4OMB

Phosphate binding protein

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

Literature

The Pseudomonas aeruginosa phosphate transport protein PstS plays a phosphate-independent role in biofilm formation.

Neznansky, A., Blus-Kadosh, I., Yerushalmi, G., Banin, E., Opatowsky, Y.

(2014) Faseb J. 28: 5223-5233

  • DOI: 10.1096/fj.14-258293

  • PubMed Abstract: 

    • Pseudomonas aeruginosa (PA) is a primary cause of nosocomial infections. A key element in PA pathogenicity is its ability to form biofilms that withstand eradication by antibiotics and the immune system. Biofilm formation is controlled by phosphate s ...

    Pseudomonas aeruginosa (PA) is a primary cause of nosocomial infections. A key element in PA pathogenicity is its ability to form biofilms that withstand eradication by antibiotics and the immune system. Biofilm formation is controlled by phosphate signaling and here we provide evidence that PstS, a subunit of the PA Pst phosphate transporter, has a surprising role in this process. Using X-ray crystallography, we characterized the unique underpinnings of PstS phosphate binding and identified an unusual 15-residue N' loop extension. Structure-based experiments showed that PstS-mediated phosphate uptake and biofilm formation are in fact two distinct functions. Specifically, a point mutation that abrogated phosphate binding did not eliminate biofilm formation; conversely, truncation of the N' loop diminished the ability of PA to form biofilms but had no effect on phosphate binding and uptake. This places PstS at a junction that separately controls phosphate sensing and uptake and the ultrastructure organization of bacteria.

    Organizational Affiliation: 

    Mina and Everard Goodman Faculty of Life Sciences and.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Phosphate binding protein
A, B, C, D
347Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)Mutation(s): 0 
Gene Names: pstS
Find proteins for G3XDA8 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Go to UniProtKB:  G3XDA8
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4
Download SDF File 
Download CCD File 
A, B, C, D
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
PT
Query on PT
Download SDF File 
Download CCD File 
A, B, C, D
PLATINUM (II) ION
Pt
HRGDZIGMBDGFTC-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.190 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 35.444α = 90.00
b = 148.092β = 90.00
c = 216.452γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
EDNAdata collection
BALBESphasing
REFMACrefinement
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-12-10
    Type: Initial release
  • Version 1.1: 2014-12-17
    Type: Database references
  • Version 1.2: 2017-11-22
    Type: Refinement description