1W2Y

The crystal structure of a complex of Campylobacter jejuni dUTPase with substrate analogue dUpNHp


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.151 
  • R-Value Observed: 0.153 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The Crystal Structure of a Complex of Campylobacter Jejuni Dutpase with Substrate Analogue Sheds Light on the Mechanism and Suggests the "Basic Module" for Dimeric D(C/U)Tpases

Moroz, O.V.Harkiolaki, M.Galperin, M.Y.Vagin, A.A.Gonzalez-Pacanowska, D.Wilson, K.S.

(2004) J Mol Biol 342: 1583

  • DOI: 10.1016/j.jmb.2004.07.050
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The crystal structure of the dUTPase from the important gastric pathogen Campylobacter jejuni has been solved at 1.65 A spacing. This essential bacterial enzyme is the second representative of the new family of dimeric dUTPases to be structurally cha ...

    The crystal structure of the dUTPase from the important gastric pathogen Campylobacter jejuni has been solved at 1.65 A spacing. This essential bacterial enzyme is the second representative of the new family of dimeric dUTPases to be structurally characterised. Members of this family have a novel all-alpha fold and are unrelated to the all-beta dUTPases of the majority of organisms including eukaryotes such as humans, bacteria such as Escherichia coli, archaea like Methanococcus jannaschii and animal viruses. Therefore, dimeric dUTPases can be considered as candidate drug targets. The X-ray structure of the C.jejuni dUTPase in complex with the non-hydrolysable substrate analogue dUpNHp allows us to define the positions of three catalytically significant phosphate-binding magnesium ions and provides a starting point for a detailed understanding of the mechanism of dUTP/dUDP hydrolysis by dimeric dUTPases. Indeed, a water molecule present in the structure is ideally situated to act as the attacking nucleophile during hydrolysis. A comparison of the dUTPases from C.jejuni and Trypanosoma cruzi reveals a common fold with certain distinct features, both in the rigid and mobile domains as defined in the T.cruzi structure. Homologues of the C.jejuni dUTPase have been identified in several other bacteria and bacteriophages, including the dCTPase of phage T4. Sequence comparisons of these proteins define a new superfamily of d(C/U)TPases that includes three distinct enzyme families: (1) dUTPases in trypanosomatides, C.jejuni and several other Gram-negative bacteria, (2) predicted dUTPases in various Gram-positive bacteria and their phages, and (3) dCTP/dUTPases in enterobacterial T4-like phages. All these enzymes share a basic module that consists of two alpha-helices from the rigid domain, two helices from the mobile domain and connecting loops. These results in concert with a number of conserved residues responsible for interdomain cross-talk provide valuable insight towards rational drug design.


    Organizational Affiliation

    Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York YO10 5YW, UK.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DEOXYURIDINE 5'-TRIPHOSPHATE NUCLEOTIDE HYDROLASEA, B229Campylobacter jejuniMutation(s): 0 
EC: 3.6.1.23
Find proteins for Q0P8G4 (Campylobacter jejuni subsp. jejuni serotype O:2 (strain ATCC 700819 / NCTC 11168))
Explore Q0P8G4 
Go to UniProtKB:  Q0P8G4
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DUN
Query on DUN

Download CCD File 
A, B
2'-DEOXYURIDINE 5'-ALPHA,BETA-IMIDO-DIPHOSPHATE
C9 H15 N3 O10 P2
COFNIXBQVWFHTR-SHYZEUOFSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.151 
  • R-Value Observed: 0.153 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 66.963α = 90
b = 70.629β = 90
c = 92.85γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-09-16
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance