STK25 Protein

STK25 Protein

Introduction

<table class="infobox infobox-protein">
<tr>
<th class="infobox-header" colspan="2">STK25 Protein</th>
</tr>
<tr>
<td class="label">Gene Symbol</td>
<td>STK25</td>
</tr>
<tr>
<td class="label">Protein Name</td>
<td>Serine/Threonine Kinase 25</td>
</tr>
<tr>
<td class="label">Alternative Names</td>
<td>YSK1, SOK1, SOK2</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>Q9Y2Q8</td>
</tr>
<tr>
<td class="label">Molecular Weight</td>
<td>~46 kDa</td>
</tr>
<tr>
<td class="label">Protein Family</td>
<td>STE20 family, MAP4K group</td>
</tr>
<tr>
<td class="label">Subcellular Localization</td>
<td>Golgi apparatus, cytoplasm</td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">2 edges</a></td>
</tr>
</table>

Stk25 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.

Overview

STK25 (Serine/Threonine Kinase 25), also known as YSK1 (Yeast Sterile 20-like Kinase 1), is a member of the Ste20-like serine/threonine protein kinase family. STK25 is closely related to STK24 (MST3) and plays important roles in stress-activated signaling, cell polarity, and neuronal development. The protein is localized to the Golgi apparatus and regulates various cellular processes [@millis1999][@preisinger2004].

Protein Information

Structure

STK25 Protein

Introduction

<table class="infobox infobox-protein">
<tr>
<th class="infobox-header" colspan="2">STK25 Protein</th>
</tr>
<tr>
<td class="label">Gene Symbol</td>
<td>STK25</td>
</tr>
<tr>
<td class="label">Protein Name</td>
<td>Serine/Threonine Kinase 25</td>
</tr>
<tr>
<td class="label">Alternative Names</td>
<td>YSK1, SOK1, SOK2</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>Q9Y2Q8</td>
</tr>
<tr>
<td class="label">Molecular Weight</td>
<td>~46 kDa</td>
</tr>
<tr>
<td class="label">Protein Family</td>
<td>STE20 family, MAP4K group</td>
</tr>
<tr>
<td class="label">Subcellular Localization</td>
<td>Golgi apparatus, cytoplasm</td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">2 edges</a></td>
</tr>
</table>

Stk25 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.

Overview

STK25 (Serine/Threonine Kinase 25), also known as YSK1 (Yeast Sterile 20-like Kinase 1), is a member of the Ste20-like serine/threonine protein kinase family. STK25 is closely related to STK24 (MST3) and plays important roles in stress-activated signaling, cell polarity, and neuronal development. The protein is localized to the Golgi apparatus and regulates various cellular processes [@millis1999][@preisinger2004].

Protein Information

Structure

STK25 contains characteristic Ste20-like kinase features:

STK25 can form heterodimers with STK24 and STK23 [@hu2004].

Normal Function

Stress Signaling

STK25 participates in stress-activated pathways:

• p38 MAPK activation — Phosphorylates MKK3/MKK6
• JNK pathway — Can activate JNK signaling
• Oxidative stress response — Activated by [reactive oxygen species](/entities/reactive-oxygen-species)
• Cell survival — Modulates apoptotic pathways

Cell Polarity

STK25 regulates cell polarity:

• Golgi organization — Maintains Golgi apparatus structure
• Cell migration — Controls directional cell movement
• Asymmetric cell division — Regulates polarity proteins

Neuronal Functions

In [neurons](/entities/neurons):

• Axon guidance — Regulates growth cone dynamics
• Neuronal migration — Important for cortical development
• Synaptic function — Modulates synaptic plasticity [@zhang2007][@liu2013]

Role in Neurodegeneration

Alzheimer's Disease

STK25 is implicated in AD:

• [Tau](/proteins/tau) pathology — May contribute to tau phosphorylation
• Neuronal dysfunction — Altered in AD brains
• Synaptic loss — Associated with synaptic deficits

Parkinson's Disease

• Dopaminergic neuron survival — Regulates survival pathways
• Mitochondrial function — Affects mitochondrial dynamics

Stroke

• Ischemic injury — Activated after stroke
• Neuroprotection — Potential therapeutic target [@zhou2019]

Key Publications

See Also

• [STK25 Gene](/genes/stk25)
• [STK24 Gene](/genes/stk24)
• [Signal Transduction](/mechanisms/signal-transduction)
• [Alzheimer's Disease](/diseases/alzheimers-disease)

Background

The study of Stk25 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.

External Links

• [PubMed](https://pubmed.ncbi.nlm.nih.gov/) - Biomedical literature
• [Alzheimer's Disease Neuroimaging Initiative](https://adni.loni.usc.edu/) - Research data
• [Allen Brain Atlas](https://brain-map.org/) - Brain gene expression data

References