Gene Gene information from NCBI Gene database.
Entrez ID 56652
Gene name Twinkle mtDNA helicase
Gene symbol TWNK
Synonyms (NCBI Gene)
ATXN8C10orf2IOSCAMTDPS7PEOPEO1PEOA3PRLTS5SANDOSCA8TWINL
Chromosome 10
Chromosome location 10q24.31
Summary This gene encodes a hexameric DNA helicase which unwinds short stretches of double-stranded DNA in the 5` to 3` direction and, along with mitochondrial single-stranded DNA binding protein and mtDNA polymerase gamma, is thought to play a key role in mtDNA
SNPs SNP information provided by dbSNP.
21
SNP ID Visualize variation Clinical significance Consequence
rs80356540 A>G Pathogenic Missense variant, non coding transcript variant, coding sequence variant
rs80356541 C>T Pathogenic Intron variant, synonymous variant, 5 prime UTR variant, coding sequence variant, non coding transcript variant
rs80356544 C>T Pathogenic Missense variant, non coding transcript variant, coding sequence variant
rs111033572 G>C Pathogenic Missense variant, non coding transcript variant, coding sequence variant
rs111033574 G>A,C,T Pathogenic Stop gained, missense variant, non coding transcript variant, coding sequence variant
miRNA miRNA information provided by mirtarbase database.
9
miRTarBase ID miRNA Experiments Reference
MIRT528625 hsa-miR-4747-3p PAR-CLIP 22012620
MIRT528624 hsa-miR-4717-3p PAR-CLIP 22012620
MIRT528623 hsa-miR-4267 PAR-CLIP 22012620
MIRT528622 hsa-miR-6741-3p PAR-CLIP 22012620
MIRT528621 hsa-miR-4638-5p PAR-CLIP 22012620
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
37
GO ID Ontology Definition Evidence Reference
GO:0000166 Function Nucleotide binding IEA
GO:0000262 Component Mitochondrial chromosome IDA 26253742
GO:0002020 Function Protease binding IPI 14739292
GO:0003678 Function DNA helicase activity IBA
GO:0003678 Function DNA helicase activity IEA
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
606075 1160 ENSG00000107815
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
Q96RR1
Protein name Twinkle mtDNA helicase (EC 5.6.2.3) (Progressive external ophthalmoplegia 1 protein) (T7 gp4-like protein with intramitochondrial nucleoid localization) (T7-like mitochondrial DNA helicase) (Twinkle protein, mitochondrial)
Protein function [Isoform 1]: Mitochondrial helicase involved in mtDNA replication and repair (PubMed:12975372, PubMed:15167897, PubMed:17324440, PubMed:18039713, PubMed:18971204, PubMed:25824949, PubMed:26887820, PubMed:27226550). Might have a role in mtDNA rep
PDB 7T8B , 7T8C
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF13481 AAA_25 374 564 Domain
Tissue specificity TISSUE SPECIFICITY: High relative levels in skeletal muscle, testis and pancreas. Lower levels of expression in the heart, brain, placenta, lung, liver, kidney, spleen, thymus, prostate, ovary, small intestine, colon and leukocytes. Expression is coregula
Sequence
MWVLLRSGYPLRILLPLRGEWMGRRGLPRNLAPGPPRRRYRKETLQALDMPVLPVTATEI
RQYLRGHGIPFQDGHSCLRALSPFAESSQLKGQTGVTTSFSLFIDKTTGHFLCMTSLAEG
SWEDFQASVEGRGDGAREGFLLSKAPEFEDSEEVRRIWNRAIPLWELPDQEEVQLADTMF
GLTKVTDDTLKRFSVRYLRPARSLVFPWFSPGGSGLRGLKLLEAKCQGDGVSYEETTIPR
PSAYHNLFGLPLISRRDAEVVLTSRELDSLALNQSTGLPTLTLPRGTTCLPPALLPYLEQ
FRRIVFWLGDDLRSWEAAKLFARKLNPKRCFLVRPGDQQPRPLEALNGGFNLSRILRTAL
PAWHKSIVSFRQLREEVLGELSNVEQAAGLRWSRFPDLNRILKGHRKGELTVFTGPTGSG
KTTFISEYALDLCSQGVNTLWGSFEISNVRLARVMLTQFAEGRLEDQLDKYDHWADRFED
LPLYFMTFHGQQSIRTVIDTMQHAVYVYDICHVIIDNLQFMMGHEQLSTDRIAAQDYIIG
VFRKFATDNNCHVTLVIHPRKEDD
DKELQTASIFGSAKASQEADNVLILQDRKLVTGPGK
RYLQVSKNRFDGDVGVFPLEFNKNSLTFSIPPKNKARLKKIKDDTGPVAKKPSSGKKGAT
TQNSEICSGQAPTPDQPDTSKRSK
Sequence length 684
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG  Reactome
  Spinocerebellar ataxia   Transcriptional activation of mitochondrial biogenesis
Associated diseases Disease associations from ClinVar (causal & non-causal) and other databases (OMIM, Orphanet, GWAS, etc.).
44
Evidence Score: ★☆☆☆☆  Gene-disease association found in Text Mining only ★★☆☆☆  Found in Text Mining and Unknown/Other Associations ★★★☆☆  Reported in Unknown/Other Associations across ≥2 Sources ★★★★☆  ClinVar: Pathogenic/Likely Pathogenic (<5 Variants) ★★★★★  ClinVar: Pathogenic/Likely Pathogenic (≥5 Variants)
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession Evidence Score
Auditory neuropathy Likely pathogenic rs756073260, rs757583061 RCV003484478
RCV003484485
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Infantile onset spinocerebellar ataxia Pathogenic; Likely pathogenic rs2493642676, rs111033574, rs28937887, rs80356544, rs80356540, rs80356542, rs533720034, rs863223919, rs886037832, rs1564808324, rs1590020571, rs779142717, rs781016340, rs1366090807 RCV002287306
RCV002496262
RCV001542762
RCV000004889
RCV000020865
RCV000020866
RCV005412435
RCV004579540
RCV000240394
RCV005231310
RCV000790907
RCV000855767
RCV000855762
RCV000855765
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Mitochondrial disease Likely pathogenic; Pathogenic rs757068910, rs111033573, rs111033577, rs28937887, rs1554887097, rs1554887213, rs1554887222 RCV003389267
RCV000508874
RCV000508905
RCV000508769
RCV000508920
RCV000508722
RCV000508820
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
mitochondrial hepatopathy Likely pathogenic rs1590018153, rs1451037596 RCV000855766
RCV000855768
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Unknown / Other Associations ClinVar entries with uncertain/conflicting evidence, and associations from other databases (OMIM, Orphanet, GWAS, etc.) where the gene is not established as causal.
Phenotype Name Clinical Significance Source Evidence Score
Ataxia Neuropathy Spectrum Disorders Conflicting classifications of pathogenicity; Likely benign; Uncertain significance ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
AUTOSOMAL DOMINANT PROGRESSIVE EXTERNAL OPHTHALMOPLEGIA Disgenet, GWAS catalog, Orphanet
Disgenet, GWAS catalog, Orphanet
Disgenet, GWAS catalog, Orphanet
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Autosomal recessive cerebellar ataxia Conflicting classifications of pathogenicity; Benign; Uncertain significance; Likely benign ClinVar
Disgenet
★★★☆☆
Reported in Unknown/Other Associations (≥2 sources)
BILATERAL PTOSIS Disgenet
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Associations from Text MiningDisease associations identified through Pubtator
Disease Name Relationship Type References Evidence Score
Alcoholic Neuropathy Associate 24816431
★☆☆☆☆
Found in Text Mining only
Ataxia Associate 31852434, 37932750
★☆☆☆☆
Found in Text Mining only
Atrophy Associate 28178980
★☆☆☆☆
Found in Text Mining only
Auditory neuropathy Associate 39340975
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Brain Stem Neoplasms Associate 37316776
★☆☆☆☆
Found in Text Mining only
Carcinoma Ovarian Epithelial Associate 22233925
★☆☆☆☆
Found in Text Mining only
Cerebellar Ataxia Associate 32234020
★☆☆☆☆
Found in Text Mining only
Deafness Associate 32234020, 33095980
★☆☆☆☆
Found in Text Mining only
Depressive Disorder Associate 31852434
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Disease Associate 25355836
★☆☆☆☆
Found in Text Mining only