2W76

Structures of P. aeruginosa FpvA bound to heterologous pyoverdines: FpvA-Pvd(Pa6)-Fe complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.215 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Fpva Bound to Non-Cognate Pyoverdines: Molecular Basis of Siderophore Recognition by an Iron Transporter.

Greenwald, J.Nader, M.Celia, H.Gruffaz, C.Geoffroy, V.Meyer, J.M.Schalk, I.J.Pattus, F.

(2009) Mol.Microbiol. 72: 1246

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The first step in the specific uptake of iron via siderophores in Gram-negative bacteria is the recognition and binding of a ferric siderophore by its cognate receptor. We investigated the molecular basis of this event through structural and biochemi ...

    The first step in the specific uptake of iron via siderophores in Gram-negative bacteria is the recognition and binding of a ferric siderophore by its cognate receptor. We investigated the molecular basis of this event through structural and biochemical approaches. FpvA, the pyoverdine-Fe transporter from Pseudomonas aeruginosa ATCC 15692 (PAO1 strain), is able to transport ferric-pyoverdines originating from other species, whereas most fluorescent pseudomonads are only able to use the one they produce among the more than 100 known different pyoverdines. We solved the structure of FpvA bound to non-cognate pyoverdines of high- or low-affinity and found a close correlation between receptor-ligand structure and the measured affinities. The structure of the first amino acid residues of the pyoverdine chain distinguished the high- and low-affinity binders while the C-terminal portion of the pyoverdines, often cyclic, does not appear to contribute extensively to the interaction between the siderophore and its transporter. The specificity of the ferric-pyoverdine binding site of FpvA is conferred by the structural elements common to all ferric-pyoverdines, i.e. the chromophore, iron, and its chelating groups.


    Organizational Affiliation

    Laboratoire de Biologie Structurale des Membranes, UMR7175, Ecole Supérieure de Biotechnologie de Strasbourg, Bd Sébastien Brant, BP10413, 67412 Illkirch, France. jason.greenwald@phys.chem.ethz.ch




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FERRIPYOVERDINE RECEPTOR
A, B
772Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)Mutation(s): 0 
Gene Names: fpvA
Find proteins for P48632 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Go to UniProtKB:  P48632
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PYOVERDIN R
C
7N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

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Download CCD File 
A, B
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
PVE
Query on PVE

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Download CCD File 
C
(1S)-1-CARBOXY-5-[(3-CARBOXYPROPANOYL)AMINO]-8,9-DIHYDROXY-1,2,3,4-TETRAHYDROPYRIMIDO[1,2-A]QUINOLIN-11-IUM
C17 H18 N3 O7
PKIXPGNFUHEBHN-JTQLQIEISA-O
 Ligand Interaction
FE
Query on FE

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C
FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
 Ligand Interaction
N8E
Query on N8E

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A
3,6,9,12,15-PENTAOXATRICOSAN-1-OL
N-OCTYLPENTAOXYETHYLENE; PENTAETHYLENE GLYCOL MONOOCTYL ETHER; OCTYLPENTAGLYCOL N-OCTYLPENTAOXYETHYLENE
C18 H38 O6
MJELOWOAIAAUJT-UHFFFAOYSA-N
 Ligand Interaction
Biologically Interesting Molecules 1 Unique
IDChainsNameType/Class2D Diagram3D Interactions
PRD_000725
Query on PRD_000725
CPYOVERDIN R Fe ComplexPolypeptide / Metal transport

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.215 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 193.422α = 90.00
b = 129.932β = 130.77
c = 140.877γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-05-12
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Atomic model, Database references, Derived calculations, Non-polymer description, Refinement description, Structure summary, Version format compliance
  • Version 1.2: 2012-11-30
    Type: Other