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Aliases for COX20 Gene

Aliases for COX20 Gene

  • COX20, Cytochrome C Oxidase Assembly Factor 2 3 5
  • Family With Sequence Similarity 36, Member A 2 3
  • FAM36A 3 4
  • COX20 Cox2 Chaperone Homolog (S. Cerevisiae) 2
  • Cytochrome C Oxidase Protein 20 Homolog 3
  • COX20 Cox2 Chaperone Homolog 3

External Ids for COX20 Gene

Previous HGNC Symbols for COX20 Gene

  • FAM36A

Previous GeneCards Identifiers for COX20 Gene

  • GC01P245000

Summaries for COX20 Gene

Entrez Gene Summary for COX20 Gene

  • This gene encodes a protein that plays a role in the assembly of cytochrome C oxidase, an important component of the respiratory pathway. It contains two transmembrane helices and localizes to the mitochondrial membrane. Mutations in this gene can cause mitochondrial complex IV deficiency, which results in ataxia and muscle hypotonia. There are multiple pseudogenes for this gene. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2015]

GeneCards Summary for COX20 Gene

COX20 (COX20, Cytochrome C Oxidase Assembly Factor) is a Protein Coding gene. Diseases associated with COX20 include Mitochondrial Complex Iv Deficiency and Hypotonia. Among its related pathways are Respiratory electron transport, ATP synthesis by chemiosmotic coupling, and heat production by uncoupling proteins. and Gene Expression.

Additional gene information for COX20 Gene

No data available for CIViC summary , UniProtKB/Swiss-Prot , Tocris Summary , Gene Wiki entry , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for COX20 Gene

Genomics for COX20 Gene

GeneHancer (GH) Regulatory Elements for COX20 Gene

Promoters and enhancers for COX20 Gene
GeneHancer (GH) Identifier GH Type GH
GH Sources Gene Association Score Total Score TSS distance (kb) Number of Genes Away Size (kb) Transcription Factor
Binding Sites
Gene Targets
GH01I244832 Promoter/Enhancer 2.3 EPDnew Ensembl ENCODE dbSUPER 584 +0.3 276 6.4 CLOCK MLX FEZF1 DMAP1 YY1 ZNF213 E2F8 ZNF143 ZNF548 SP3 COX20 DESI2 HNRNPU ADSS LOC101928068 AKT3
GH01I244860 Promoter/Enhancer 2.5 EPDnew Ensembl ENCODE dbSUPER 34.8 +28.2 28248 6.7 CLOCK MLX ZFP64 FEZF1 DMAP1 IRF4 YY1 SLC30A9 ZNF213 ZNF548 HNRNPU ENSG00000273175 DESI2 COX20 LOC101928068 ADSS CATSPERE
GH01I244967 Promoter/Enhancer 2.3 EPDnew Ensembl ENCODE dbSUPER 33.5 +134.9 134944 4.6 ZFP64 FEZF1 DMAP1 YY1 SLC30A9 ZNF213 E2F8 ZNF416 ZNF143 ZNF548 LOC101928068 EFCAB2 HNRNPU COX20 ADSS DESI2
GH01I244046 Promoter/Enhancer 3 UCNEbase EPDnew FANTOM5 Ensembl ENCODE dbSUPER 15.2 -785.6 -785627 7.4 HDGF PKNOX1 ARNT SIN3A FEZF1 DMAP1 ZNF2 YY1 POLR2B ZNF213 ZBTB18 DESI2 ENSG00000253326 COX20 AKT3 HNRNPU LINC01347 LOC101928068 ENSG00000236031 ADSS
GH01I244449 Promoter/Enhancer 2.3 EPDnew Ensembl ENCODE dbSUPER 11.9 -384.0 -383986 3.6 HDGF PKNOX1 FOXA2 ARNT ARID4B SIN3A DMAP1 ZNF2 YY1 POLR2B CATSPERE ADSS ENSG00000236031 HNRNPU DESI2 LOC101928068 COX20 LOC105373264
- Elite GeneHancer and/or Elite GeneHancer-gene association Download GeneHancer data dump

GeneHancers around COX20 on UCSC Golden Path with GeneCards custom track

Genomic Locations for COX20 Gene

Genomic Locations for COX20 Gene
9,736 bases
Plus strand

Genomic View for COX20 Gene

Genes around COX20 on UCSC Golden Path with GeneCards custom track

Cytogenetic band:
COX20 Gene in genomic location: bands according to Ensembl, locations according to GeneLoc (and/or Entrez Gene and/or Ensembl if different)
Genomic Location for COX20 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for COX20 Gene

Proteins for COX20 Gene

  • Protein details for COX20 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Cytochrome c oxidase protein 20 homolog
    Protein Accession:
    Secondary Accessions:
    • Q8WV86

    Protein attributes for COX20 Gene

    118 amino acids
    Molecular mass:
    13291 Da
    Quaternary structure:
    No Data Available

    Alternative splice isoforms for COX20 Gene


neXtProt entry for COX20 Gene

Post-translational modifications for COX20 Gene

Other Protein References for COX20 Gene

No data available for DME Specific Peptides for COX20 Gene

Domains & Families for COX20 Gene

Gene Families for COX20 Gene

Protein Domains for COX20 Gene


Suggested Antigen Peptide Sequences for COX20 Gene

Graphical View of Domain Structure for InterPro Entry



  • Belongs to the COX20 family.
  • Belongs to the COX20 family.
genes like me logo Genes that share domains with COX20: view

Function for COX20 Gene

Phenotypes From GWAS Catalog for COX20 Gene

Gene Ontology (GO) - Molecular Function for COX20 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005515 protein binding IPI 23125284
genes like me logo Genes that share ontologies with COX20: view

Phenotypes for COX20 Gene

genes like me logo Genes that share phenotypes with COX20: view

Human Phenotype Ontology for COX20 Gene

HPO Id HPO Name Alternative Ids Definition Synonyms

Animal Model Products

Inhibitory RNA Products

No data available for Molecular function , Enzyme Numbers (IUBMB) , Animal Models , Transcription Factor Targets and HOMER Transcription for COX20 Gene

Localization for COX20 Gene

Subcellular locations from UniProtKB/Swiss-Prot for COX20 Gene

Mitochondrion membrane; Multi-pass membrane protein.

Subcellular locations from

Extracellular space Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi Apparatus Nucleus Mitochondrion 0 1 2 3 4 5 Confidence
COMPARTMENTS Subcellular localization image for COX20 gene
Compartment Confidence
mitochondrion 5
cytosol 2
extracellular 1
lysosome 1

Subcellular locations from the

Human Protein Atlas (HPA)

Gene Ontology (GO) - Cellular Components for COX20 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005739 mitochondrion IDA --
GO:0005743 mitochondrial inner membrane IDA 23125284
GO:0016020 membrane IEA --
GO:0016021 integral component of membrane IEA --
GO:0031966 mitochondrial membrane IEA --
genes like me logo Genes that share ontologies with COX20: view

Pathways & Interactions for COX20 Gene

genes like me logo Genes that share pathways with COX20: view

Gene Ontology (GO) - Biological Process for COX20 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0009060 aerobic respiration IBA --
GO:0033617 mitochondrial respiratory chain complex IV assembly IMP,IBA 23125284
genes like me logo Genes that share ontologies with COX20: view

No data available for SIGNOR curated interactions for COX20 Gene

Drugs & Compounds for COX20 Gene

No Compound Related Data Available

Transcripts for COX20 Gene

Unigene Clusters for COX20 Gene

COX20 Cox2 chaperone homolog (S. cerevisiae):
Representative Sequences:

Inhibitory RNA Products

Alternative Splicing Database (ASD) splice patterns (SP) for COX20 Gene

No ASD Table

Relevant External Links for COX20 Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for COX20 Gene

mRNA expression in normal human tissues from GTEx, Illumina, BioGPS, and CGAP SAGE for COX20 Gene

mRNA expression in embryonic tissues and stem cells from LifeMap Discovery

Protein differential expression in normal tissues from HIPED for COX20 Gene

This gene is overexpressed in Bone (8.6).

Integrated Proteomics: protein expression in normal tissues and cell lines from ProteomicsDB, PaxDb, MaxQB, and MOPED for COX20 Gene

Protein tissue co-expression partners for COX20 Gene

- Elite partner

NURSA nuclear receptor signaling pathways regulating expression of COX20 Gene:


SOURCE GeneReport for Unigene cluster for COX20 Gene:


Evidence on tissue expression from TISSUES for COX20 Gene

  • Nervous system(4.4)

Phenotype-based relationships between genes and organs from Gene ORGANizer for COX20 Gene

Germ Layers:
  • ectoderm
  • endoderm
  • mesoderm
  • cardiovascular
  • digestive
  • immune
  • integumentary
  • nervous
  • respiratory
  • skeletal muscle
  • urinary
Head and neck:
  • brain
  • cerebrospinal fluid
  • cranial nerve
  • ear
  • eye
  • eyelid
  • face
  • head
  • meninges
  • neck
  • bronchus
  • heart
  • heart valve
  • lung
  • trachea
  • kidney
  • liver
  • blood
  • blood vessel
  • coagulation system
  • peripheral nervous system
  • red blood cell
  • skin
genes like me logo Genes that share expression patterns with COX20: view

Primer Products

No data available for mRNA differential expression in normal tissues and mRNA Expression by UniProt/SwissProt for COX20 Gene

Orthologs for COX20 Gene

This gene was present in the common ancestor of animals.

Orthologs for COX20 Gene

Organism Taxonomy Gene Similarity Type Details
(Pan troglodytes)
Mammalia COX20 33 34
  • 99.37 (n)
(Bos Taurus)
Mammalia COX20 33
  • 88.18 (n)
FAM36A 34
  • 79 (a)
(Canis familiaris)
Mammalia COX20 33
  • 87.79 (n)
(Rattus norvegicus)
Mammalia Cox20 33
  • 83.33 (n)
(Mus musculus)
Mammalia Cox20 33 16 34
  • 83.02 (n)
(Ornithorhynchus anatinus)
Mammalia COX20 34
  • 75 (a)
(Monodelphis domestica)
Mammalia COX20 34
  • 69 (a)
(Gallus gallus)
Aves COX20 33 34
  • 69.61 (n)
(Anolis carolinensis)
Reptilia COX20 34
  • 58 (a)
tropical clawed frog
(Silurana tropicalis)
Amphibia LOC100497666 33
  • 63.78 (n)
(Danio rerio)
Actinopterygii zgc:92598 33
  • 57 (n)
COX20 34
  • 56 (a)
fruit fly
(Drosophila melanogaster)
Insecta l(3)87Df 34
  • 37 (a)
Species where no ortholog for COX20 was found in the sources mined by GeneCards:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African clawed frog (Xenopus laevis)
  • African malaria mosquito (Anopheles gambiae)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • baker's yeast (Saccharomyces cerevisiae)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • rainbow trout (Oncorhynchus mykiss)
  • rice (Oryza sativa)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea squirt (Ciona intestinalis)
  • sea squirt (Ciona savignyi)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • thale cress (Arabidopsis thaliana)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)

Evolution for COX20 Gene

Gene Tree for COX20 (if available)
Gene Tree for COX20 (if available)

Paralogs for COX20 Gene

(1) SIMAP similar genes for COX20 Gene using alignment to 1 proteins: Pseudogenes for COX20 Gene

genes like me logo Genes that share paralogs with COX20: view

No data available for Paralogs for COX20 Gene

Variants for COX20 Gene

Sequence variations from dbSNP and Humsavar for COX20 Gene

SNP ID Clin Chr 01 pos Variation AA Info Type
rs587777004 pathogenic, Cytochrome-c oxidase deficiency 244,842,055(+) A/C/G coding_sequence_variant, intron_variant, missense_variant, non_coding_transcript_variant
rs147700538 likely-pathogenic, not provided 244,842,234(+) T/G 3_prime_UTR_variant, coding_sequence_variant, missense_variant, non_coding_transcript_variant
rs373824502 likely-pathogenic, not provided 244,841,992(+) C/A/T coding_sequence_variant, intron_variant, missense_variant, non_coding_transcript_variant, synonymous_variant
rs749171144 likely-pathogenic, not provided 244,842,059(+) G/A intron_variant, splice_donor_variant
rs764620077 conflicting-interpretations-of-pathogenicity, not provided 244,841,993(+) G/A coding_sequence_variant, intron_variant, missense_variant, non_coding_transcript_variant

Structural Variations from Database of Genomic Variants (DGV) for COX20 Gene

Variant ID Type Subtype PubMed ID
nsv549493 CNV gain 21841781
esv2726684 CNV deletion 23290073
esv2669232 CNV deletion 23128226

Variation tolerance for COX20 Gene

Residual Variation Intolerance Score: 63% of all genes are more intolerant (likely to be disease-causing)
Gene Damage Index Score: 0.76; 16.04% of all genes are more intolerant (likely to be disease-causing)

Additional Variant Information for COX20 Gene

Human Gene Mutation Database (HGMD)
SNPedia medical, phenotypic, and genealogical associations of SNPs for

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for COX20 Gene

Disorders for COX20 Gene

MalaCards: The human disease database

(2) MalaCards diseases for COX20 Gene - From: HGMD, OMIM, ClinVar, GTR, Orphanet, and GeneCards

Disorder Aliases PubMed IDs
mitochondrial complex iv deficiency
  • cytochrome c oxidase deficiency
- elite association - COSMIC cancer census association via MalaCards
Search COX20 in MalaCards View complete list of genes associated with diseases

Additional Disease Information for COX20

genes like me logo Genes that share disorders with COX20: view

No data available for UniProtKB/Swiss-Prot and Genatlas for COX20 Gene

Publications for COX20 Gene

  1. Iterative orthology prediction uncovers new mitochondrial proteins and identifies C12orf62 as the human ortholog of COX14, a protein involved in the assembly of cytochrome c oxidase. (PMID: 22356826) Szklarczyk R … Huynen MA (Genome biology 2012) 2 3 4 58
  2. A mutation in the FAM36A gene, the human ortholog of COX20, impairs cytochrome c oxidase assembly and is associated with ataxia and muscle hypotonia. (PMID: 23125284) Szklarczyk R … van den Heuvel LP (Human molecular genetics 2013) 2 3 58
  3. The DNA sequence and biological annotation of human chromosome 1. (PMID: 16710414) Gregory SG … Prigmore E (Nature 2006) 3 4 58
  4. The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). (PMID: 15489334) Gerhard DS … MGC Project Team (Genome research 2004) 3 4 58
  5. The mitochondrial TMEM177 associates with COX20 during COX2 biogenesis. (PMID: 29154948) Lorenzi I … Rehling P (Biochimica et biophysica acta 2018) 3 58

Products for COX20 Gene

Sources for COX20 Gene

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