Article (Scientific journals)
A NAD-dependent glutamate dehydrogenase coordinates metabolism with cell division in Caulobacter crescentus.
Beaufay, François; Coppine, Jérôme; Mayard, Aurélie et al.
2015In EMBO Journal, 34 (13), p. 1786 - 1800
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Keywords :
FtsZ; GdhZ; cell division; cytokinesis; glutamate dehydrogenase; Bacterial Proteins; Cytoskeletal Proteins; FtsZ protein, Bacteria; NAD; Glutamate Dehydrogenase; Bacterial Proteins/metabolism; Caulobacter crescentus/cytology; Caulobacter crescentus/enzymology; Caulobacter crescentus/genetics; Caulobacter crescentus/metabolism; Cell Division/genetics; Cytoskeletal Proteins/metabolism; Gene Deletion; Glutamate Dehydrogenase/metabolism; Glutamate Dehydrogenase/physiology; NAD/metabolism; Organisms, Genetically Modified; Protein Binding; Caulobacter crescentus; Neuroscience (all); Molecular Biology; Biochemistry, Genetics and Molecular Biology (all); Immunology and Microbiology (all)
Abstract :
[en] Coupling cell cycle with nutrient availability is a crucial process for all living cells. But how bacteria control cell division according to metabolic supplies remains poorly understood. Here, we describe a molecular mechanism that coordinates central metabolism with cell division in the α-proteobacterium Caulobacter crescentus. This mechanism involves the NAD-dependent glutamate dehydrogenase GdhZ and the oxidoreductase-like KidO. While enzymatically active GdhZ directly interferes with FtsZ polymerization by stimulating its GTPase activity, KidO bound to NADH destabilizes lateral interactions between FtsZ protofilaments. Both GdhZ and KidO share the same regulatory network to concomitantly stimulate the rapid disassembly of the Z-ring, necessary for the subsequent release of progeny cells. Thus, this mechanism illustrates how proteins initially dedicated to metabolism coordinate cell cycle progression with nutrient availability.
Disciplines :
Microbiology
Biochemistry, biophysics & molecular biology
Author, co-author :
Beaufay, François  ;  Université de Liège - ULiège > Département des sciences de la vie > Centre d'Ingénierie des Protéines (CIP) ; Bacterial Cell Cycle & Development (BCcD), URBM, University of Namur, Namur, Belgium
Coppine, Jérôme ;  Université de Liège - ULiège > Département GxABT > Microbial technologies ; Bacterial Cell Cycle & Development (BCcD), URBM, University of Namur, Namur, Belgium
Mayard, Aurélie;  Bacterial Cell Cycle & Development (BCcD), URBM, University of Namur, Namur, Belgium
Laloux, Géraldine;  de Duve Institute, Université catholique de Louvain, Brussels, Belgium
De Bolle, Xavier;  Bacterial Cell Cycle & Development (BCcD), URBM, University of Namur, Namur, Belgium
Hallez, Régis;  Bacterial Cell Cycle & Development (BCcD), URBM, University of Namur, Namur, Belgium regis.hallez@unamur.be
Language :
English
Title :
A NAD-dependent glutamate dehydrogenase coordinates metabolism with cell division in Caulobacter crescentus.
Publication date :
02 July 2015
Journal title :
EMBO Journal
ISSN :
0261-4189
eISSN :
1460-2075
Publisher :
Wiley-VCH Verlag, England
Volume :
34
Issue :
13
Pages :
1786 - 1800
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 13 January 2026

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