Impaired complex I assembly in a Leigh syndrome patient with a novel missense mutation in the ND6 gene.
Article Details
- CitationCopy to clipboard
Ugalde C, Triepels RH, Coenen MJ, van den Heuvel LP, Smeets R, Uusimaa J, Briones P, Campistol J, Majamaa K, Smeitink JA, Nijtmans LG
Impaired complex I assembly in a Leigh syndrome patient with a novel missense mutation in the ND6 gene.
Ann Neurol. 2003 Nov;54(5):665-9.
- PubMed ID
- 14595656 [ View in PubMed]
- Abstract
We describe a novel mutation in the ND6 gene (T14487C) in a patient with Leigh syndrome. Biochemical analyses indicated a low complex I activity in the patient's fibroblasts but normal values in muscle and liver. Cybrid clones showed a specific complex I defect that correlates with the mutant heteroplasmy levels. Additionally, we demonstrate an altered mobility and a decrease in the levels of fully assembled complex I in the patient's fibroblasts and cybrids, suggesting that the mutation has a profound effect on complex I assembly and/or stability.