Crystal structure of the full length ferric pyoverdine outer membrane receptor FpvA of Pseudomonas aeruginosa in its apo form

Experimental Data Snapshot

  • Resolution: 2.77 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 

Starting Model: experimental
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A beta strand lock exchange for signal transduction in TonB-dependent transducers on the basis of a common structural motif.

Brillet, K.Journet, L.Celia, H.Paulus, L.Stahl, A.Pattus, F.Cobessi, D.

(2007) Structure 15: 1383-1391

  • DOI: https://doi.org/10.1016/j.str.2007.08.013
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Transport of molecules larger than 600 Da across the outer membrane involves TonB-dependent receptors and TonB-ExbB-ExbD of the inner membrane. The transport is energy consuming, and involves direct interactions between a short N-terminal sequence of receptor, called the TonB box, and TonB. We solved the structure of the ferric pyoverdine (Pvd-Fe) outer membrane receptor FpvA from Pseudomonas aeruginosa in its apo form. Structure analyses show that residues of the TonB box are in a beta strand which interacts through a mixed four-stranded beta sheet with the periplasmic signaling domain involved in interactions with an inner membrane sigma regulator. In this conformation, the TonB box cannot form a four-stranded beta sheet with TonB. The FhuA-TonB or BtuB-TonB structures show that the TonB-FpvA interactions require a conformational change which involves a beta strand lock-exchange mechanism. This mechanism is compatible with movements of the periplasmic domain deduced from crystallographic analyses of FpvA, FpvA-Pvd, and FpvA-Pvd-Fe.

  • Organizational Affiliation

    Institut Gilbert-Laustriat, UMR7175 CNRS/Université Louis Pasteur, Strasbourg I, Département Récepteurs et Protéines Membranaires, Ecole Supérieure de Biotechnologie de Strasbourg, BP 10413, F-67412 Illkirch, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Ferripyoverdine receptor
A, B
772Pseudomonas aeruginosaMutation(s): 0 
Gene Names: fpvA
Membrane Entity: Yes 
Find proteins for P48632 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore P48632 
Go to UniProtKB:  P48632
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP48632
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on N8E

Download Ideal Coordinates CCD File 
I [auth A]3,6,9,12,15-PENTAOXATRICOSAN-1-OL
C18 H38 O6
Query on PO4

Download Ideal Coordinates CCD File 
C [auth A]
D [auth A]
E [auth A]
F [auth A]
G [auth A]
C [auth A],
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A],
J [auth B],
K [auth B],
L [auth B],
M [auth B]
O4 P
Experimental Data & Validation

Experimental Data

  • Resolution: 2.77 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 189.88α = 90
b = 128.78β = 130.55
c = 139.15γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
XDSdata reduction
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

  • Released Date: 2007-10-30 
  • Deposition Author(s): Cobessi, D.

Revision History  (Full details and data files)

  • Version 1.0: 2007-10-30
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2023-08-30
    Changes: Data collection, Database references, Derived calculations, Refinement description