Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 9.81 kDa 
• Atom Count: 796 
• Modelled Residue Count: 81 
• Deposited Residue Count: 82 
• Unique protein chains: 1

2FGO

Structure of the 2[4FE-4S] ferredoxin from Pseudomonas aeruginosa

• DOI: 10.2210/pdb2FGO/pdb

• Classification: ELECTRON TRANSPORT
• Organism(s): Pseudomonas aeruginosa
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2005-12-22 Released: 2006-04-18 
• Deposition Author(s): Giastas, P., Pinotsis, N., Mavridis, I.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.32 Å

Literature

The structure of the 2[4Fe-4S] ferredoxin from Pseudomonas aeruginosa at 1.32-A resolution: comparison with other high-resolution structures of ferredoxins and contributing structural features to reduction potential values.

Giastas, P., Pinotsis, N., Efthymiou, G., Wilmanns, M., Kyritsis, P., Moulis, J.-M., Mavridis, I.M.

(2006) J Biol Inorg Chem 11: 445-458

• PubMed: 16596388 
• DOI: 10.1007/s00775-006-0094-9
• Primary Citation of Related Structures:  
  2FGO


• PubMed Abstract: 
  

The structure of the 2[4Fe-4S] ferredoxin (PaFd) from Pseudomonas aeruginosa, which belongs to the Allochromatium vinosum (Alvin) subfamily, has been determined by X-ray crystallography at 1.32-A resolution, which is the highest up to now for a member of this subfamily of Fds. The main structural features of PaFd are similar to those of AlvinFd. However, the significantly higher resolution of the PaFd structure makes possible a reliable comparison with available high-resolution structures of [4Fe-4S]-containing Fds, in an effort to rationalize the unusual electrochemical properties of Alvin-like Fds. Three major factors contributing to the reduction potential values of [4Fe-4S]2+/+ clusters of Fds, namely, the surface accessibility of the clusters, the N-H...S hydrogen-bonding network, and the volume of the cavities hosting the clusters, are extensively discussed. The volume of the cavities is introduced in the present work for the first time, and can in part explain the very negative potential of cluster I of Alvin-like Fds.

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Organizational Affiliation: 

Institute of Physical Chemistry, NCSR Demokritos, Aghia Paraskevi, 15310, PO Box 60228, Athens, Greece.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Ferredoxin	A	82	Pseudomonas aeruginosa	Mutation(s): 0
UniProt
Find proteins for Q9I6D2 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore Q9I6D2  Go to UniProtKB:  Q9I6D2

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SF4	B [auth A], C [auth A]	IRON/SULFUR CLUSTER Fe4 S4 LJBDFODJNLIPKO-VKOJMFJBAC

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.32 Å
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 39.087	α = 90
b = 45.129	β = 90
c = 51.953	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
SHELXL-97	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-12-22 
• Released Date: 2006-04-18 
Deposition Author(s): Giastas, P., Pinotsis, N., Mavridis, I.M.

Revision History  

• Version 1.0: 2006-04-18
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance