The profound influence of lipid composition on the catalysis of the drug target nadh type ii oxidoreductase

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Abstract

Lipids play a pivotal role in cellular respiration, providing the natural environment in which an oxidoreductase interacts with the quinone pool. To date, it is generally accepted that negatively charged lipids play a major role in the activity of quinone oxidoreductases. By changing lipid compositions when assaying a type II NADH:quinone oxidoreductase, we demonstrate that phosphatidylethanolamine has an essential role in substrate binding and catalysis. We also reveal the importance of acyl chain composition, specifically c14:0, on membrane-bound quinone-mediated catalysis. This demonstrates that oxidoreductase lipid specificity is more diverse than originally thought and that the lipid environment plays an important role in the physiological catalysis of membrane-bound oxidoreductases.

Original languageEnglish
Article number363
Number of pages8
JournalMembranes
Volume11
Issue number5
DOIs
Publication statusPublished - 2021

Keywords

  • Acyl chain
  • Biomimetic membrane
  • Lipids
  • Type II NADH:quinone oxidoreductase

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