COQ7 Gene

COQ7 Gene

Introduction

Coq7 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

COQ7 Gene (Coenzyme Q Biosynthesis Factor 7) provides instructions for making the COQ7 protein, also known as coenzyme Q7 or mitochondrial coenzyme Q hydroxylase. This enzyme catalyzes the 5-hydroxylation step in coenzyme Q (CoQ10) biosynthesis, converting demethoxy-ubiquinone (DMQ) to produce ubiquinone (CoQ10), the essential electron carrier in the mitochondrial respiratory chain. [@wang2016]

Gene Information

<div class="infobox infobox-gene"> [@zhang2017]
<table> [@hargreaves2014]
<tr><th>Gene Symbol</th><td>COQ7</td></tr>
<tr><th>Full Name</th><td>Coenzyme Q Biosynthesis Factor 7</td></tr>
<tr><th>Chromosomal Location</th><td>16p13.3</td></tr>
<tr><th>NCBI Gene ID</th><td>10277</td></tr>
<tr><th>OMIM</th><td>609697</td></tr>
<tr><th>Ensembl ID</th><td>ENSG00000109113</td></tr>
<tr><th>UniProt ID</th><td>Q9UQB8</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 COQ7 gene contains:

• Exons: 5 coding exons
• Transcript length: ~1.0 kb coding sequence
• Protein length: 248 amino acids
• Molecular weight: ~25 kDa

Normal Function

CoQ10 Biosynthesis

COQ7 encodes a diiron hydroxylase that catalyzes:

COQ7 Gene

Introduction

Coq7 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

COQ7 Gene (Coenzyme Q Biosynthesis Factor 7) provides instructions for making the COQ7 protein, also known as coenzyme Q7 or mitochondrial coenzyme Q hydroxylase. This enzyme catalyzes the 5-hydroxylation step in coenzyme Q (CoQ10) biosynthesis, converting demethoxy-ubiquinone (DMQ) to produce ubiquinone (CoQ10), the essential electron carrier in the mitochondrial respiratory chain. [@wang2016]

Gene Information

<div class="infobox infobox-gene"> [@zhang2017]
<table> [@hargreaves2014]
<tr><th>Gene Symbol</th><td>COQ7</td></tr>
<tr><th>Full Name</th><td>Coenzyme Q Biosynthesis Factor 7</td></tr>
<tr><th>Chromosomal Location</th><td>16p13.3</td></tr>
<tr><th>NCBI Gene ID</th><td>10277</td></tr>
<tr><th>OMIM</th><td>609697</td></tr>
<tr><th>Ensembl ID</th><td>ENSG00000109113</td></tr>
<tr><th>UniProt ID</th><td>Q9UQB8</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 COQ7 gene contains:

• Exons: 5 coding exons
• Transcript length: ~1.0 kb coding sequence
• Protein length: 248 amino acids
• Molecular weight: ~25 kDa

Normal Function

CoQ10 Biosynthesis

COQ7 encodes a diiron hydroxylase that catalyzes:

Role in Mitochondrial Respiration

Expression Pattern

COQ7 is expressed in most tissues:

• Brain - Throughout the CNS
• Heart - High in cardiac muscle
• Liver - Metabolic activity
• Kidney - Renal cortex
• Muscle - Skeletal muscle
• Adipose - Metabolic tissue

Brain Region Distribution

• Cerebral [Cortex](/brain-regions/cortex) - Pyramidal [neurons](/entities/neurons)
• [Hippocampus](/brain-regions/hippocampus) - CA1-CA3, dentate gyrus
• Cerebellum - Purkinje cells
• Basal Ganglia - Substantia nigra
• Brainstem - Various nuclei

Disease Associations

Primary CoQ10 Deficiency

COQ7 mutations cause primary CoQ10 deficiency:

• Encephalomyopathy - Severe neurological impairment
• Hypertrophic cardiomyopathy - Heart muscle disease
• Ataxia - Cerebellar ataxia
• Myopathy - Muscle weakness
• Hearing loss - Sensorineural deafness

Neurodegenerative Disease Connections

Parkinson's Disease

• Mitochondrial Complex I deficiency in PD
• CoQ10 levels reduced in PD brains
• COQ7 variants may influence PD risk
• CoQ10 trials conducted

Alzheimer's Disease

• Early mitochondrial dysfunction in AD
• CoQ10 levels decline with age
• Oxidative stress increased
• Therapeutic potential

Multiple System Atrophy

• CoQ10 deficiency in some patients
• Mitochondrial defects
• Potential target

Aging

• CoQ10 declines with age
• Contributes to mitochondrial dysfunction

Therapeutic Targeting

Current Approaches

| Treatment | Mechanism | Status |
|-----------|-----------|--------|
| Ubiquinol (CoQ10) | Electron carrier | Supplements |
| Idebenone | Synthetic analog | Approved |
| MitoQ | Mitochondria-targeted | Research |
| CoQ10 + vitamin E | Combined | Studies |

Future Directions

• Gene therapy
• Mitochondria-targeted antioxidants
• CoQ pathway activators
• Combination therapies

Animal Models

• Coq7 knockout mice - Embryonic lethal
• Zebrafish coq7 - Developmental defects
• C. elegans - Shortened lifespan

See Also

• [COQ7 Protein](/proteins/coq7-protein)
• [COQ5 Gene](/proteins/coq5-protein)
• [COQ6 Gene](/proteins/coq6-protein)
• [COQ9 Gene](/proteins/coq9-protein)
• [Coenzyme Q10](/therapeutics/coenzyme-q10-neurodegeneration)
• [Mitochondrial Dysfunction Pathway](/mechanisms/mitochondrial-dysfunction-pathway)
• [Parkinson's Disease](/diseases/parkinsons-disease)
• [Alzheimer's Disease](/diseases/alzheimers-disease)

External Links

• [NCBI Gene: COQ7](https://www.ncbi.nlm.nih.gov/gene/10277)
• [UniProt: Q9UQB8](https://www.uniprot.org/uniprot/Q9UQB8)
• [GeneCards: COQ7](https://www.genecards.org/cgi-bin/carddisp.pl?gene=COQ7)
• [OMIM: 609697](https://omim.org/entry/609697)

Background

The study of Coq7 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