2NUM

Soluble domain of Rieske Iron-Sulfur Protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.167 
  • R-Value Work: 0.152 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Atomic resolution structures of rieske iron-sulfur protein: role of hydrogen bonds in tuning the redox potential of iron-sulfur clusters.

Kolling, D.J.Brunzelle, J.S.Lhee, S.Crofts, A.R.Nair, S.K.

(2007) Structure 15: 29-38

  • DOI: 10.1016/j.str.2006.11.012
  • Primary Citation of Related Structures:  2NUK, 2NVE, 2NVF, 2NVG, 2NWF

  • PubMed Abstract: 
  • The Rieske [2Fe-2S] iron-sulfur protein of cytochrome bc(1) functions as the initial electron acceptor in the rate-limiting step of the catalytic reaction. Prior studies have established roles for a number of conserved residues that hydrogen bond to ...

    The Rieske [2Fe-2S] iron-sulfur protein of cytochrome bc(1) functions as the initial electron acceptor in the rate-limiting step of the catalytic reaction. Prior studies have established roles for a number of conserved residues that hydrogen bond to ligands of the [2Fe-2S] cluster. We have constructed site-specific variants at two of these residues, measured their thermodynamic and functional properties, and determined atomic resolution X-ray crystal structures for the native protein at 1.2 A resolution and for five variants (Ser-154-->Ala, Ser-154-->Thr, Ser-154-->Cys, Tyr-156-->Phe, and Tyr-156-->Trp) to resolutions between 1.5 A and 1.1 A. These structures and complementary biophysical data provide a molecular framework for understanding the role hydrogen bonds to the cluster play in tuning thermodynamic properties, and hence the rate of this bioenergetic reaction. These studies provide a detailed structure-function dissection of the role of hydrogen bonds in tuning the redox potentials of [2Fe-2S] clusters.


    Organizational Affiliation

    Center for Biophysics and Computational Biology, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, IL 61801, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ubiquinol-cytochrome c reductase iron-sulfur subunit
A
141Rhodobacter sphaeroidesGene Names: petA (fbcF)
EC: 1.10.2.2
Find proteins for Q02762 (Rhodobacter sphaeroides)
Go to UniProtKB:  Q02762
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FES
Query on FES

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.167 
  • R-Value Work: 0.152 
  • Space Group: I 4
Unit Cell:
Length (Å)Angle (°)
a = 70.626α = 90.00
b = 70.626β = 90.00
c = 54.777γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
CrystalCleardata collection
HKL-2000data scaling
SnBphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-02-06
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-18
    Type: Refinement description