COX5A cytochrome c oxidase subunit 5A [Homo sapiens (human)] - Gene

Summary

Official Symbol: COX5Aprovided by HGNC
Official Full Name: cytochrome c oxidase subunit 5Aprovided by HGNC
Primary source: HGNC:HGNC:2267
See related: Ensembl:ENSG00000178741 MIM:603773; AllianceGenome:HGNC:2267
Gene type: protein coding
RefSeq status: REVIEWED
Organism: Homo sapiens
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as: VA; COX; COX-VA; MC4DN20
Summary: Cytochrome c oxidase (COX) is the terminal enzyme of the mitochondrial respiratory chain. It is a multi-subunit enzyme complex that couples the transfer of electrons from cytochrome c to molecular oxygen and contributes to a proton electrochemical gradient across the inner mitochondrial membrane. The complex consists of 13 mitochondrial- and nuclear-encoded subunits. The mitochondrially-encoded subunits perform the electron transfer of proton pumping activities. The functions of the nuclear-encoded subunits are unknown but they may play a role in the regulation and assembly of the complex. This gene encodes the nuclear-encoded subunit Va of the human mitochondrial respiratory chain enzyme. A pseudogene COX5AP1 has been found in chromosome 14q22. [provided by RefSeq, Jul 2008]
Expression: Broad expression in heart (RPKM 144.5), colon (RPKM 144.4) and 25 other tissues See more
Orthologs: mouse all
NEW: Try the new Gene table
Try the new Transcript table

Genomic context

Location:: 15q24.2

Exon count:: 5

Annotation release	Status	Assembly	Chr	Location
RS_2024_08	current	GRCh38.p14 (GCF_000001405.40)	15	NC_000015.10 (74919791..74938073, complement)
RS_2024_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	15	NC_060939.1 (72789676..72807970, complement)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	15	NC_000015.9 (75212132..75230414, complement)

Chromosome 15 - NC_000015.10 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

Go to the top of the page Help

Go to reference sequence details

Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Bibliography

Go to the top of the page Help

GeneRIFs: Gene References Into Functions

What's a GeneRIF?

COX5A as a potential biomarker for disease activity and organ damage in lupus.
Title: COX5A as a potential biomarker for disease activity and organ damage in lupus.
COX5A Alleviates Doxorubicin-Induced Cardiotoxicity by Suppressing Oxidative Stress, Mitochondrial Dysfunction and Cardiomyocyte Apoptosis.
Title: COX5A Alleviates Doxorubicin-Induced Cardiotoxicity by Suppressing Oxidative Stress, Mitochondrial Dysfunction and Cardiomyocyte Apoptosis.
miR-204/COX5A axis contributes to invasion and chemotherapy resistance in estrogen receptor-positive breast cancers.
Title: miR-204/COX5A axis contributes to invasion and chemotherapy resistance in estrogen receptor-positive breast cancers.
The monomeric COX1 assembly intermediate accumulates demonstrating a function of COX5A in complex IV biogenesis. A potential therapeutic lead is demonstrated by showing that copper supplementation leads to partial rescue of complex IV deficiency in patient fibroblasts.
Title: Mutation in mitochondrial complex IV subunit COX5A causes pulmonary arterial hypertension, lactic acidemia, and failure to thrive.
Our current study showed that COX Va may play a role in migration and invasion of NSCLC cells and can be used as a biomarker to predict aggressiveness of NSCLC.
Title: The role of cytochrome c oxidase subunit Va in non-small cell lung carcinoma cells: association with migration, invasion and prediction of distant metastasis.
Observational study of gene-disease association. (HuGE Navigator)
Title: Genetic variants in nuclear-encoded mitochondrial genes influence AIDS progression.
Novel insights into the assembly and function of human nuclear-encoded cytochrome c oxidase subunits 5a
Title: Novel insights into the assembly and function of human nuclear-encoded cytochrome c oxidase subunits 4, 5a, 6a, 7a and 7b.
Data show that Bcl-2 expression positively influences the targeting of nuclear-encoded COX Va and Vb to the mitochondria of cancer cells.
Title: Involvement of cytochrome c oxidase subunits Va and Vb in the regulation of cancer cell metabolism by Bcl-2.
study points to a role for surfeit 1(SURF1) in promoting the association of cytochrome c oxidase II with the cytochrome c oxidase I.cytochrome c oxidase subunit 4.cytochrome c oxidase subunit 5A subassembly
Title: Cytochrome c oxidase subassemblies in fibroblast cultures from patients carrying mutations in COX10, SCO1, or SURF1.

Submit: New GeneRIF Correction

Phenotypes

Go to the top of the page Help

Find tests for this gene in the NIH Genetic Testing Registry (GTR)

Review eQTL and phenotype association data in this region using PheGenI

Associated conditions

Description	Tests
Mitochondrial complex 4 deficiency, nuclear type 20 MedGen: C5436726 OMIM: 619064 GeneReviews: Not available	not available

EBI GWAS Catalog

Description
Genome-wide meta-analysis identifies regions on 7p21 (AHR) and 15q24 (CYP1A2) as determinants of habitual caffeine consumption. EBI GWAS Catalog EBI GWAS CatalogPubMed

Variation

Go to the top of the page Help

See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

HIV-1 interactions

Go to the top of the page Help

Protein interactions

Protein	Gene	Interaction	Pubs
Envelope transmembrane glycoprotein gp41	env	HIV-1 gp41 is identified to have a physical interaction with cytochrome c oxidase subunit Va (COX5A) in human HEK293 and/or Jurkat cell lines by using affinity tagging and purification mass spectrometry analyses	PubMed
Tat	tat	Tat-induced mitochondrial membrane permeabilization is associated with inhibition of cytochrome c oxidase (COX) activity by Tat in disrupted mitochondria from human samples	PubMed

Go to the HIV-1, Human Interaction Database

Interactions

Go to the top of the page Help

Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

Go to the top of the page Help

Markers

SHGC-35356 (e-PCR)
- UniSTS:60164

RH78933 (e-PCR)
- UniSTS:42872

STS-AA040864 (e-PCR)
- UniSTS:8413

RH68089 (e-PCR)
- UniSTS:84214

Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables cytochrome-c oxidase activity	TAS Traceable Author Statement more info	PubMed
enables electron transfer activity	TAS Traceable Author Statement more info	PubMed
enables metal ion binding	IEA Inferred from Electronic Annotation more info
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed

Process	Evidence Code	Pubs
involved_in cellular respiration	NAS Non-traceable Author Statement more info	PubMed
involved_in mitochondrial electron transport, cytochrome c to oxygen	IBA Inferred from Biological aspect of Ancestor more info
involved_in mitochondrial electron transport, cytochrome c to oxygen	NAS Non-traceable Author Statement more info	PubMed
involved_in proton transmembrane transport	IEA Inferred from Electronic Annotation more info

Component	Evidence Code	Pubs
located_in mitochondrial inner membrane	IDA Inferred from Direct Assay more info	PubMed
located_in mitochondrial inner membrane	TAS Traceable Author Statement more info
located_in mitochondrial intermembrane space	TAS Traceable Author Statement more info
located_in mitochondrial membrane	IDA Inferred from Direct Assay more info	PubMed
located_in mitochondrion	HTP more info	PubMed
part_of respiratory chain complex IV	IBA Inferred from Biological aspect of Ancestor more info
part_of respiratory chain complex IV	IDA Inferred from Direct Assay more info	PubMed
part_of respiratory chain complex IV	IMP Inferred from Mutant Phenotype more info	PubMed

General protein information

Go to the top of the page Help

Preferred Names: cytochrome c oxidase subunit 5A, mitochondrial

Names: cytochrome c oxidase polypeptide Va; cytochrome c oxidase polypeptide, mitochondrial; cytochrome c oxidase subunit Va; mitochondrial cytochrome c oxidase subunit Va

NP_004246.2

EC 7.1.1.9

NCBI Reference Sequences (RefSeq)

Go to the top of the page Help

NEW Try the new Transcript table

RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

mRNA and Protein(s)

NM_004255.4 → NP_004246.2 cytochrome c oxidase subunit 5A, mitochondrial precursor

See identical proteins and their annotated locations for NP_004246.2

Status: REVIEWED

Source sequence(s)

AC125435, AI815421, AK026623

Consensus CDS

CCDS10273.1

UniProtKB/Swiss-Prot

P20674, P30045, Q8TB65

Related

ENSP00000317780.6, ENST00000322347.11

Conserved Domains (1) summary

cd00923
Location:45 → 146

Cyt_c_Oxidase_Va; Cytochrome c oxidase subunit Va. Cytochrome c oxidase (CcO), the terminal oxidase in the respiratory chains of eukaryotes and most bacteria, is a multi-chain transmembrane protein located in the inner membrane of mitochondria and the cell membrane of ...