Crystallization, diffraction data collection and preliminary crystallographic analysis of DING protein from Pseudomonas fluorescens

Acta Crystallogr Sect F Struct Biol Cryst Commun. 2007 Jul 1;63(Pt 7):590-2. doi: 10.1107/S1744309107028102. Epub 2007 Jun 15.


PfluDING is a phosphate-binding protein expressed in Pseudomonas fluorescens. This protein is clearly distinct from the bacterial ABC transporter soluble phosphate-binding protein PstS and is more homologous to eukaryotic DING proteins. Interestingly, bacterial DING proteins have only been detected in certain Pseudomonas species. Although DING proteins seem to be ubiquitous in eukaryotes, they are systematically absent from eukaryotic genomic databases and thus are still quite mysterious and poorly characterized. PfluDING displays mitogenic activity towards human cells and binds various ligands such as inorganic phosphate, pyrophosphate, nucleotide triphosphates and cotinine. Here, the crystallization of PfluDING is reported in a monoclinic space group (P2(1)), with typical unit-cell parameters a = 36.7, b = 123.7, c = 40.8 A, alpha = 90, beta = 116.7, gamma = 90 degrees. Preliminary crystallographic analysis reveals good diffraction quality for these crystals and a 1.43 A resolution data set has been collected.

MeSH terms

  • Bacterial Proteins / chemistry*
  • Bacterial Proteins / isolation & purification
  • Crystallization
  • Crystallography, X-Ray
  • Escherichia coli Proteins / chemistry*
  • Escherichia coli Proteins / isolation & purification
  • Pseudomonas fluorescens / chemistry*
  • Recombinant Proteins / chemistry
  • Recombinant Proteins / isolation & purification
  • X-Ray Diffraction


  • Bacterial Proteins
  • Escherichia coli Proteins
  • Recombinant Proteins
  • dinG protein, E coli