Crystal structure analysis of iron regulatory protein 1 in complex with ferritin H IRE RNA

Experimental Data Snapshot

  • Resolution: 2.80 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.199 

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Structure of dual function iron regulatory protein 1 complexed with ferritin IRE-RNA.

Walden, W.E.Selezneva, A.I.Dupuy, J.Volbeda, A.Fontecilla-Camps, J.C.Theil, E.C.Volz, K.

(2006) Science 314: 1903-1908

  • DOI: https://doi.org/10.1126/science.1133116
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Iron regulatory protein 1 (IRP1) binds iron-responsive elements (IREs) in messenger RNAs (mRNAs), to repress translation or degradation, or binds an iron-sulfur cluster, to become a cytosolic aconitase enzyme. The 2.8 angstrom resolution crystal structure of the IRP1:ferritin H IRE complex shows an open protein conformation compared with that of cytosolic aconitase. The extended, L-shaped IRP1 molecule embraces the IRE stem-loop through interactions at two sites separated by approximately 30 angstroms, each involving about a dozen protein:RNA bonds. Extensive conformational changes related to binding the IRE or an iron-sulfur cluster explain the alternate functions of IRP1 as an mRNA regulator or enzyme.

  • Organizational Affiliation

    Department of Microbiology and Immunology, University of Illinois at Chicago, Chicago, IL 60612-7344, USA.


Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cytoplasmic aconitate hydratase
A, B
908Oryctolagus cuniculusMutation(s): 2 
Find proteins for Q01059 (Oryctolagus cuniculus)
Explore Q01059 
Go to UniProtKB:  Q01059
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ01059
Sequence Annotations
  • Reference Sequence
Find similar nucleic acids by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains LengthOrganismImage
ferritin H IRE RNA
C, D
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.80 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.199 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 109.555α = 90
b = 80.851β = 92.03
c = 142.873γ = 90
Software Package:
Software NamePurpose
SERGUIdata collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-07-27
    Type: Initial release
  • Version 1.1: 2011-08-03
    Changes: Advisory
  • Version 1.2: 2017-11-08
    Changes: Advisory, Refinement description
  • Version 1.3: 2023-09-13
    Changes: Advisory, Data collection, Database references, Refinement description