Molecules (Aug 2021)

Inhibitors of Fumarylacetoacetate Hydrolase Domain Containing Protein 1 (FAHD1)

  • Alexander K. H. Weiss,
  • Richard Wurzer,
  • Patrycia Klapec,
  • Manuel Philip Eder,
  • Johannes R. Loeffler,
  • Susanne von Grafenstein,
  • Stefania Monteleone,
  • Klaus R. Liedl,
  • Pidder Jansen-Dürr,
  • Hubert Gstach

DOI
https://doi.org/10.3390/molecules26165009
Journal volume & issue
Vol. 26, no. 16
p. 5009

Abstract

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FAH domain containing protein 1 (FAHD1) acts as oxaloacetate decarboxylase in mitochondria, contributing to the regulation of the tricarboxylic acid cycle. Guided by a high-resolution X-ray structure of FAHD1 liganded by oxalate, the enzymatic mechanism of substrate processing is analyzed in detail. Taking the chemical features of the FAHD1 substrate oxaloacetate into account, the potential inhibitor structures are deduced. The synthesis of drug-like scaffolds afforded first-generation FAHD1-inhibitors with activities in the low micromolar IC50 range. The investigations disclosed structures competing with the substrate for binding to the metal cofactor, as well as scaffolds, which may have a novel binding mode to FAHD1.

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