5DH0

Structure of the siderophore periplasmic binding protein from the fuscachelin gene cluster of Thermobifida fusca in P41


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.444 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.171 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure and functional analysis of the siderophore periplasmic binding protein from the fuscachelin gene cluster of Thermobifida fusca.

Li, K.Bruner, S.D.

(2016) Proteins 84: 118-128

  • DOI: 10.1002/prot.24959
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Iron acquisition is a complex, multicomponent process critical for most organisms' survival and virulence. Small iron chelating molecules, siderophores, mediate transport as key components of common pathways for iron assimilation in many microorganis ...

    Iron acquisition is a complex, multicomponent process critical for most organisms' survival and virulence. Small iron chelating molecules, siderophores, mediate transport as key components of common pathways for iron assimilation in many microorganisms. The chemistry and biology of the extraordinary tight and specific metal binding siderophores is of general interest in terms of host/guest chemistry and is a potential target toward the development of therapeutic treatments for microbial virulence. The siderophore pathway of the moderate thermophile, Thermobifida fusca, is an excellent model system to study the process in Gram-positive bacteria. Here we describe the structure and characterization of the siderophore periplasmic binding protein, FscJ from the fuscachelin gene cluster of T. fusca. The structure shows a di-domain arrangement connected with a long α-helix hinge. Several X-ray structures detail ligand-free conformational changes at different pH values, illustrating complex interdomain flexibility of the siderophore receptors. We demonstrated that FscJ has a unique recognition mechanism and details the binding interaction with ferric-fuscachelin A through ITC and docking analysis. The presented work provides a structural basis for the complex molecular mechanisms of siderophore recognition and transportation.


    Organizational Affiliation

    Department of Chemistry, University of Florida, Gainesville, Florida, 32611.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
siderophore periplasmic binding protein
B, A
309Thermobifida fusca (strain YX)Mutation(s): 0 
Find proteins for Q47NS2 (Thermobifida fusca (strain YX))
Go to UniProtKB:  Q47NS2
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.444 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.171 
  • Space Group: P 41
Unit Cell:
Length (Å)Angle (°)
a = 72.983α = 90.00
b = 72.983β = 90.00
c = 135.267γ = 90.00
Software Package:
Software NamePurpose
ARPmodel building
XDSdata reduction
PHENIXrefinement
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2015-08-29 
  • Released Date: 2015-11-18 
  • Deposition Author(s): Li, K., Bruner, S.D.

Funding OrganizationLocationGrant Number
National Science Foundation (United States)United States1411991

Revision History 

  • Version 1.0: 2015-11-18
    Type: Initial release
  • Version 1.1: 2016-01-27
    Type: Database references
  • Version 1.2: 2017-09-20
    Type: Author supporting evidence, Database references, Derived calculations