COX6A1

cytochrome c oxidase subunit 6A1

Gene Function

Component of the cytochrome c oxidase, the last enzyme in the mitochondrial electron transport chain which drives oxidative phosphorylation. The respiratory chain contains 3 multisubunit complexes succinate dehydrogenase (complex II, CII), ubiquinol-cytochrome c oxidoreductase (cytochrome b-c1 complex, complex III, CIII) and cytochrome c oxidase (complex IV, CIV), that cooperate to transfer electrons derived from NADH and succinate to molecular oxygen, creating an electrochemical gradient over the inner membrane that drives transmembrane transport and the ATP synthase. Cytochrome c oxidase is the component of the respiratory chain that catalyzes the reduction of oxygen to water. Electrons originating from reduced cytochrome c in the intermembrane space (IMS) are transferred via the dinuclear copper A center (CU(A)) of subunit 2 and heme A of subunit 1 to the active site in subunit 1, a binuclear center (BNC) formed by heme A3 and copper B (CU(B)). The BNC reduces molecular oxygen to 2 water molecules unsing 4 electrons from cytochrome c in the IMS and 4 protons from the mitochondrial matrix Source: UniProt

Relationship to CMT

CMTRI AR
1 subtype
12q24.31
First described 2014
Mitochondrial involvement

Subtype Inheritance Class OMIM Sentinel Publication
SubtypeCMTRID Inheritanceautosomal recessive ClassCMTRI OMIM616039 Sentinel Publication

2014 · 10.1016/j.ajhg.2014.07.013

Stored Identifiers

HGNC Aliases: COX6AL
hgnc_idHGNC:2277
ensembl_gene_idENSG00000111775
coords_grch38chr12:120438090-120440742
coords_grch37chr12:120875893-120878545
entrez_id1337
omim_gene602072
uniprot_idsP12074
refseq_accessionNM_004373
mane_refseqNM_004373.4
mane_ensemblENST00000229379.3

ClinVar Variants

Pathogenic and likely pathogenic variants in COX6A1, as classified in ClinVar, are read live from NCBI. Only aggregate germline records are shown. Uncertain and conflicting classifications are not. Experts in CMT makes no claim to the accuracy of ClinVar data. This index is provided for informational purposes only.

Review stars are ClinVar’s measure of how well a classification is supported: four for a practice guideline, three for an expert panel review, two for agreement among multiple submitters, one for a single submitter with criteria provided, and none where no criteria were provided.

Reported in CMT
Reported in Other Diseases

Reported in a disease other than CMT. Listed apart rather than counted as CMT variants.

Variants w/o a Recorded Disease

Pathogenic or likely pathogenic in ClinVar, submitted without a disease recorded.

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