Communications Biology (Nov 2021)

Roles of metal ions in the selective inhibition of oncogenic variants of isocitrate dehydrogenase 1

  • Shuang Liu,
  • Martine I. Abboud,
  • Tobias John,
  • Victor Mikhailov,
  • Ingvild Hvinden,
  • John Walsby-Tickle,
  • Xiao Liu,
  • Ilaria Pettinati,
  • Tom Cadoux-Hudson,
  • James S. O. McCullagh,
  • Christopher J. Schofield

DOI
https://doi.org/10.1038/s42003-021-02743-5
Journal volume & issue
Vol. 4, no. 1
pp. 1 – 16

Abstract

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Liu et al investigate the effects of divalent metal ions on catalysis and inhibition of the enzyme isocitrate dehydrogenase (IDH) and its cancer-linked variant R132H. They further identify the substrates for IDH as complexes with Mg2+ and show that allosteric inhibitors work by weakening Mg2+ binding of R132H, providing mechanistic insights into the basis for selective R132H IDH1 inhibition.