Communications Biology (Jun 2021)

3D architecture and structural flexibility revealed in the subfamily of large glutamate dehydrogenases by a mycobacterial enzyme

  • Melisa Lázaro,
  • Roberto Melero,
  • Charlotte Huet,
  • Jorge P. López-Alonso,
  • Sandra Delgado,
  • Alexandra Dodu,
  • Eduardo M. Bruch,
  • Luciano A. Abriata,
  • Pedro M. Alzari,
  • Mikel Valle,
  • María-Natalia Lisa

DOI
https://doi.org/10.1038/s42003-021-02222-x
Journal volume & issue
Vol. 4, no. 1
pp. 1 – 8

Abstract

Read online

Lázaro et. al. report the first 3D structure of a large glutamate dehydrogenase (L-GDH), the one corresponding to the Mycobacterium smegmatis enzyme composed of 180 kDa subunits (mL-GDH180), obtained by X-ray crystallography and cryo-electron microscopy. This structure reveals that mL-GDH180 assembles as tetramers with the N- and C-terminal domains being involved in inter-subunit contacts and unveils unique features of the subfamily of L-GDHs.