1DI0

CRYSTAL STRUCTURE OF LUMAZINE SYNTHASE FROM BRUCELLA ABORTUS

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.180 

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This is version 1.2 of the entry. See complete history. 


Literature

Divergence in macromolecular assembly: X-ray crystallographic structure analysis of lumazine synthase from Brucella abortus.

Braden, B.C., Velikovsky, C.A., Cauerhff, A.A., Polikarpov, I., Goldbaum, F.A.

(2000) J Mol Biol 297: 1031-1036

  • DOI: 10.1006/jmbi.2000.3640
  • Primary Citation of Related Structures:  
    1DI0

  • PubMed Abstract: 

    • We have determined the three-dimensional structure of 6, 7-dimethyl-8-ribityllumazine synthase (lumazine synthase) from Brucella abortus, the infectious organism of the disease brucellosis in animals. This enzyme catalyses the formation of 6, 7-dimethyl-8-ribityllumazine, the penultimate product in the synthesis of riboflavin ...

    We have determined the three-dimensional structure of 6, 7-dimethyl-8-ribityllumazine synthase (lumazine synthase) from Brucella abortus, the infectious organism of the disease brucellosis in animals. This enzyme catalyses the formation of 6, 7-dimethyl-8-ribityllumazine, the penultimate product in the synthesis of riboflavin. The three-dimensional X-ray crystal structure of the enzyme from B. abortus has been solved and refined at 2.7 A resolution to a final R-value of 0.18 (R(free)=0.23). The macromolecular assembly of the enzyme differs from that of the enzyme from Bacillus subtilis, the only other lumazine synthase structure known. While the protein from B. subtilis assembles into a 60 subunit icosahedral capsid built from 12 pentameric units, the enzyme from B. abortus is pentameric in its crystalline form. Nonetheless, the active sites of the two enzymes are virtually identical indicating inhibitors to theses enzymes could be effective pharmaceuticals across a broad species range. Furthermore, we compare the structures of the enzyme from B. subtilis and B. abortus and describe the C teminus structure which accounts for the differences in quaternary structure.

    Related Citations: 
    • Crystallization and Preliminary X-Ray Diffraction Analysis of the Lumazine Synthase from Brucella abortus
      Goldbaum, F.A., Polikarpov, I., Cauerhff, A.A., Velikovsky, C.A., Braden, B.C., Poljak, R.J.
      (1998) J Struct Biol 123: 175
    Organizational Affiliation: 

    Department of Natural Sciences, Bowie State University, Bowie, MD, USA. bbraden@bowiestate.edu



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
LUMAZINE SYNTHASEA, B, C, D, E158Brucella abortusMutation(s): 0 
EC: 2.5.1.78
UniProt
Find proteins for P61711 (Brucella abortus biovar 1 (strain 9-941))
Explore P61711 
Go to UniProtKB:  P61711
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP61711
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.180 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 142.25α = 90
b = 142.25β = 90
c = 242.3γ = 120
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-04-24
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance