3U35

Crystal structure of the general stress FMN/FAD binding protein from the phytopathogen Xanthomonas citri


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.201 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The structure of a Xanthomonas general stress protein involved in citrus canker reveals its flavin-binding property.

Hilario, E.Li, Y.Niks, D.Fan, L.

(2012) Acta Crystallogr.,Sect.D 68: 846-853

  • DOI: 10.1107/S0907444912014126
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Xanthomonas citri pv. citri (Xac) causes citrus canker and affects citrus agriculture worldwide. Functional genetic analysis has indicated that a putative general stress protein (XacGSP) encoded by the Xac2369 gene is involved in the bacterial infect ...

    Xanthomonas citri pv. citri (Xac) causes citrus canker and affects citrus agriculture worldwide. Functional genetic analysis has indicated that a putative general stress protein (XacGSP) encoded by the Xac2369 gene is involved in the bacterial infection. In this report, the crystal structure of XacGSP was determined to 2.5 Å resolution. There are four XacGSP molecules in the crystal asymmetric unit. Each XacGSP monomer folds into a six-stranded antiparallel β-barrel flanked by five α-helices. A C-terminal extension protrudes from the sixth β-strand of the β-barrel and pairs with its counterpart from another monomer to form a bridge between the two subunits of an XacGSP dimer. Two XacGSP dimers cross over each other to form a tetramer; the β-barrels from one dimer contact the β-barrels of the other, while the two bridges are distant from each other and do not make contacts. The three-dimensional structure of the XacGSP monomer is very similar to those of pyridoxine 5-phosphate oxidases, a group of enzymes that use flavin mononucleotide (FMN) as a cofactor. Consistent with this, purified XacGSP protein binds to both FMN and flavin adenine dinucleotide (FAD), suggesting that XacGSP may help the bacteria to react against the oxidative stress induced by the defense mechanisms of the plant.


    Organizational Affiliation

    Department of Biochemistry, University of California-Riverside, Riverside, California, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
General stress protein
A, B, C, D
182Xanthomonas axonopodis pv. citri (strain 306)Mutation(s): 0 
Find proteins for Q8PK08 (Xanthomonas axonopodis pv. citri (strain 306))
Go to UniProtKB:  Q8PK08
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PGE
Query on PGE

Download SDF File 
Download CCD File 
A, D
TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.201 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 120.204α = 90.00
b = 122.184β = 90.00
c = 57.713γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling
PHENIXrefinement
Crystaldata collection
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-06-27
    Type: Initial release
  • Version 1.1: 2013-01-23
    Type: Database references
  • Version 1.2: 2017-10-25
    Type: Author supporting evidence