1L5P

Crystal Structure of Trichomonas vaginalis Ferredoxin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.315 
  • R-Value Work: 0.248 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The crystal structure of Trichomonas vaginalis ferredoxin provides insight into metronidazole activation.

Crossnoe, C.R.Germanas, J.P.LeMagueres, P.Mustata, G.Krause, K.L.

(2002) J.Mol.Biol. 318: 503-518

  • DOI: 10.1016/S0022-2836(02)00051-7

  • PubMed Abstract: 
  • Crystallographic studies revealing the three-dimensional structure of the oxidized form of the [2Fe-2S] ferredoxin from Trichomonas vaginalis (TvFd) are presented. TvFd, a member of the hydrogenosomal class of ferredoxins, possesses a unique combinat ...

    Crystallographic studies revealing the three-dimensional structure of the oxidized form of the [2Fe-2S] ferredoxin from Trichomonas vaginalis (TvFd) are presented. TvFd, a member of the hydrogenosomal class of ferredoxins, possesses a unique combination of redox and spectroscopic properties, and is believed to be the biological molecule that activates the drug metronidazole reductively in the treatment of trichomoniasis. It is the first hydrogenosomal ferredoxin to have its structure determined. The structure of TvFd reveals a monomeric, 93 residue protein with a fold similar to that of other known [2Fe-2S] ferredoxins. It contains nine hydrogen bonds to the sulfur atoms of the cluster, which is more than the number predicted on the basis of the spectroscopic data. The TvFd structure contains a large dipole moment like adrenodoxin, and appears to have a similar interaction domain. Our analysis demonstrates that TvFd has a unique cavity near the iron-sulfur cluster that exposes one of the inorganic sulfur atoms of the cluster to solvent. This cavity is not seen in any other [2Fe-2S] ferredoxin with known structure, and is hypothesized to be responsible for the high rate of metronidazole reduction by TvFd.


    Organizational Affiliation

    Structural and Computational Biology and Molecular Biophysics Program, Baylor College of Medicine, Houston, TX 77030, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ferredoxin
A, B, C
93Trichomonas vaginalisN/A
Find proteins for P21149 (Trichomonas vaginalis)
Go to UniProtKB:  P21149
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FES
Query on FES

Download SDF File 
Download CCD File 
A, B, C
FE2/S2 (INORGANIC) CLUSTER
Fe2 S2
NIXDOXVAJZFRNF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.315 
  • R-Value Work: 0.248 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 35.400α = 90.00
b = 64.550β = 90.00
c = 133.880γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
DENZOdata reduction
SOLVEphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-08-21
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance