3EFM

Structure of the alcaligin outer membrane recepteur FauA from Bordetella pertussis

• PDB DOI: https://doi.org/10.2210/pdb3EFM/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Bordetella pertussis
• Expression System: Escherichia coli
• Mutation(s): No 
• Membrane Protein: Yes  OPMPDBTMMemProtMDmpstruc


• Deposited: 2008-09-09 Released: 2009-03-31 
• Deposition Author(s): Brillet, K., Lauber, E., Reimmann, C., Armstrong, S.K., Cobessi, D.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.33 Å
• R-Value Free: 0.258 
• R-Value Work: 0.219 
• R-Value Observed: 0.221 

Starting Model: experimental

Literature

Use of an in-house approach to study the three-dimensional structures of various outer membrane proteins: structure of the alcaligin outer membrane transporter FauA from Bordetella pertussis

Brillet, K., Meksem, A., Lauber, E., Reimmann, C., Cobessi, D.

(2009) Acta Crystallogr D Biol Crystallogr 65: 326-331

• PubMed: 19307713 
• DOI: https://doi.org/10.1107/S0907444909002200
• Primary Citation of Related Structures:  
  3EFM


• PubMed Abstract: 
  

  Bordetella pertussis is the bacterial agent of whooping cough in humans. Under iron-limiting conditions, it produces the siderophore alcaligin. Released to the extracellular environment, alcaligin chelates iron, which is then taken up as a ferric alcaligin complex via the FauA outer membrane transporter. FauA belongs to a family of TonB-dependent outer membrane transporters that function using energy derived from the proton motive force. Using an in-house protocol for membrane-protein expression, purification and crystallization, FauA was crystallized in its apo form together with three other TonB-dependent transporters from different organisms. Here, the protocol used to study FauA is described and its three-dimensional structure determined at 2.3 A resolution is discussed.

---

Organizational Affiliation: 

Institut Gilbert-Laustriat, UMR7175 CNRS/Université Louis Pasteur, Strasbourg I, France.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 78.87 kDa 
• Atom Count: 4,530 
• Modelled Residue Count: 572 
• Deposited Residue Count: 707 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Ferric alcaligin siderophore receptor	A	707	Bordetella pertussis	Mutation(s): 0  Gene Names: fauA, BP2463 Membrane Entity: Yes
UniProt
Find proteins for Q9X6A5 (Bordetella pertussis) Explore Q9X6A5  Go to UniProtKB:  Q9X6A5

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	B [auth A], C [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.33 Å
• R-Value Free: 0.258 
• R-Value Work: 0.219 
• R-Value Observed: 0.221 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 165.893	α = 90
b = 188.847	β = 90
c = 62.437	γ = 90

Software Package:

Software Name	Purpose
MOLREP	phasing
REFMAC	refinement
XDS	data reduction
XDS	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-03-31 
Deposition Author(s): Brillet, K., Lauber, E., Reimmann, C., Armstrong, S.K., Cobessi, D.

Revision History  

• Version 1.0: 2009-03-31
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.2: 2012-06-27
  Changes: Database references
• Version 1.3: 2023-11-01
  Changes: Data collection, Database references, Derived calculations, Refinement description