Crystal structure of Orotate phosphoribosyltransferase from Streptococcus mutans

Experimental Data Snapshot

  • Resolution: 2.40 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.218 

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Structure of orotate phosphoribosyltransferase from the caries pathogen Streptococcus mutans

Liu, C.P.Xu, R.Gao, Z.Q.Xu, J.H.Hou, H.F.Li, L.Q.She, Z.Li, L.F.Su, X.D.Liu, P.Dong, Y.H.

(2010) Acta Crystallogr Sect F Struct Biol Cryst Commun 66: 498-502

  • DOI: https://doi.org/10.1107/S1744309110009243
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Orotate phosphoribosyltransferase (OPRTase) catalyzes the OMP-forming step in de novo pyrimidine-nucleotide biosynthesis. Here, the crystal structure of OPRTase from the caries pathogen Streptococcus mutans is reported at 2.4 A resolution. S. mutans OPRTase forms a symmetric dimer and each monomer binds two sulfates at the active sites. The structural symmetry of the sulfate-binding sites and the missing loops in this structure are consistent with a symmetric catalysis mechanism.

  • Organizational Affiliation

    Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People's Republic of China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Orotate phosphoribosyltransferase
A, B
243Streptococcus mutansMutation(s): 1 
Gene Names: pyrE
Find proteins for Q8DTV2 (Streptococcus mutans serotype c (strain ATCC 700610 / UA159))
Explore Q8DTV2 
Go to UniProtKB:  Q8DTV2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8DTV2
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.40 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.218 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 73.798α = 90
b = 73.798β = 90
c = 184.779γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-06-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2021-11-10
    Changes: Database references, Derived calculations
  • Version 1.3: 2023-11-01
    Changes: Data collection, Refinement description