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TMEM126A transmembrane protein 126A [ Homo sapiens (human) ]

Gene ID: 84233, updated on 3-May-2025
Official Symbol
TMEM126Aprovided by HGNC
Official Full Name
transmembrane protein 126Aprovided by HGNC
Primary source
HGNC:HGNC:25382
See related
Ensembl:ENSG00000171202 MIM:612988; AllianceGenome:HGNC:25382
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
OPA7
Summary
The protein encoded by this gene is a mitochondrial membrane protein of unknown function. Defects in this gene are a cause of optic atrophy type 7 (OPA7). Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2011]
Expression
Ubiquitous expression in heart (RPKM 18.8), testis (RPKM 17.5) and 25 other tissues See more
Orthologs
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See TMEM126A in Genome Data Viewer
Location:
11q14.1
Exon count:
5
Annotation release Status Assembly Chr Location
RS_2024_08 current GRCh38.p14 (GCF_000001405.40) 11 NC_000011.10 (85647967..85656542)
RS_2024_08 current T2T-CHM13v2.0 (GCF_009914755.1) 11 NC_060935.1 (85584644..85593220)
RS_2024_09 previous assembly GRCh37.p13 (GCF_000001405.25) 11 NC_000011.9 (85359011..85367586)

Chromosome 11 - NC_000011.10Genomic Context describing neighboring genes Neighboring gene discs large MAGUK scaffold protein 2 Neighboring gene H3K27ac hESC enhancer GRCh37_chr11:85248765-85249264 Neighboring gene H3K27ac-H3K4me1 hESC enhancer GRCh37_chr11:85250835-85251373 Neighboring gene RNA, U6 small nuclear 1292, pseudogene Neighboring gene BRD4-independent group 4 enhancer GRCh37_chr11:85317081-85318280 Neighboring gene OCT4-NANOG hESC enhancer GRCh37_chr11:85319023-85319982 Neighboring gene MPRA-validated peak1373 silencer Neighboring gene MPRA-validated peak1374 silencer Neighboring gene ATAC-STARR-seq lymphoblastoid active region 5364 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 5365 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 5363 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 5362 Neighboring gene H3K27ac hESC enhancer GRCh37_chr11:85338434-85338942 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 5366 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 5367 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 5368 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 5369 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 5370 Neighboring gene H3K4me1 hESC enhancer GRCh37_chr11:85383205-85383705 Neighboring gene H3K4me1 hESC enhancer GRCh37_chr11:85396033-85396534 Neighboring gene H3K4me1 hESC enhancer GRCh37_chr11:85396535-85397034 Neighboring gene transmembrane protein 126B Neighboring gene CREB/ATF bZIP transcription factor Neighboring gene coiled-coil domain containing 89

Go to nucleotide: Graphics FASTA GenBank

  • Project title: Tissue-specific circular RNA induction during human fetal development
  • Description: 35 human fetal samples from 6 tissues (3 - 7 replicates per tissue) collected between 10 and 20 weeks gestational time were sequenced using Illumina TruSeq Stranded Total RNA
  • BioProject: PRJNA270632
  • Publication: PMID 26076956
  • Analysis date: Mon Apr 2 22:54:59 2018

Related articles in PubMed

  1. Novel likely pathogenic variants in TMEM126A identified in non-syndromic autosomal recessive optic atrophy: two case reports. Kloth K, et al. BMC Med Genet, 2019 Apr 8. PMID 30961538, Free PMC Article
  2. Loss of TMEM126A promotes extracellular matrix remodeling, epithelial-to-mesenchymal transition, and breast cancer metastasis by regulating mitochondrial retrograde signaling. Sun HF, et al. Cancer Lett, 2019 Jan. PMID 30393159
  3. TMEM126A is a mitochondrial located mRNA (MLR) protein of the mitochondrial inner membrane. Hanein S, et al. Biochim Biophys Acta, 2013 Jun. PMID 23500070
  4. TMEM126A mutation in a Moroccan family with autosomal recessive optic atrophy. Désir J, et al. Mol Vis, 2012. PMID 22815638, Free PMC Article
  5. Nonsense mutation in TMEM126A causing autosomal recessive optic atrophy and auditory neuropathy. Meyer E, et al. Mol Vis, 2010 Apr 13. PMID 20405026, Free PMC Article

See all (50) citations in PubMed

GeneRIFs: Gene References Into Functions

What's a GeneRIF?
  1. NDUFS3 depletion permits complex I maturation and reveals TMEM126A/OPA7 as an assembly factor binding the ND4-module intermediate.
    Title: NDUFS3 depletion permits complex I maturation and reveals TMEM126A/OPA7 as an assembly factor binding the ND4-module intermediate.
  2. Optic atrophy-associated TMEM126A is an assembly factor for the ND4-module of mitochondrial complex I.
    Title: Optic atrophy-associated TMEM126A is an assembly factor for the ND4-module of mitochondrial complex I.
  3. The loss of TMEM126A activated extracellular matrix (ECM) remodeling and promoted epithelial-to-mesenchymal transition (EMT). Moreover, TMEM126A silencing induced reactive oxygen species (ROS) production and mitochondrial membrane potential depolarization.
    Title: Loss of TMEM126A promotes extracellular matrix remodeling, epithelial-to-mesenchymal transition, and breast cancer metastasis by regulating mitochondrial retrograde signaling.
  4. Novel likely pathogenic variants in TMEM126A identified in non-syndromic autosomal recessive optic atrophy: two case reports
    Title: Novel likely pathogenic variants in TMEM126A identified in non-syndromic autosomal recessive optic atrophy: two case reports.
  5. TMEM126A is a mitochondrial located mRNA (MLR) that may be translated in the mitochondrial surface and the protein is subsequently imported to the inner membrane
    Title: TMEM126A is a mitochondrial located mRNA (MLR) protein of the mitochondrial inner membrane.
  6. The p.Arg55X mutation in TMEM126A, homozygous in all affected siblings and heterozygous in both unaffected parents, has been found in a Moroccan family with autosomal recessive optic atrophy.
    Title: TMEM126A mutation in a Moroccan family with autosomal recessive optic atrophy.
  7. Observational study of gene-disease association. (HuGE Navigator)
    Title: Genetic variants in nuclear-encoded mitochondrial genes influence AIDS progression.
  8. The first detailed phenotyping of patients with autosomal recessive TMEM126A-associated optic atrophy and auditory neuropathy, is described.
    Title: Nonsense mutation in TMEM126A causing autosomal recessive optic atrophy and auditory neuropathy.
  9. TMEM126A encodes a transmembrane mitochondrial protein of unknown function, supporting the view that mitochondrial dysfunction may be a hallmark of inherited optic neuropathies including isolated autosomal-recessive forms.
    Title: TMEM126A, encoding a mitochondrial protein, is mutated in autosomal-recessive nonsyndromic optic atrophy.
Submit: New GeneRIF Correction

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
Autosomal recessive optic atrophy, OPA7 type
MedGen: C2751812 OMIM: 612989 GeneReviews: Not available
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EBI GWAS Catalog

Description
A genome-wide association study of northwestern Europeans involves the C-type natriuretic peptide signaling pathway in the etiology of human height variation.
EBI GWAS Catalog

See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

Products Interactant Other Gene Complex Source Pubs Description

Markers

Homology

Clone Names

  • DKFZp586C1924

Gene Ontology Provided by GOA

Process Evidence Code Pubs
involved_in mitochondrial protein quality control IDA
Inferred from Direct Assay
more info
 PubMed 
involved_in mitochondrial respiratory chain complex I assembly IBA
Inferred from Biological aspect of Ancestor
more info
  
involved_in mitochondrial respiratory chain complex I assembly IMP
Inferred from Mutant Phenotype
more info
 PubMed 
involved_in optic nerve development IMP
Inferred from Mutant Phenotype
more info
 PubMed 
involved_in protein insertion into mitochondrial inner membrane from matrix IDA
Inferred from Direct Assay
more info
 PubMed 
acts_upstream_of_or_within toll-like receptor 4 signaling pathway IEA
Inferred from Electronic Annotation
more info
  
Component Evidence Code Pubs
located_in membrane IEA
Inferred from Electronic Annotation
more info
  
is_active_in mitochondrial inner membrane IDA
Inferred from Direct Assay
more info
 PubMed 
located_in mitochondrial inner membrane IEA
Inferred from Electronic Annotation
more info
  
located_in mitochondrial inner membrane TAS
Traceable Author Statement
more info
  
located_in mitochondrion HTP PubMed 
is_active_in mitochondrion IBA
Inferred from Biological aspect of Ancestor
more info
  
located_in mitochondrion IDA
Inferred from Direct Assay
more info
 PubMed 
located_in mitochondrion IEA
Inferred from Electronic Annotation
more info
  
located_in plasma membrane IEA
Inferred from Electronic Annotation
more info
  
Preferred Names
transmembrane protein 126A
Names
optic atrophy 7

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.

Genomic

  1. NG_017157.2 RefSeqGene

    Range
    5049..13624
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. NM_001244735.2 → NP_001231664.1  transmembrane protein 126A isoform 2

    See identical proteins and their annotated locations for NP_001231664.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (2) differs in the 5' UTR and coding sequence compared to variant 1 by lacking the exon containing the translation start site. The resulting isoform (2) is shorter at the N-terminus compared to isoform 1.
    Source sequence(s)
    CD366181, DB454483
    Consensus CDS
    CCDS58165.1
    UniProtKB/Swiss-Prot
    Q9H061
    Related
    ENSP00000436590.1, ENST00000528105.5
    Conserved Domains (1) summary
    pfam07114
    Location:1 → 116
    TMEM126; Transmembrane protein 126

  2. NM_032273.4 → NP_115649.1  transmembrane protein 126A isoform 1

    See identical proteins and their annotated locations for NP_115649.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (1) represents the longer transcript and encodes the longer isoform (1).
    Source sequence(s)
    AK312081, AP000642, DB454483
    Consensus CDS
    CCDS8268.1
    UniProtKB/Swiss-Prot
    B2R570, E9PI16, Q9H061
    Related
    ENSP00000306887.2, ENST00000304511.7
    Conserved Domains (1) summary
    pfam07114
    Location:11 → 186
    TMEM126; Transmembrane protein 126

RefSeqs of Annotated Genomes: GCF_000001405.40-RS_2024_08

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference GRCh38.p14 Primary Assembly

Genomic

  1. NC_000011.10 Reference GRCh38.p14 Primary Assembly

    Range
    85647967..85656542
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

Alternate T2T-CHM13v2.0

Genomic

  1. NC_060935.1 Alternate T2T-CHM13v2.0

    Range
    85584644..85593220
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)
Nucleotide Protein
Heading Accession and Version
Protein Accession Links
GenPept Link UniProtKB Link
Q9H061.1 GenPept UniProtKB/Swiss-Prot:Q9H061

Gene LinkOut

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