Experimental Data Snapshot

  • Resolution: 3.25 Å
  • R-Value Free: 0.355 
  • R-Value Work: 0.336 

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The crystal structure of adenylosuccinate lyase from Pyrobaculum aerophilum reveals an intracellular protein with three disulfide bonds.

Toth, E.A.Worby, C.Dixon, J.E.Goedken, E.R.Marqusee, S.Yeates, T.O.

(2000) J Mol Biol 301: 433-450

  • DOI: https://doi.org/10.1006/jmbi.2000.3970
  • Primary Citation of Related Structures:  
    1DOF, 1F1O

  • PubMed Abstract: 

    Adenylosuccinate lyase catalyzes two separate reactions in the de novo purine biosynthetic pathway. Through its dual action in this pathway, adenylosuccinate lyase plays an integral part in cellular replication and metabolism. Mutations in the human enzyme can result in severe neurological disorders, including mental retardation with autistic features. The crystal structure of adenylosuccinate lyase from the hyperthermophilic archaebacterium Pyrobaculum aerophilum has been determined to 2.1 A resolution. Although both the fold of the monomer and the architecture of the tetrameric assembly are similar to adenylosuccinate lyase from the thermophilic eubacterium Thermotoga maritima, the archaebacterial lyase contains unique features. Surprisingly, the structure of adenylosuccinate lyase from P. aerophilum reveals that this intracellular protein contains three disulfide bonds that contribute significantly to its stability against thermal and chemical denaturation. The observation of multiple disulfide bonds in the recombinant form of the enzyme suggests the need for further investigations into whether the intracellular environment of P. aerophilum, and possibly other hyperthermophiles, may be compatible with protein disulfide bond formation. In addition, the protein is shorter in P. aerophilum than it is in other organisms. This abbreviation results from an internal excision of a cluster of helices that may be involved in protein-protein interactions in other organisms and may relate to the observed clinical effects of human mutations in that region.

  • Organizational Affiliation

    Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095-1569, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ADENYLOSUCCINATE LYASE431Bacillus subtilisMutation(s): 0 
Find proteins for P12047 (Bacillus subtilis (strain 168))
Explore P12047 
Go to UniProtKB:  P12047
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP12047
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.25 Å
  • R-Value Free: 0.355 
  • R-Value Work: 0.336 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 129.53α = 90
b = 129.53β = 90
c = 282.08γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-01-10
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-07
    Changes: Data collection, Database references