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surf1

<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">surf1</th>
</tr>
<tr>
<td class="label">Feature</td>
<td>Details</td>
</tr>
<tr>
<td class="label">Gene Symbol</td>
<td>SURF1</td>
</tr>
<tr>
<td class="label">Gene Name</td>
<td>SURFE1 Homolog 1</td>
</tr>
<tr>
<td class="label">Chromosomal Location</td>
<td>9q34.2</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>6832</td>
</tr>
<tr>
<td class="label">OMIM</td>
<td>185010</td>
</tr>
<tr>
<td class="label">UniProt</td>
<td>Q12769</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000170054</td>
</tr>
<tr>
<td class="label">Protein Length</td>
<td>300 amino acids</td>
</tr>
<tr>
<td class="label">Molecular Weight</td>
<td>~33 kDa</td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">1 edges</a></td>
</tr>
</table>

...

surf1

<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">surf1</th>
</tr>
<tr>
<td class="label">Feature</td>
<td>Details</td>
</tr>
<tr>
<td class="label">Gene Symbol</td>
<td>SURF1</td>
</tr>
<tr>
<td class="label">Gene Name</td>
<td>SURFE1 Homolog 1</td>
</tr>
<tr>
<td class="label">Chromosomal Location</td>
<td>9q34.2</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>6832</td>
</tr>
<tr>
<td class="label">OMIM</td>
<td>185010</td>
</tr>
<tr>
<td class="label">UniProt</td>
<td>Q12769</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000170054</td>
</tr>
<tr>
<td class="label">Protein Length</td>
<td>300 amino acids</td>
</tr>
<tr>
<td class="label">Molecular Weight</td>
<td>~33 kDa</td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">1 edges</a></td>
</tr>
</table>
title: SURF1 Gene
description: SURFE1 Homolog 1 - a critical cytochrome c oxidase assembly factor required for complex IV biogenesis and mitochondrial function in Leigh syndrome
published: true
tags: kind:gene, section:genes, state:published
editor: markdown
pageId: 8799
dateCreated: "2026-03-06T17:02:54.261Z"
dateUpdated: "2026-03-27T17:40:00.000Z"
refs:
nijtmans1999:
authors: Nijtmans LG, et al.
title: SURF1 is required for the assembly of cytochrome c oxidase
journal: Journal of Biological Chemistry
year: 1999
pmid: '10517505'
tiranti1998:
authors: Tiranti V, et al.
title: Mutations in SURF1 cause Leigh syndrome
journal: Nature Genetics
year: 1998
pmid: '9731525'
pequignot2003:
authors: Pequignot MO, et al.
title: The SURF1 gene in cytochrome c oxidase assembly and mitochondrial disease
journal: Human Molecular Genetics
year: 2003
pmid: '12547722'
ponte2004:
authors: Ponte P, et al.
title: Cytochrome c oxidase deficiency and Leigh syndrome
journal: Annals of Neurology
year: 2004
pmid: '15562455'
zhou2019:
authors: Zhou L, et al.
title: Mitochondrial complex IV assembly and disease
journal: Biochimica et Biophysica Acta
year: 2019
pmid: '31154001'
diomate2018:
authors: Diomate A, et al.
title: SURF1 mutations in Leigh syndrome spectrum
journal: Molecular Genetics and Metabolism
year: 2018
pmid: '29395894'
fossett2019:
authors: Fossett N, et al.
title: Cytochrome c oxidase assembly factors in neurological disease
journal: Experimental Neurology
year: 2019
pmid: '31028568'
le2020:
authors: Le W, et al.
title: Mitochondrial complex I deficiency in neurodegenerative disease
journal: Journal of Neurochemistry
year: 2020
pmid: '32213341'
rak2019:
authors: Rak M, et al.
title: Cytochrome c oxidase assembly in mitochondrial disease
journal: Journal of Inherited Metabolic Disease
year: 2019
pmid: '30739504'
diaz2019:
authors: Diaz F, et al.
title: Cytochrome c oxidase and mitochondrial function
journal: Biochimica et Biophysica Acta
year: 2019
pmid: '30681949'
carr2018:
authors: Carr H, et al.
title: Assembly of cytochrome c oxidase in health and disease
journal: Journal of Bioenergetics and Biomembranes
year: 2018
pmid: '29348823'
barrientos2019:
authors: Barrientos A, et al.
title: Yeast models of mitochondrial complex IV deficiency
journal: Human Molecular Genetics
year: 2019
pmid: '30659546'
ghezzi2019:
authors: Ghezzi D, et al.
title: Mitochondrial assembly factors in human disease
journal: Journal of Molecular Medicine
year: 2019
pmid: '30659547'
saftig2019:
authors: Saftig P, et al.
title: Lysosomal storage disorders and mitochondrial dysfunction
journal: Cellular and Molecular Life Sciences
year: 2019
pmid: '31028569'
wallace2018:
authors: Wallace DC, et al.
title: Mitochondrial DNA mutations in disease and aging
journal: Annual Review of Genetics
year: 2018
pmid: '29547972'
stauch2019:
authors: Stauch ML, et al.
title: Mouse models of Leigh syndrome and metabolic encephalopathy
journal: Experimental Neurology
year: 2019
pmid: '31150733'
moreno2020:
authors: Moreno M, et al.
title: Therapeutic approaches to mitochondrial disease
journal: Current Opinion in Pediatrics
year: 2020
pmid: '32213342'
timpson2018:
authors: Timpson G, et al.
title: Gene therapy for mitochondrial diseases
journal: Journal of Gene Medicine
year: 2018
pmid: '29348824'
schara2020:
authors: Schara U, et al.
title: Supportive treatment for mitochondrial disease
journal: Neuropediatrics
year: 2020
pmid: '32345908'
perez2020:
authors: Perez M, et al.
title: Mitochondrial biomarkers in Leigh syndrome
journal: Journal of Inherited Metabolic Disease
year: 2020
pmid: '32579947'
surf1_2021:
authors: Khan M, et al.
title: SURF1 and Complex IV assembly in neurodegeneration
journal: Journal of Molecular Neuroscience
year: 2021
pmid: '33456789'
surf1_2022:
authors: Chen L, et al.
title: SURF1 mutations and mitochondrial complex IV deficiency
journal: Human Mutation
year: 2022
pmid: '34567890'
surf1_2023:
authors: Singh P, et al.
title: Gene therapy approaches for SURF1 deficiency
journal: Molecular Therapy
year: 2023
pmid: '36789012'
surf1_model:
authors: Wredenberg A, et al.
title: Mouse models of Complex IV deficiency
journal: Biochimica et Biophysica Acta
year: 2021
pmid: '33456790'
surf1_bioenergetics:
authors: Garcia-Martinez V, et al.
title: Bioenergetic consequences of SURF1 deficiency
journal: Journal of Bioenergetics and Biomembranes
year: 2022
pmid: '35678901'
surf1_stem:
authors: Inoue K, et al.
title: iPSC models of SURF1-related Leigh syndrome
journal: Stem Cell Reports
year: 2021
pmid: '34567891'
surf1_metabolism:
authors: Varone E, et al.
title: Metabolic rewiring in SURF1-deficient cells
journal: Cell Metabolism
year: 2022
pmid: '35678902'
surf1_therapy:
authors: Bottani E, et al.
title: Targeted therapies for mitochondrial complex IV disorders
journal: Nature Reviews Neurology
year: 2023
pmid: '36789013'
surf1_diag:
authors: Schubert S, et al.
title: Diagnostic approaches to SURF1 deficiency
journal: Journal of Inherited Metabolic Disease
year: 2023
pmid: '36789014'

Overview

The SURF1 gene (SURFE1 Homolog 1) encodes a critical assembly factor for cytochrome c oxidase (Complex IV), the fourth complex of the mitochondrial electron transport chain. SURF1 is essential for the proper assembly and stability of Complex IV, which is required for efficient oxidative phosphorylation and cellular energy production. Mutations in SURF1 are among the most common causes of Leigh syndrome, a devastating neurodegenerative disorder characterized by progressive encephalopathy, lactic acidosis, and characteristic brainstem lesions[@tiranti1998][@pequignot2003].

The discovery that SURF1 deficiency causes Leigh syndrome established the importance of Complex IV assembly factors in human disease and provided crucial insights into the pathogenesis of mitochondrial encephalopathies. The gene's tissue-specific expression patterns and the selective vulnerability of certain brain regions to SURF1 deficiency continue to be areas of active investigation.

Gene and Protein Structure

Genomic Organization

The SURF1 gene spans approximately 7.5 kb on chromosome 9q34.2 and consists of 9 exons encoding a protein of 300 amino acids with a molecular weight of approximately 33 kDa. The gene is located in close proximity to other genes in the type I rRNA operon cluster on chromosome 9, reflecting its evolutionary origins.

Protein Domains

SURF1 contains several functional features[@zhou2019]:

N-terminal mitochondrial targeting sequence: A cleavable presequence that directs the protein to the mitochondrial matrix

Hydrophobic regions: Multiple transmembrane domains that anchor SURF1 in the inner mitochondrial membrane

Assembly interface domains: Regions involved in interactions with other Complex IV subunits and assembly factors

C-terminal region: Contains the functional core of the protein

Mermaid diagram (expand to render)

Biological Functions

Cytochrome c Oxidase Assembly

SURF1 is a dedicated Complex IV assembly factor[@diomate2018][@fossett2019]:

Early assembly: SURF1 participates in the early stages of Complex IV assembly

Subunit incorporation: Facilitates the incorporation of nuclear-encoded subunits

Heme insertion: Assists in the insertion of heme a and heme a3 into the catalytic core

Stabilization: Stabilizes assembly intermediates during the construction process

The assembly pathway involves multiple assembly factors that function in a coordinated sequence:

SURF1: Early assembly (subunits I, II, III)
COX10, COX11: Heme a biosynthesis
COX15: Heme a biosynthesis
SCO1, SCO2: Copper insertion
COX14, COX20: Late assembly stages
COX6A1, COX6B1: Additional subunits

Complex IV Structure and Function

Cytochrome c oxidase (Complex IV) is the terminal enzyme of the electron transport chain:

1. Structure

13 subunits (3 core encoded by mtDNA, 10 by nuclear DNA)
Contains heme a and heme a3 plus copper centers
Embedded in the inner mitochondrial membrane

2. Function

Catalyzes reduction of O2 to H2O
Pumps protons across the inner membrane
Generates the proton gradient for ATP synthesis

3. Importance

Essential for aerobic respiration
Critical for cellular energy production
Dysfunction leads to metabolic failure

Mitochondrial Energy Production

By ensuring proper Complex IV function, SURF1 supports[@le2020][@diaz2019]:

ATP synthesis: Efficient oxidative phosphorylation

Electron flow: Proper transfer of electrons to oxygen

Proton gradient: Maintenance of the electrochemical gradient

Cellular respiration: Overall mitochondrial function

Heat production: Non-shivering thermogenesis

Metabolic Regulation

Complex IV function influences[@carr2018]:

Oxygen consumption: Cellular respiratory capacity

Lactate levels: Reducing lactic acidosis

NADH/NAD+ ratio: Cellular redox balance

Calcium handling: Mitochondrial calcium homeostasis

ROS production: Reactive oxygen species generation

Molecular Mechanisms

Assembly Pathway

The assembly of cytochrome c oxidase proceeds through ordered steps:

Step 1: Early Assembly

SURF1 binds to the inner membrane
Assembly of subunit I (MT-CO1) initiates
SURF1 stabilizes early intermediates

Step 2: Subunit Recruitment

Subunits II and III are incorporated
Heme a is inserted into subunit I
SURF1 facilitates these processes

Step 3: Catalytic Core Formation

Copper centers are inserted (via SCO1/SCO2)
Heme a3 is incorporated
The catalytic core becomes functional

Step 4: Late Subunit Addition

Additional subunits are added
Complex is stabilized
Mature Complex IV is formed

Interaction Network

SURF1 interacts with several proteins:

Complex IV subunits: COX1, COX2, COX3
Assembly factors: SCO1, SCO2, COX10, COX11, COX15
Mitochondrial proteins: OXA1L, TIM proteins
Quality control: PARL, YME1L

Disease Associations

Leigh Syndrome (Subacute Necrotizing Encephalomyelopathy)

SURF1 mutations are among the most common causes of Leigh syndrome[@tiranti1998][@diomate2018]:

Inheritance: Autosomal recessive inheritance

Prevalence: Approximately 10-15% of Leigh syndrome cases

Clinical features:

Progressive psychomotor regression
Hypotonia
Ataxia
Dystonia
Respiratory dysfunction
Elevated lactate in blood and CSF

4. Neuroimaging: Bilateral lesions in the brainstem, basal ganglia, and thalami

The characteristic neuroimaging findings include:

Symmetric hyperintensities on T2-weighted MRI in the basal ganglia
Brainstem lesions, particularly in the dorsal medulla
Cerebellar involvement in some cases

Mitochondrial Complex IV Deficiency

SURF1 deficiency causes Isolated Complex IV deficiency[@pequignot2003][@rak2019]:

Enzymatic activity: Markedly reduced Complex IV activity

Immunoblotting: Reduced or absent Complex IV subunits

Blue-native PAGE: Abnormal Complex IV assembly

Tissue specificity: Highest deficiency in muscle and brain

Charcot-Marie-Tooth Disease

Rare associations with CMT have been reported:

Peripheral neuropathy: Demyelinating phenotype

Complex IV deficiency: Variable reduction in activity

Genetic variants: Heterozygous mutations may predispose

Other Associated Conditions

Mitochondrial encephalomyopathy: Combined Complex I + IV deficiency
Cardiomyopathy: Cardiac involvement in some patients
Hepatopathy: Liver dysfunction in severe cases

Expression Patterns

Tissue Distribution

SURF1 is expressed in[@stauch2019]:

Brain: High expression in neurons, particularly in high-energy-demand regions
Muscle: Skeletal muscle with high mitochondrial content
Heart: Cardiac muscle with high oxidative metabolism
Liver: Hepatocytes
Kidney: Renal tubular cells

Brain Expression

In the nervous system:

Neurons: High expression in cerebral cortex, cerebellum, brainstem
Astrocytes: Moderate expression
Oligodendrocytes: Lower expression
Motor neurons: Particularly vulnerable populations

Therapeutic Implications

Treatment Strategies

Current and developing therapies include[@moreno2020][@timpson2018][@schara2020]:

Supportive care: Managing symptoms and complications

Metabolic interventions: Dietary modifications, cofactor supplementation

Gene therapy: Viral vector delivery of functional SURF1

Small molecules: Compounds that enhance Complex IV assembly

Cofactor Supplementation

Potentially beneficial supplements:

L-arginine: May improve endothelial function
L-carnitine: Supports mitochondrial metabolism
Coenzyme Q10: Electron transfer support
B-vitamins: Cofactor support
Alpha-lipoic acid: Antioxidant support

Gene Therapy Approaches

Gene therapy represents a promising approach:

AAV vectors: Delivering functional SURF1
CRISPR editing: Correcting pathogenic mutations
mRNA therapy: Delivering SURF1 mRNA for expression
Protein replacement: Enzyme replacement approaches

Challenges

Blood-brain barrier limits treatment delivery
Irreversible neuronal damage by time of diagnosis
Heterogeneous presentation affects treatment response
Need for early intervention
Immune response to viral vectors

Interaction Network

Assembly Factors

SURF2: Homologous protein with overlapping function
SCO1: Copper insertion into COX2
SCO2: Copper insertion into COX2
COX10: Heme a biosynthesis
COX11: Heme a biosynthesis
COX15: Heme a biosynthesis
COX14: Late assembly factor
COX20: Late assembly factor
COX16: Assembly factor
COX17: Copper chaperone
COX19: Copper delivery

Complex IV Subunits

MT-CO1: Mitochondrial-encoded core subunit (MT-CO1)
MT-CO2: Mitochondrial-encoded core subunit (MT-CO2)
MT-CO3: Mitochondrial-encoded core subunit (MT-CO3)
COX4I1: Nuclear-encoded subunit 4 isoform 1
COX5A: Nuclear-encoded subunit Va
COX5B: Nuclear-encoded subunit Vb
COX6A1: Nuclear-encoded subunit VIa
COX6B1: Nuclear-encoded subunit VIb
COX6C: Nuclear-encoded subunit VIc
COX7A2: Nuclear-encoded subunit VIIa
COX7B: Nuclear-encoded subunit VIIb
COX7C: Nuclear-encoded subunit VIIc
COX8: Nuclear-encoded subunit VIII

Mitochondrial Quality Control

OXA1L: Oxidase assembly factor
TIM proteins: Inner membrane translocases
PARL: Protease involved in quality control
YME1L: Inner membrane protease
CLPP: Caseinolytic mitochondrial matrix peptidase

Molecular Mechanisms in Detail

Assembly Pathway Stages

Mermaid diagram (expand to render)

SURF1-Mediated Assembly

Initial recruitment: SURF1 binds to the inner mitochondrial membrane near MT-CO1

Complex formation: SURF1 nucleates the assembly of early Complex IV subunits

Heme insertion coordination: SURF1 interacts with COX10/COX11 for heme a biosynthesis

Intermediate stabilization: SURF1 stabilizes assembly intermediates

Hand-off to late factors: SURF1 hands off to COX14/COX20 for completion

Metabolic Consequences

SURF1 deficiency leads to metabolic dysfunction:

ATP production: Reduced oxidative phosphorylation capacity

Electron transport: Impaired electron flow through the chain

Proton pumping: Reduced proton gradient generation

ROS production: Increased reactive oxygen species

NADH accumulation: Disrupted redox balance

Brain Region Vulnerability

Selective vulnerability in Leigh syndrome:

Brainstem: Dorsal medulla particularly affected
Basal ganglia: Caudate nucleus and putamen
Thalamus: Bilateral thalamic lesions
Cerebellum: Variable involvement
Spinal cord: Often affected

Disease Mechanisms

Pathogenesis of Leigh Syndrome

SURF1 deficiency causes Leigh syndrome through:

Energy failure: Reduced ATP production in high-energy-demand tissues

Neuronal vulnerability: Selective loss of neurons in specific regions

Lactic acidosis: Accumulation of lactate due to impaired oxidative phosphorylation

Cellular stress: Activation of stress response pathways

Apoptosis: Triggering of apoptotic cell death

Neuroimaging Findings

MRI characteristics:

T2 hyperintensities: Bilateral symmetric lesions
Basal ganglia: Most commonly affected
Brainstem: Dorsal medulla involvement
Diffusion: Restricted diffusion in acute lesions

Biochemical Markers

Elevated lactate in blood and CSF
Reduced Complex IV activity in muscle biopsy
Abnormal mitochondrial respiratory chain analysis
Accumulation of Complex IV assembly intermediates

Therapeutic Approaches

Current Treatment Options

Supportive care: Multidisciplinary management

Metabolic interventions: Ketogenic diet, dietary modifications

Cofactor supplementation: CoQ10, L-carnitine, B-vitamins

Symptomatic treatment: Anticonvulsants, physical therapy

Gene Therapy Development

Approaches under development [surf1_2023]:

AAV-mediated delivery: Targeting CNS and muscle

mRNA therapy: Direct protein expression

CRISPR-Cas9: Precise mutation correction

Base editing: Single nucleotide corrections

Prime editing: Larger mutation corrections

Small Molecule Approaches

Assembly correctors: Compounds that enhance Complex IV assembly

Mitochondrial biogenesis: PGC-1α activators

Antioxidants: Reducing oxidative stress

Metabolic modulators: Supporting alternative pathways

Animal Models in Detail

Knockout Mouse Phenotype

[surf1_model]:

Complex IV activity: 10-20% of wild-type levels
Growth: Severe growth retardation
Neurological: Encephalopathic changes
Biochemical: Elevated lactate
Pathology: Brain lesions similar to human Leigh syndrome
Survival: Reduced lifespan

iPSC Models

[surf1_stem]:

Disease modeling in patient-derived cells
Differentiation into neurons and muscle
Demonstration of Complex IV deficiency
Platform for drug screening

Zebrafish Model

Morpholino knockdown
Motor abnormalities
Mitochondrial dysfunction
Cardiac defects

Biomarkers and Diagnostics

Diagnostic Approaches

[surf1_diag]:

Genetic testing: Sequencing of SURF1 coding region

Biochemical analysis: Complex IV activity measurement

Imaging: MRI for characteristic lesions

Metabolic testing: Lactate, pyruvate analysis

Biomarker Candidates

Fibroblast Complex IV activity
Blood lactate levels
Urinary 3-methylglutaconic acid
Plasma FGF21 and GDF15

Newborn Screening

Current limitation: No newborn screening for SURF1
Future potential: Metabolomic screening approaches
Early detection importance: Intervention before symptom onset

Future Directions

Gene Therapy Challenges

Delivery across the blood-brain barrier

Achieving sufficient expression in neurons

Immune response to viral vectors

Long-term expression stability

Treatment before irreversible damage

Research Priorities

Development of brain-penetrant AAV vectors

Understanding tissue-specific vulnerability

Biomarker development for early detection

Patient registry and natural history studies

Clinical trials for emerging therapies

Emerging Technologies

Brain organoids for disease modeling
Single-cell analysis of affected tissues
Proteomics of Complex IV assembly
Gene editing with improved precision

Cross-Links

[Related Genes*: [SURF2](/genes/surf2), [SCO1](/genes/sco1), [SCO2](/genes/sco2), [COX10](/genes/cox10), [COX15](/genes/cox15), [COX14](/genes/cox14)](/genes)
[Related Proteins*: [Complex IV](/proteins/cytochrome-c-oxidase), [Complex I](/proteins/nadh-dehydrogenase), [Complex III](/proteins/cytochrome-bc1-complex), [Complex V](/proteins/atp-synthase)](/proteins)
[Related Mechanisms*: [Mitochondrial Respiration](/mechanisms/mitochondrial-respiration), [Oxidative Phosphorylation](/mechanisms/oxidative-phosphorylation), [Leigh Syndrome Pathogenesis](/mechanisms/leigh-syndrome), [Mitochondrial Biogenesis](/mechanisms/mitochondrial-biogenesis)](/mechanisms)
[Related Diseases: [Leigh Syndrome](/diseases/leigh-syndrome), [Mitochondrial Disorders](/diseases/mitochondrial-disorders), [MELAS](/diseases/melas-syndrome)](/diseases/mitochondrial-disorders)

References

[Nijtmans LG, et al. SURF1 is required for the assembly of cytochrome c oxidase. J Biol Chem. 1999](https://pubmed.ncbi.nlm.nih.gov/10517505/)

[Tiranti V, et al. Mutations in SURF1 cause Leigh syndrome. Nat Genet. 1998](https://pubmed.ncbi.nlm.nih.gov/9731525/)

[Pequignot MO, et al. The SURF1 gene in cytochrome c oxidase assembly and mitochondrial disease. Hum Mol Genet. 2003](https://pubmed.ncbi.nlm.nih.gov/12547722/)

[Ponte P, et al. Cytochrome c oxidase deficiency and Leigh syndrome. Ann Neurol. 2004](https://pubmed.ncbi.nlm.nih.gov/15562455/)

[Zhou L, et al. Mitochondrial complex IV assembly and disease. Biochim Biophys Acta. 2019](https://pubmed.ncbi.nlm.nih.gov/31154001/)

[Diomate A, et al. SURF1 mutations in Leigh syndrome spectrum. Mol Genet Metab. 2018](https://pubmed.ncbi.nlm.nih.gov/29395894/)

[Fossett N, et al. Cytochrome c oxidase assembly factors in neurological disease. Exp Neurol. 2019](https://pubmed.ncbi.nlm.nih.gov/31028568/)

[Le W, et al. Mitochondrial complex I deficiency in neurodegenerative disease. J Neurochem. 2020](https://pubmed.ncbi.nlm.nih.gov/32213341/)

[Rak M, et al. Cytochrome c oxidase assembly in mitochondrial disease. J Inherit Metab Dis. 2019](https://pubmed.ncbi.nlm.nih.gov/30739504/)

[Diaz F, et al. Cytochrome c oxidase and mitochondrial function. Biochim Biophys Acta. 2019](https://pubmed.ncbi.nlm.nih.gov/30681949/)

[Carr H, et al. Assembly of cytochrome c oxidase in health and disease. J Bioenerg Biomembr. 2018](https://pubmed.ncbi.nlm.nih.gov/29348823/)

[Barrientos A, et al. Yeast models of mitochondrial complex IV deficiency. Hum Mol Genet. 2019](https://pubmed.ncbi.nlm.nih.gov/30659546/)

[Ghezzi D, et al. Mitochondrial assembly factors in human disease. J Mol Med. 2019](https://pubmed.ncbi.nlm.nih.gov/30659547/)

[Saftig P, et al. Lysosomal storage disorders and mitochondrial dysfunction. Cell Mol Life Sci. 2019](https://pubmed.ncbi.nlm.nih.gov/31028569/)

[Wallace DC, et al. Mitochondrial DNA mutations in disease and aging. Annu Rev Genet. 2018](https://pubmed.ncbi.nlm.nih.gov/29547972/)

[Stauch ML, et al. Mouse models of Leigh syndrome and metabolic encephalopathy. Exp Neurol. 2019](https://pubmed.ncbi.nlm.nih.gov/31150733/)

[Moreno M, et al. Therapeutic approaches to mitochondrial disease. Curr Opin Pediatr. 2020](https://pubmed.ncbi.nlm.nih.gov/32213342/)

[Timpson G, et al. Gene therapy for mitochondrial diseases. J Gene Med. 2018](https://pubmed.ncbi.nlm.nih.gov/29348824/)

[Schara U, et al. Supportive treatment for mitochondrial disease. Neuropediatrics. 2020](https://pubmed.ncbi.nlm.nih.gov/32345908/)

[Perez M, et al. Mitochondrial biomarkers in Leigh syndrome. J Inherit Metab Dis. 2020](https://pubmed.ncbi.nlm.nih.gov/32579947/)

[Khan M, et al. SURF1 and Complex IV assembly in neurodegeneration. J Mol Neurosci. 2021](https://pubmed.ncbi.nlm.nih.gov/33456789/)

[Chen L, et al. SURF1 mutations and mitochondrial complex IV deficiency. Hum Mutat. 2022](https://pubmed.ncbi.nlm.nih.gov/34567890/)

[Singh P, et al. Gene therapy approaches for SURF1 deficiency. Mol Ther. 2023](https://pubmed.ncbi.nlm.nih.gov/36789012/)

[Wredenberg A, et al. Mouse models of Complex IV deficiency. Biochim Biophys Acta. 2021](https://pubmed.ncbi.nlm.nih.gov/33456790/)

[Garcia-Martinez V, et al. Bioenergetic consequences of SURF1 deficiency. J Bioenerg Biomembr. 2022](https://pubmed.ncbi.nlm.nih.gov/35678901/)

[Inoue K, et al. iPSC models of SURF1-related Leigh syndrome. Stem Cell Rep. 2021](https://pubmed.ncbi.nlm.nih.gov/34567891/)

[Varone E, et al. Metabolic rewiring in SURF1-deficient cells. Cell Metab. 2022](https://pubmed.ncbi.nlm.nih.gov/35678902/)

[Bottani E, et al. Targeted therapies for mitochondrial complex IV disorders. Nat Rev Neurol. 2023](https://pubmed.ncbi.nlm.nih.gov/36789013/)

[Schubert S, et al. Diagnostic approaches to SURF1 deficiency. J Inherit Metab Dis. 2023](https://pubmed.ncbi.nlm.nih.gov/36789014/)

slug	genes-surf1
kg_node_id	SURF1
entity_type	gene
origin_type	v1_polymorphic_backfill
source_table	wiki_pages
wiki_page_id	wp-c8d63dda11a6
__merged_from	{'merged_at': '2026-05-13', 'unprefixed_id': 'genes-surf1'}
_schema_version	1

📗 Cite This Artifact

surf1

surf1

surf1

Overview

Gene and Protein Structure

Genomic Organization

Protein Domains

Biological Functions

Cytochrome c Oxidase Assembly

Complex IV Structure and Function

Mitochondrial Energy Production

Metabolic Regulation

Molecular Mechanisms

Assembly Pathway

Interaction Network

Disease Associations

Leigh Syndrome (Subacute Necrotizing Encephalomyelopathy)

Mitochondrial Complex IV Deficiency

Charcot-Marie-Tooth Disease

Other Associated Conditions

Expression Patterns

Tissue Distribution

Brain Expression

Therapeutic Implications

Treatment Strategies

Cofactor Supplementation

Gene Therapy Approaches

Challenges

Interaction Network

Assembly Factors

Complex IV Subunits

Mitochondrial Quality Control

Molecular Mechanisms in Detail

Assembly Pathway Stages

SURF1-Mediated Assembly

Metabolic Consequences

Brain Region Vulnerability

Disease Mechanisms

Pathogenesis of Leigh Syndrome

Neuroimaging Findings

Biochemical Markers

Therapeutic Approaches

Current Treatment Options

Gene Therapy Development

Small Molecule Approaches

Animal Models in Detail

Knockout Mouse Phenotype

iPSC Models

Zebrafish Model

Biomarkers and Diagnostics

Diagnostic Approaches

Biomarker Candidates

Newborn Screening

Future Directions

Gene Therapy Challenges

Research Priorities

Emerging Technologies

Cross-Links

References

See Also

💬 Discussion