Nature Communications (Jan 2021)

Heme-binding enables allosteric modulation in an ancient TIM-barrel glycosidase

  • Gloria Gamiz-Arco,
  • Luis I. Gutierrez-Rus,
  • Valeria A. Risso,
  • Beatriz Ibarra-Molero,
  • Yosuke Hoshino,
  • Dušan Petrović,
  • Jose Justicia,
  • Juan Manuel Cuerva,
  • Adrian Romero-Rivera,
  • Burckhard Seelig,
  • Jose A. Gavira,
  • Shina C. L. Kamerlin,
  • Eric A. Gaucher,
  • Jose M. Sanchez-Ruiz

DOI
https://doi.org/10.1038/s41467-020-20630-1
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 16

Abstract

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Family 1 glycosidases (GH1) are present in the three domains of life and share classical TIM-barrel fold. Structural and biochemical analyses of a resurrected ancestral GH1 enzyme reveal heme binding, not known in its modern descendants. Heme rigidifies the TIM-barrel and allosterically enhances catalysis.