Structural Basis for Inhibition of ROS-Producing Respiratory Complex I by NADH-OH

Marta Vranas, Daniel Wohlwend, Danye Qiu, Stefan Gerhardt, Christian Trncik, Mehrosh Pervaiz, Kevin Ritter, Stefan Steimle, Antonio Randazzo, Oliver Einsle, Stefan Günther, Henning J. Jessen, Alexander Kotlyar, Thorsten Friedrich

Research output: Contribution to journalArticlepeer-review

Abstract

NADH:ubiquinone oxidoreductase, respiratory complex I, plays a central role in cellular energy metabolism. As a major source of reactive oxygen species (ROS) it affects ageing and mitochondrial dysfunction. The novel inhibitor NADH-OH specifically blocks NADH oxidation and ROS production by complex I in nanomolar concentrations. Attempts to elucidate its structure by NMR spectroscopy have failed. Here, by using X-ray crystallographic analysis, we report the structure of NADH-OH bound in the active site of a soluble fragment of complex I at 2.0 Å resolution. We have identified key amino acid residues that are specific and essential for binding NADH-OH. Furthermore, the structure sheds light on the specificity of NADH-OH towards the unique Rossmann-fold of complex I and indicates a regulatory role in mitochondrial ROS generation. In addition, NADH-OH acts as a lead-structure for the synthesis of a novel class of ROS suppressors.

Original languageEnglish
Pages (from-to)27277-27281
Number of pages5
JournalAngewandte Chemie - International Edition
Volume60
Issue number52
DOIs
StatePublished - 20 Dec 2021

Keywords

  • NADH:ubiquinone oxidoreductase
  • electron transport
  • inhibitors
  • reactive oxygen species
  • structural biology

All Science Journal Classification (ASJC) codes

  • Catalysis
  • General Chemistry

Fingerprint

Dive into the research topics of 'Structural Basis for Inhibition of ROS-Producing Respiratory Complex I by NADH-OH'. Together they form a unique fingerprint.

Cite this