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Mitochondrial oxidative phosphorylation system assembly in man: recent achievements
M J Coenen1, L P van den Heuvel, J A Smeitink
1Department of Paediatrics, Centre for Mitochondrial Disorders, University Medical Centre Nijmegen, PO Box 9101, 6500 HB Nijmegen, the Netherlands. j.smeitink@ckskg.azn.nl
Current Opinion in Neurology
|November 28, 2001
Summary
Genetic defects in oxidative phosphorylation (OXPHOS) system assembly genes cause complex deficiencies. Recent discoveries identify new assembly genes and mutations, advancing understanding of OXPHOS-related diseases.
Area of Science:
- Biochemistry
- Genetics
- Cell Biology
Background:
- The human oxidative phosphorylation (OXPHOS) system comprises five multi-subunit complexes.
- Subunits are encoded by mitochondrial and nuclear DNA, meaning mutations in either can cause deficiencies.
- Despite extensive research, many patients with OXPHOS deficiencies lack identified mutations in mitochondrial or nuclear structural genes.
Purpose of the Study:
- To review current knowledge on human OXPHOS assembly genes.
- To highlight recent progress in identifying assembly genes and associated mutations.
- To discuss the role of these genes in both health and disease.
Main Methods:
- Literature review of recent scientific publications.
- Analysis of identified human OXPHOS assembly genes.
- Correlation of mutations in assembly genes with OXPHOS-related diseases.
Main Results:
- Numerous mutations in nuclear OXPHOS genes have been identified in recent years.
- Several key human OXPHOS assembly genes have been identified.
- Mutations in these newly identified assembly genes are linked to OXPHOS complex deficiencies and related diseases.
Conclusions:
- OXPHOS assembly is a complex process involving proteins from both genomes.
- Genetic defects in OXPHOS assembly genes represent a significant cause of OXPHOS deficiencies.
- Understanding OXPHOS assembly genes is crucial for diagnosing and potentially treating related human diseases.