1NBR

Iron Responsive Element RNA Hairpin, NMR, 15 Structures


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Refined Solution Structure of the Iron-responsive Element RNA Using Residual Dipolar Couplings

McCallum, S.A.Pardi, A.

(2003) J.Mol.Biol. 326: 1037-1050


  • PubMed Abstract: 
  • The iron-responsive element (IRE) is a 30nt RNA motif located in the non-coding regions of mRNAs of proteins involved in iron regulation. In humans, the IRE plays a direct role in the control of iron levels by post-transcriptional regulation of the f ...

    The iron-responsive element (IRE) is a 30nt RNA motif located in the non-coding regions of mRNAs of proteins involved in iron regulation. In humans, the IRE plays a direct role in the control of iron levels by post-transcriptional regulation of the ferritin and transferrin receptor proteins through highly specific recognition by IRE-binding proteins. The IRE fold is representative of many RNA motifs that contain helical domains separated by a bulge or internal loop. The global structures of such extended multi-domain RNAs are not well defined by conventional NMR-distance and torsion angle structural restraints. Residual dipolar couplings (RDCs) are employed here to better define the global structure of the IRE RNA in solution. RDCs contain valuable long-range structural information that compliments the short-range structural data derived from standard NOE-distance and torsion angle restraints. Several approaches for estimating alignment tensor parameters and incorporating RDCs into RNA structure determinations are compared. Both the local and global structure of the IRE are improved significantly by refinement with RDCs. These RDC refinements provide insight on the conformational dynamics of the IRE. These studies highlight some issues that need to be addressed when incorporating RDCs in solution structure determinations of nucleic acids. The approach used here should prove valuable for structure determinations of various multi-domain systems.


    Related Citations: 
    • Structure and Dynamics of the Iron Responsive Element RNA: Implications for Binding of the RNA by Iron Regulatory Binding Proteins
      Addess, K.J.,Basilion, J.P.,Klausner, R.D.,Rouault, T.A.,Pardi, A.
      (1997) J.Mol.Biol. 274: 72


    Organizational Affiliation

    Department of Chemistry and Biochemistry, 215 UCB, University of Colorado, Boulder, CO 80309-0215, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
RNA HAIRPINA29N/A
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-03-04
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance