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Coenzyme Q10 deficiencies: pathways in yeast and humans
Agape M Awad1, Michelle C Bradley1, Lucía Fernández-Del-Río1
1Department of Chemistry and Biochemistry, Molecular Biology Institute, UCLA, Los Angeles, CA 90095, U.S.A.
Essays in Biochemistry
|July 8, 2018
Summary
Coenzyme Q (CoQ) biosynthesis in yeast models human pathways, revealing conserved gene functions. This research explores CoQ synthesis, its importance, and potential therapeutic strategies for CoQ deficiencies.
Area of Science:
- Biochemistry
- Molecular Biology
- Cell Biology
Background:
- Coenzyme Q (CoQ), an essential lipid, is vital for mitochondrial electron transport and acts as an antioxidant.
- CoQ synthesis in humans and yeast involves aromatic ring precursors and the isoprene biosynthetic pathway.
- Yeast Saccharomyces cerevisiae coq mutants are established models for studying CoQ biosynthesis.
Purpose of the Study:
- To review Coenzyme Q biosynthesis in yeast.
- To highlight the relevance of the yeast model for understanding human CoQ biosynthesis.
- To explore the functional conservation of CoQ biosynthesis genes between yeast and humans.
Main Methods:
- Review of existing literature on CoQ biosynthesis in yeast and human cells.
- Analysis of gene homology and functional complementation studies between yeast COQ genes and human homologs.
- Investigation of multisubunit complexes involved in CoQ synthesis (CoQ synthome/Complex Q).
Main Results:
- Yeast COQ1-COQ11 genes are crucial for CoQ biosynthesis.
- Human homologs of yeast COQ1-COQ10 genes can restore CoQ production in yeast mutants, demonstrating significant functional conservation.
- CoQ biosynthesis relies on high molecular mass complexes (CoQ synthome/Complex Q) in both yeast and human cells.
Conclusions:
- The yeast coq mutant system is a powerful and effective model for studying CoQ biosynthesis and human COQ gene mutations.
- Understanding CoQ biosynthesis in yeast provides insights into human CoQ deficiencies.
- Natural products may offer therapeutic potential by enhancing CoQ biosynthesis or bypassing deficient steps in the pathway.
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