The crystal structure of Uracil-DNA N-Glycosylase (UNG) from Deinococcus radiodurans.

Experimental Data Snapshot

  • Resolution: 1.80 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.236 

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This is version 1.3 of the entry. See complete history


Structure of the Uracil-DNA N-Glycosylase (Ung) from Deinococcus Radiodurans.

Leiros, I.Moe, E.Smalas, A.O.Mcsweeney, S.

(2005) Acta Crystallogr D Biol Crystallogr 61: 1049

  • DOI: https://doi.org/10.1107/S090744490501382X
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Uracil-DNA glycosylases are DNA-repair enzymes that catalyse the removal of promutagenic uracil from single- and double-stranded DNA, thereby initiating the base-excision repair (BER) pathway. Uracil in DNA can occur by mis-incorporation of dUMP in place of dTMP during DNA synthesis or by deamination of cytosine, resulting in U-A or U-G mispairs. The radiation-resistant bacterium Deinococcus radiodurans has an elevated number of uracil-DNA glycosylases compared with most other organisms. The crystal structure of dr0689 (uracil-DNA N-glycosylase), which has been shown to be the major contributor to the removal of mis-incorporated uracil bases in crude cell extracts of D. radiodurans, is reported.

  • Organizational Affiliation

    The European Synchrotron Radiation Facility, 38043 Grenoble CEDEX 9, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
URACIL-DNA GLYCOSYLASE247Deinococcus radiodurans R1 = ATCC 13939 = DSM 20539Mutation(s): 0 
Find proteins for Q9RWH9 (Deinococcus radiodurans (strain ATCC 13939 / DSM 20539 / JCM 16871 / CCUG 27074 / LMG 4051 / NBRC 15346 / NCIMB 9279 / VKM B-1422 / R1))
Explore Q9RWH9 
Go to UniProtKB:  Q9RWH9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9RWH9
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.80 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.236 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.5α = 90
b = 85.1β = 90
c = 85.9γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-07-27
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2019-04-03
    Changes: Advisory, Data collection, Derived calculations, Experimental preparation, Other
  • Version 1.3: 2023-12-13
    Changes: Data collection, Database references, Other, Refinement description