">PDB Structures</td>
<td>4OVU, 6A5L</td>
</tr>
<tr>
<td class="label">Molecular Weight</td>
<td>34.6 kDa</td>
</tr>
<tr>
<td class="label">Subcellular Localization</td>
<td>Cytoplasmic and nuclear</td>
</tr>
<tr>
<td class="label">Protein Family</td>
<td>dsRNA-binding protein family</td>
</tr>
<tr>
<td class="label">Approach</td>
<td>Target</td>
</tr>
<tr>
<td class="label">Small molecule inhibitors</td>
<td>Stress granule assembly</td>
</tr>
<tr>
<td class="label">siRNA knockdown</td>
<td>Specific stress granule proteins</td>
</tr>
<tr>
<td class="label">Gene therapy</td>
<td>Restore normal PACT function</td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">1 edges</a></td>
</tr>
</table>

Prkra Protein plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.

Introduction

PRKRA Protein

Overview

<table class="infobox infobox-protein">
<tr>
<th class="infobox-header" colspan="2">PRKRA Protein</th>
</tr>
<tr>
<td class="label">Protein Name</td>
<td>Protein Activator of PKR (PACT)</td>
</tr>
<tr>
<td class="label">Gene</td>
<td>PRKRA</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>Q9UBU2</td>
</tr>
<tr>
<td class="label">PDB Structures</td>
<td>4OVU, 6A5L</td>
</tr>
<tr>
<td class="label">Molecular Weight</td>
<td>34.6 kDa</td>
</tr>
<tr>
<td class="label">Subcellular Localization</td>
<td>Cytoplasmic and nuclear</td>
</tr>
<tr>
<td class="label">Protein Family</td>
<td>dsRNA-binding protein family</td>
</tr>
<tr>
<td class="label">Approach</td>
<td>Target</td>
</tr>
<tr>
<td class="label">Small molecule inhibitors</td>
<td>Stress granule assembly</td>
</tr>
<tr>
<td class="label">siRNA knockdown</td>
<td>Specific stress granule proteins</td>
</tr>
<tr>
<td class="label">Gene therapy</td>
<td>Restore normal PACT function</td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">1 edges</a></td>
</tr>
</table>

Prkra Protein plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.

Introduction

Prkra Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes. [@miller2019]

PRKRA (Protein Activator of Interferon Induced Protein Kinase), also known as PACT, is a key regulator of cellular stress responses, stress granule assembly, and antiviral immunity. [@cuccurazzu2018]

Protein Overview

Structure

Domain Architecture:

• N-terminal dsRNA-binding Domain: Two dsRNA-binding motifs (dsRBMs)
• C-terminal Domain: Mediates protein-protein interactions
• Linker Region: Flexible region connecting N- and C-terminal domains

Structural Features:

• dsRBMs are highly conserved and bind double-stranded RNA non-specifically
• The C-terminal domain interacts with multiple protein partners
• Forms homodimers and heterodimers with TRBP

Normal Function

Stress Response:

• PKR Activation: PACT directly activates PKR in response to viral infection and cellular stress
• Stress Granule Assembly: Essential component of stress granule machinery
• RIG-I Signaling: Regulates RIG-I mediated antiviral response

RNA Processing:

• Associates with Dicer in the microRNA processing pathway
• Functions as a co-factor for RNA interference

Apoptosis Regulation:

• Can promote or inhibit [apoptosis](/entities/apoptosis) depending on context
• PKR-dependent and independent pathways

Role in Disease

ALS:

• PRKRA mutations cause familial ALS
• Mutant PACT forms abnormal stress granules
• Disrupted stress granule dynamics lead to neuronal death
• Impaired antiviral response may contribute to neurodegeneration

Dystonia:

• DBM (dystonia with mitochondrial mutation) syndrome
• Early-onset generalized dystonia with tremor
• Mutations affect stress granule formation

Parkinson's Disease:

• Dysregulated stress response pathways
• Impaired stress granule dynamics
• May contribute to [alpha-synuclein](/mechanisms/alpha-synuclein) pathology

Therapeutic Targeting

Stress Granule Modulators:

Antiviral Strategies:

• Targeting PACT-PKR interaction for antiviral therapy
• Understanding stress response in neurodegeneration

Overview

Prkra Protein plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.

Background

The study of Prkra Protein 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

• [Related Topics](/index)

External Links

References