TLR6 Protein

TLR6 Protein - Toll-Like Receptor 6

Introduction

Tlr6 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.

<div class="infobox .infobox-protein"> [@kim2014]
<table>
<tr><th colspan="2" style="background:#f0f0f0;">Protein Information</th></tr>
<tr><td><strong>Protein Name</strong></td><td>Toll-Like Receptor 6 (TLR6)</td></tr>
<tr><td><strong>Gene</strong></td><td>TLR6</td></tr>
<tr><td><strong>UniProt ID</strong></td><td>Q9NYK5</td></tr>
<tr><td><strong>PDB Structure</strong></td><td>2Z7X</td></tr>
<tr><td><strong>Molecular Weight</strong></td><td>~91 kDa</td></tr>
<tr><td><strong>Subcellular Localization</strong></td><td>Cell membrane, Endosomes</td></tr>
<tr><td><strong>Protein Family</strong></td><td>Toll-Like Receptor Family</td></tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/alzheimer" style="color:#ef9a9a">Alzheimer</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">12 edges</a></td>
</tr>
</table>
</div>

Overview

TLR6 (Toll-Like Receptor 6) is a pattern recognition receptor that typically functions as a co-receptor with TLR2 for recognition of bacterial and fungal components. TLR6 recognizes peptidoglycan, lipoproteins, and zymosan, triggering innate immune responses. It is expressed in various immune cells and has been implicated in neuroinflammatory conditions.

Structure

TLR6 Protein - Toll-Like Receptor 6

Introduction

Tlr6 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.

<div class="infobox .infobox-protein"> [@kim2014]
<table>
<tr><th colspan="2" style="background:#f0f0f0;">Protein Information</th></tr>
<tr><td><strong>Protein Name</strong></td><td>Toll-Like Receptor 6 (TLR6)</td></tr>
<tr><td><strong>Gene</strong></td><td>TLR6</td></tr>
<tr><td><strong>UniProt ID</strong></td><td>Q9NYK5</td></tr>
<tr><td><strong>PDB Structure</strong></td><td>2Z7X</td></tr>
<tr><td><strong>Molecular Weight</strong></td><td>~91 kDa</td></tr>
<tr><td><strong>Subcellular Localization</strong></td><td>Cell membrane, Endosomes</td></tr>
<tr><td><strong>Protein Family</strong></td><td>Toll-Like Receptor Family</td></tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/alzheimer" style="color:#ef9a9a">Alzheimer</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">12 edges</a></td>
</tr>
</table>
</div>

Overview

TLR6 (Toll-Like Receptor 6) is a pattern recognition receptor that typically functions as a co-receptor with TLR2 for recognition of bacterial and fungal components. TLR6 recognizes peptidoglycan, lipoproteins, and zymosan, triggering innate immune responses. It is expressed in various immune cells and has been implicated in neuroinflammatory conditions.

Structure

TLR6 is a type I transmembrane protein:

Domain Architecture

• Signal peptide: N-terminal signal peptide
• Leucine-rich repeats (LRRs): 20 LRR motifs in extracellular domain
• LRR C-terminal flanking region: Important for ligand recognition
• Transmembrane domain: Single pass transmembrane helix
• TIR domain: Intracellular signaling domain

Structure-Function

• Functions primarily as heterodimer with TLR2
• LRR domain recognizes lipoproteins and fungal products

Normal Function

TLR6 plays important roles in innate immunity:

Immune Recognition

• Pattern recognition: Recognizes peptidoglycan, lipoproteins, zymosan
• Heterodimer formation: Primarily pairs with TLR2
• Co-receptor function: Modulates TLR2 ligand specificity

Signaling Pathways

Cellular Functions

• Immune cell activation: Activates macrophages, [microglia](/cell-types/microglia-neuroinflammation)
• Cytokine production: Induces inflammatory mediators
• Host defense: Anti-bacterial and anti-fungal responses

Role in Disease

Alzheimer Disease

• TLR6 variants may modify AD risk
• Recognition of amyloid-associated microbial products
• TLR6+ microglia in AD brain regions

Parkinson Disease

• TLR6 signaling in PD through TLR2/TLR6 heterodimers
• Microglial activation by [alpha-synuclein](/mechanisms/alpha-synuclein) may involve TLR6

Multiple Sclerosis

• TLR6 in MS pathogenesis
• Modulates autoimmune demyelination

Expression

| Cell Type | Expression Level | Notes |
|----------|-----------------|-------|
| Monocytes | High | Primary peripheral expression |
| Macrophages | High | Tissue macrophages |
| Microglia | Moderate | Brain immune cells |
| B Cells | Moderate | Some expression |
| Mast Cells | High | Allergic responses |

Therapeutic Targeting

| Approach | Agent | Status | Notes |
|----------|-------|--------|-------|
| TLR6 Modulators | Synthetic ligands | Research | Agonists/antagonists |
| Dual TLR2/TLR6 | Small molecule inhibitors | Investigational | Combined targeting |
| Anti-inflammatory | Natural compounds | Preclinical | Pathway modulation |

Protein Interactions

• TLR2: Primary heterodimer partner
• MyD88: Primary adaptor protein
• TIRAP: Adaptor protein
• Mal: Signaling adaptor

Background

The study of Tlr6 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

• TLR6 Gene
• [TLR2](/genes/tlr2)
• [Toll-Like Receptors](/mechanisms/toll-like-receptor-signaling)
• [Neuroinflammation](/mechanisms/neuroinflammation-pathway)
• [Microglia](/cell-types/microglia)

External Links

• [UniProt: TLR6](https://www.uniprot.org/uniprot/Q9NYK5)
• [PDB: TLR6](https://www.ebi.ac.uk/pdbe/pdbe-search?targetUrl=http://www.ebi.ac.uk/pdbe/entry/pdb/2z7x)
• [NCBI Protein: TLR6](https://www.ncbi.nlm.nih.gov/protein/10333)

References