5UM2

Functional and structural characterization of a Sulfate-binding protein (Sbp) from Xanthomonas citri


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.14 Å
  • R-Value Free: 0.139 
  • R-Value Work: 0.121 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Sulfate-Binding Protein (Sbp) from Xanthomonas citri: Structure and Functional Insights.

Pereira, C.T.Roesler, C.Faria, J.N.Fessel, M.R.Balan, A.

(2017) Mol. Plant Microbe Interact. 30: 578-588

  • DOI: 10.1094/MPMI-02-17-0032-R

  • PubMed Abstract: 
  • The uptake and transport of sulfate in bacteria is mediated by an ATP-binding cassette transporter (ABC transporter) encoded by sbpcysUWA genes, whose importance has been widely demonstrated due to their relevance in cysteine synthesis and bacterial ...

    The uptake and transport of sulfate in bacteria is mediated by an ATP-binding cassette transporter (ABC transporter) encoded by sbpcysUWA genes, whose importance has been widely demonstrated due to their relevance in cysteine synthesis and bacterial growth. In Xanthomonas citri, the causative agent of canker disease, the expression of components from this ABC transporter and others related to uptake of organic sulfur sources has been shown during in vitro growth cultures. In this work, based on gene reporter and proteomics analyses, we showed the activation of the promoter that controls the sbpcysUWA operon in vitro and in vivo and the expression of sulfate-binding protein (Sbp), a periplasmic-binding protein, indicating that this protein plays an important function during growth and that the transport system is active during Citrus sinensis infection. To characterize Sbp, we solved its three-dimensional structure bound to sulfate at 1.14 Å resolution and performed biochemical and functional characterization. The results revealed that Sbp interacts with sulfate without structural changes, but the interaction induces a significant increasing of protein thermal stability. Altogether, the results presented in this study show the evidence of the functionality of the ABC transporter for sulfate in X. citri and its relevance during infection.


    Related Citations: 
    • The sulfur/sulfonates transport systems in Xanthomonas citri pv. citri.
      Pereira, C.T.,Moutran, A.,Fessel, M.,Balan, A.
      (2015) BMC Genomics 16: 524


    Organizational Affiliation

    1 Laboratório Nacional de Biociências (LNBio), Centro de Pesquisas em Energia e Materiais (CNPEM), Campinas, São Paulo, Brazil.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ABC transporter sulfate binding protein
A
334Xanthomonas axonopodis pv. citri (strain 306)Mutation(s): 0 
Gene Names: sbp
Find proteins for Q8PNN7 (Xanthomonas axonopodis pv. citri (strain 306))
Go to UniProtKB:  Q8PNN7
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.14 Å
  • R-Value Free: 0.139 
  • R-Value Work: 0.121 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 183.060α = 90.00
b = 54.540β = 98.90
c = 34.200γ = 90.00
Software Package:
Software NamePurpose
PHENIXmodel building
PHENIXrefinement
XDSdata reduction
PHASERphasing
PDB_EXTRACTdata extraction
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Sao Paulo Research FoundationBrazil2013/16094-4
Sao Paulo Research FoundationBrazil2015/14514-1

Revision History 

  • Version 1.0: 2017-03-29
    Type: Initial release
  • Version 1.1: 2017-07-19
    Type: Data collection, Database references
  • Version 1.2: 2019-04-17
    Type: Author supporting evidence, Data collection