ClC-7 Chloride Channel

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ClC-7 Chloride Channel

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ClC-7 Chloride Channel

Introduction

<table class="infobox infobox-protein">
<tr>
<th class="infobox-header" colspan="2">ClC-7 Chloride Channel</th>
</tr>
<tr>
<td class="label">Protein Name</td>
<td>ClC-7 Chloride Channel</td>
</tr>
<tr>
<td class="label">Gene</td>
<td>CLCN7</td>
</tr>
<tr>
<td class="label">UniProt</td>
<td>P51798</td>
</tr>
<tr>
<td class="label">Molecular Weight</td>
<td>~89 kDa</td>
</tr>
<tr>
<td class="label">Subcellular Localization</td>
<td>Late endosomes, lysosomes</td>
</tr>
<tr>
<td class="label">Protein Family</td>
<td>CLC chloride channel family</td>
</tr>
<tr>
<td class="label">Tissue Expression</td>
<td>Ubiquitous (brain, bone, kidney, liver)</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/cardiovascular" style="color:#ef9a9a">Cardiovascular</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">24 edges</a></td>
</tr>
</table>

Clc 7 Chloride Channel is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.

[@stauber2012]

...

ClC-7 Chloride Channel

Introduction

[@stauber2012]

ClC-7 (Chloride Channel Protein 7) is a voltage-gated chloride channel belonging to the CLC chloride channel family, with critical intracellular localization in late endosomes and lysosomes Citation needed. It is widely expressed in [neurons](/entities/neurons) and peripheral tissues, where it plays essential roles in lysosomal function and cellular homeostasis Citation needed. [@weinert2020]

Overview

CLCN7 (Chloride Voltage-Gated Channel 7) is a gene located on chromosome 3p21.31. The encoded protein is a voltage-gated chloride channel involved in cellular ion homeostasis, acidification of intracellular compartments, and neuronal function. CLCN7 mutations are associated with neurodegenerative diseases and lysosomal storage disorders. [@kornak2001]

Basic Information

Structure

ClC-7 shares the canonical CLC channel architecture with several important features [Citation needed]:

18 transmembrane helices organized into two distinct domains
Dimeric assembly forming two independent chloride conduction pathways
Conserved gating glutamate (E166) essential for Cl-/H+ antiport mechanism
Extended C-terminal domain with regulatory functions

The dimeric quaternary structure is essential for proper channel function, with each monomer forming its own pore Citation needed.

Normal Function

Expression Pattern

ClC-7 exhibits broad expression throughout the body [Citation needed]:

Brain: High expression in neurons, especially in [hippocampus](/brain-regions/hippocampus) and [cortex](/brain-regions/cortex)
Bone: Osteoclasts highly express ClC-7 for bone resorption
Kidney: Proximal tubule cells
Liver: Hepatocytes
Peripheral tissues: Moderate expression in most organs

Cellular Localization

ClC-7 is primarily an intracellular channel [Citation needed]:

Late endosomes: Primary localization site in neurons
Lysosomes: Critical for lysosomal acidification and function
Osteoclast ruffled border: Required for bone resorption
Synaptic vesicles: Potential role in synaptic function

Physiological Roles

ClC-7 serves essential physiological functions [Citation needed]:

Lysosomal acidification: Provides counter-transport for proper proton pump function

Cellular homeostasis: Maintains intracellular chloride concentrations

Bone remodeling: Essential for osteoclast-mediated bone resorption

[Autophagy](/entities/autophagy): Critical for autophagosome-lysosome fusion and function

Neuronal survival: Protects against lysosomal stress

Role in Disease

Neurodegeneration

ClC-7 dysfunction has been strongly implicated in neurodegenerative processes [Citation needed]:

Alzheimer's Disease

Altered lysosomal function in AD neurons involves ClC-7 dysregulation Citation needed
May contribute to [amyloid-beta](/proteins/amyloid-beta) accumulation through impaired lysosomal clearance Citation needed
Potential therapeutic target for enhancing lysosomal function Citation needed

Parkinson's Disease

Lysosomal dysfunction in PD involves CLCN7 variants Citation needed
May affect [alpha-synuclein](/mechanisms/alpha-synuclein) clearance through altered autophagy Citation needed
Interaction with GBA and other lysosomal genes in PD risk Citation needed

Lysosomal Storage Disorders

Osteopetrosis: Dominant and recessive CLCN7 mutations cause severe skeletal sclerosis Citation needed
Neuronal ceroid lipofuscinoses: ClC-7 dysfunction contributes to lipofuscin accumulation Citation needed
Neurodegeneration with brain iron accumulation (NBIA): Possible modifier role Citation needed

Clinical Significance

Osteopetrosis

CLCN7 mutations cause different forms of osteopetrosis [Citation needed]:

Autosomal dominant osteopetrosis (ADO): Typically milder, adult-onset
Autosomal recessive osteopetrosis (ARO): Severe, infantile-onset with neurodegeneration

Neurodegeneration

ClC-7-related neurodegeneration involves [Citation needed]:

Progressive lysosomal storage
Neuronal dysfunction and death
Seizures and developmental regression

Therapeutic Implications

Therapeutic strategies targeting ClC-7 include [Citation needed]:

Chloride channel modulators: Small molecules to enhance or inhibit activity

Gene therapy: Viral vector delivery of wild-type CLCN7

Lysosomal function enhancement: Boosting downstream pathways

Bone-targeted therapies: For osteopetrosis manifestations

Research Directions

Unresolved Questions

Key questions about ClC-7 remain [Citation needed]:

How does ClC-7 specifically contribute to neurodegeneration?

What are the precise molecular mechanisms of disease-causing mutations?

Can small molecule modulators be developed for clinical use?

What is the relationship between neuronal and skeletal phenotypes?

Emerging Research

Recent advances in ClC-7 research include [Citation needed]:

Cryo-EM structures: Detailed architecture of ClC-7 and its dimerization
iPSC models: Patient-derived neurons to study CLCN7 mutations
Animal models: Knockout mice revealing tissue-specific functions
Clinical trials: Gene therapy approaches for osteopetrosis

Background

The study of Clc 7 Chloride Channel 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

[CLCN7 Gene](/genes/clcn7)
[ClC](/proteins/clcn6-protein)
[ClC](/proteins/clcn3-protein)
[ClC](/proteins/clcn4-protein)
[Endosomal](/mechanisms/dopaminergic-neuron-vulnerability)
[Lysosomal Storage Disorders](/diseases/lysosomal-storage-disorders)
[Osteopetrosis](/mechanisms/dopaminergic-neuron-vulnerability)

References

[Jentsch TJ, et al, (1999) (1999)](https://pubmed.ncbi.nlm.nih.gov/10099684/)

[Stauber T, et al, (2012) (2012)](https://pubmed.ncbi.nlm.nih.gov/22094550/)

[Weinert S, et al, (2020) (2020)](https://pubmed.ncbi.nlm.nih.gov/32078021/)

[Kornak U, et al, (2001) (2001)](https://pubmed.ncbi.nlm.nih.gov/11719191/)

[Nguyen Y, et al, (2020) (2020)](https://pubmed.ncbi.nlm.nih.gov/32705415/)

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Related Entities

CLCN7PROTEIN

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slug	proteins-clcn7-protein
kg_node_id	CLCN7PROTEIN
entity_type	protein
origin_type	v1_polymorphic_backfill
source_table	wiki_pages
wiki_page_id	wp-70c6b0a0da79
__merged_from	{'merged_at': '2026-05-13', 'unprefixed_id': 'proteins-clcn7-protein'}
_schema_version	1

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📗 Cite This Artifact

ClC-7 Chloride Channel

ClC-7 Chloride Channel

Introduction

ClC-7 Chloride Channel

Introduction

Overview

Basic Information

Structure

Normal Function

Expression Pattern

Cellular Localization

Physiological Roles

Role in Disease

Neurodegeneration

Alzheimer's Disease

Parkinson's Disease

Lysosomal Storage Disorders

Clinical Significance

Osteopetrosis

Neurodegeneration

Therapeutic Implications

Research Directions

Unresolved Questions

Emerging Research

See Also

Background

External Links

Related Pages

References

💬 Discussion