3PNI

Crystal structure of D14C [3Fe-4S] Pyrococcus furiosus ferredoxin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.318 
  • R-Value Work: 0.279 
  • R-Value Observed: 0.281 

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This is version 1.2 of the entry. See complete history


Literature

Crystal structures of the all cysteinyl coordinated D14C variant of Pyrococcus furiosus ferredoxin: [4Fe-4S] <-> [3Fe-4S] cluster conversion

Lovgreen, M.N.Martic, M.Windahl, M.S.Christensen, H.E.Harris, P.

(2011) J Biol Inorg Chem 16: 763-775

  • DOI: 10.1007/s00775-011-0778-7
  • Primary Citation of Related Structures:  
    3PNI

  • PubMed Abstract: 
  • The structure of the all-cysteinyl-coordinated D14C variant of [4Fe-4S] ferredoxin from the hyperthermophilic archaeon Pyrococcus furiosus has been determined to 1.7 Å resolution from a crystal belonging to space group C222(1) with two types of molecules, A and B, in the asymmetric unit ...

    The structure of the all-cysteinyl-coordinated D14C variant of [4Fe-4S] ferredoxin from the hyperthermophilic archaeon Pyrococcus furiosus has been determined to 1.7 Å resolution from a crystal belonging to space group C222(1) with two types of molecules, A and B, in the asymmetric unit. A and B molecules have different crystal packing and intramolecular disulfide bond conformation. The crystal packing reveals a β-sheet interaction between A molecules in adjacent asymmetric units, whereas B molecules are packed as monomers in a less rigid position next to the A-A extended β-sheet dimers. The A molecules contain an intramolecular disulfide bond in a double conformation with 60% occupancy left-handed and 40% occupancy right-handed spiral conformation, whereas B molecules have an intramolecular disulfide bond in a right-handed spiral conformation. The cluster in D14C [4Fe-4S] P. furiosus ferredoxin was chemically oxidized at pH 5.8 to [3Fe-4S]. For purification at pH 8.0, two forms of the protein are obtained. Mass spectrometric analysis shows that the two forms are the D14C [3Fe-4S] P. furiosus ferredoxin monomer and a disulfide-bonded dimer of D14C [3Fe-4S] P. furiosus ferredoxin. When oxidization and purification are carried out at pH 5.8, only the monomer is obtained. The crystal structure of D14C [3Fe-4S] P. furiosus ferredoxin monomer was determined to 2.8 Å resolution from a crystal belonging to space group P2(1)2(1)2(1) with two molecules in the asymmetric unit. The molecules resemble molecule A of D14C [4Fe-4S] P. furiosus ferredoxin and electron density clearly shows the presence of a [3Fe-4S] cluster.


    Organizational Affiliation

    Department of Chemistry, Technical University of Denmark.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
FerredoxinA, B66Pyrococcus furiosusMutation(s): 1 
Gene Names: fdxAPF1909
UniProt
Find proteins for P29603 (Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1))
Explore P29603 
Go to UniProtKB:  P29603
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP29603
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.318 
  • R-Value Work: 0.279 
  • R-Value Observed: 0.281 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.4α = 90
b = 49.8β = 90
c = 51.23γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
MOLREPphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-04-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2013-06-19
    Changes: Database references