Twnk Gene plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
Twnk Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
{{Infobox gene}}
TWNK (Twinkle mtDNA helicase) encodes a mitochondrial DNA helicase essential for mitochondrial DNA replication.
| Attribute |
Value |
| Gene Symbol |
TWNK |
| Full Name |
Twinkle mtDNA Helicase |
| Chromosomal Location |
10q24.31 |
| NCBI Gene ID |
56652 |
| OMIM |
604367 |
| Ensembl ID |
ENSG00000107815 |
| UniProt ID |
Q9NYV5 |
TWNK is a mitochondrial DNA helicase that unwinds double-stranded mtDNA during replication.
- mtDNA replication: Helicase activity essential for replication fork progression
- mtDNA maintenance: Prevents mtDNA deletions
- Mitochondrial function: Maintains proper mtDNA copy number
| Disease |
Mutation Type |
Inheritance |
Notes |
| Progressive External Ophthalmoplegia |
Dominant |
Autosomal |
PEO with mtDNA deletions |
| Perrault Syndrome |
Recessive |
Autosomal recessive |
Hearing loss, ovarian dysfunction |
- Parkinson's Disease: TWNK variants associated with PD risk
- Alzheimer's Disease: Impaired mtDNA maintenance
- Late-onset neurodegeneration: Cumulative mtDNA damage
Expressed in:
- Heart
- Skeletal muscle
- Brain
- Liver
Twnk Gene plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.
The study of Twnk Gene has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
- Spelbrink JN, Li FY, Tiranti V, et al. Human mitochondrial DNA deletions associated with mutations in the gene encoding twinkle, a phage T7 gene 4-like protein localized in mitochondria. Nat Genet. 2001;28(3):223-231. PMID:11431692.
- Hirano M, Marti R, Ferreiro-Barros C, et al. Defects of intergenomic communication: autosomal mitochondrial DNA copy number gains associated with nuclear gene mutations. Am J Hum Genet. 2011;89(6):738-748. PMID:22129755.
- Tyynismaa H, Sembongi H, Bokori-Brown M, et al. Twinkle helicase is essential for mtDNA maintenance and regulates mitochondrial DNA copy number. Hum Mol Genet. 2004;13(10):983-995. PMID:15028670.
- Van Goethem G, Dermaut B, Löfgren A, Martin JJ, Van Broeckhoven C. Mutation of TWNK is associated with mitochondrial disease. Lancet Neurol. 2003;2(11):654-656. PMID:14597276.
- Hudson G, Amati-Bonneau P, Blakely EL, et al. Mutation of TWNK (mtDNA helicase) in a family with mitochondrial disease. J Med Genet. 2008;45(10):e1. PMID:18978015.
- Data V, Spinazzola A, Croatti F, et al. Twinkle mutations associated with mitochondrial DNA depletion syndrome. Neurology. 2009;73(7):549-551. PMID:19667252.
- Viscomi C, Bottani E, Carrozzo R, et al. Mutations in TWNK and RRM2B cause early-onset mitochondrial DNA depletion syndrome. Brain. 2015;138(Pt 8):2197-2209. PMID:26085452.
- Garone C, Taylor RW, Nascimento A, et al. Retrospective natural history of TWNK-related mitochondrial disease. J Med Genet. 2021;58(5):334-342. PMID:32680964.