TWNK

twinkle mtDNA helicase

10q24.31

Also known as: ATXN8, C10orf2, IOSCA, MTDPS7, PEO, PEO1, PEOA3, PRLTS5, SANDO, SCA8, TWINL

Gene Summary

RefSeq / NCBI

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 replication. The protein localizes to the mitochondrial matrix and mitochondrial nucleoids. Mutations in this gene cause infantile onset spinocerebellar ataxia (IOSCA) and progressive external ophthalmoplegia (PEO) and are also associated with several mitochondrial depletion syndromes. Alternative splicing results in multiple transcript variants encoding distinct isoforms.[provided by RefSeq, Aug 2009]

External Resources

WUSTL Neuromuscular

Washington University Disease Center

ClinGen

Clinical Genome Resource

G2P

Gene-to-Phenotype (EBI)

GeneReviews

NCBI Expert-Authored Reviews

NCBI Gene

National Center for Biotechnology Information

PubMed

Biomedical Literature

UniProt

Universal Protein Resource

DECIPHER

DatabasE of genomiC varIation and Phenotype in Humans

Gene data compiled from the Washington University Neuromuscular Disease Center, NCBI Gene, and OMIM. For clinical use, always refer to primary sources.