Experimental Data Snapshot

  • Resolution: 2.20 Å
  • R-Value Work: 0.174 

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The structure of Pyrococcus furiosus glutamate dehydrogenase reveals a key role for ion-pair networks in maintaining enzyme stability at extreme temperatures.

Yip, K.S.Stillman, T.J.Britton, K.L.Artymiuk, P.J.Baker, P.J.Sedelnikova, S.E.Engel, P.C.Pasquo, A.Chiaraluce, R.Consalvi, V.Scandurra, R.Rice, D.W.

(1995) Structure 3: 1147-1158

  • DOI: https://doi.org/10.1016/s0969-2126(01)00251-9
  • Primary Citation of Related Structures:  
    1GTM, 1HRD

  • PubMed Abstract: 

    The hyperthermophile Pyrococcus furiosus is one of the most thermostable organisms known, with an optimum growth temperature of 100 degrees C. The proteins from this organism display extreme thermostability. We have undertaken the structure determination of glutamate dehydrogenase from P. furiosus in order to gain further insights into the relationship between molecular structure and thermal stability. The structure of P. furiosus glutamate dehydrogenase, a homohexameric enzyme, has been determined at 2.2 A resolution and compared with the structure of glutamate dehydrogenase from the mesophile Clostridium symbiosum. Comparison of the structures of these two enzymes has revealed one major difference: the structure of the hyperthermophilic enzyme contains a striking series of ion-pair networks on the surface of the protein subunits and buried at both interdomain and intersubunit interfaces. We propose that the formation of such extended networks may represent a major stabilizing feature associated with the adaptation of enzymes to extreme temperatures.

  • Organizational Affiliation

    The Krebs Institute for Biomolecular Research, Department of Molecular Biology and Biotechnology, University of Sheffield, PO Box 594, Sheffield S10 2UH, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C
419Pyrococcus furiosus DSM 3638Mutation(s): 0 
Find proteins for P80319 (Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1))
Explore P80319 
Go to UniProtKB:  P80319
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP80319
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.20 Å
  • R-Value Work: 0.174 
  • Space Group: P 42 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 167.2α = 90
b = 167.2β = 90
c = 172.9γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1997-01-11
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Source and taxonomy, Version format compliance
  • Version 1.3: 2012-02-22
    Changes: Database references
  • Version 1.4: 2024-02-07
    Changes: Data collection, Database references, Derived calculations, Other