coenzyme Q

Viewing posts tagged coenzyme Q

Study reveals the protein machinery central to CoQ trafficking in yeast

Beyond its role in mitochondrial bioenergetics, Coenzyme Q (CoQ, ubiquinone) serves as a key membrane-embedded antioxidant throughout the cell. However, how CoQ is moved from its site of synthesis on the inner mitochondrial membrane to other sites remains a longstanding mystery. In a recent study, researchers identified two highly conserved but poorly characterized mitochondrial proteins that affect this process. Their results reveal the protein machinery central to CoQ trafficking in yeast and lend insights into the broader interplay between mitochondria and the rest of the cell.

Read the article: UbiB proteins regulate cellular CoQ distribution in Saccharomyces cerevisiae

New features in Coenzyme Q identitifed

Coenzyme Q (CoQ), an essential lipid, is manufactured by virtually all cells, but how eukaryotes make the universal CoQ head group precursor 4-hydroxybenzoate (4-HB) from tyrosine is unknown. In this study, Robinson et al. study this pathway with genetic screens, targeted LC-MS, and chemical genetics. The results of their work defines new features of 4-HB synthesis in yeast, demonstrate the redundant nature of this pathway, and provide a foundation for further study.

Read the article: Defining intermediates and redundancies in coenzyme Q precursor biosynthesis