Macromolecule Content

• Total Structure Weight: 9292.54 
• Atom Count: 614 
• Residue Count: 29 
• Unique nucleic acid chains: 1

1AQO

IRON RESPONSIVE ELEMENT RNA HAIRPIN, NMR, 15 STRUCTURES

• DOI: 10.2210/pdb1AQO/pdb
• NDB: 1AQO

• Classification: RNA


• Deposited: 1997-07-31 Released: 1998-02-04 
• Deposition Author(s): Addess, K.J., Pardi, A.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 15 
• Conformers Submitted: 15 

Literature

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: 72-83

• PubMed: 9398517 
• DOI: 10.1006/jmbi.1997.1377


• PubMed Abstract: 
  

The iron responsive element (IRE) is a approximately 30 nucleotide RNA hairpin that is located in the 5' untranslated region of all ferritin mRNAs and in the 3' untranslated region of all transferrin receptor mRNAs. The IREs are bound by two related IRE-binding proteins (IRPs) which help control intracellular levels of iron by regulating the expression of both ferritin and transferrin receptor genes. Multi-dimensional NMR and computational approaches were used to study the structure and dynamics of the IRE RNA in solution. The NMR data are consistent with formation of A-form helical stem regions, a one-base internal bulge and a Watson-Crick C.G base-pair between the first and fifth nucleotides in the loop. A superposition of refined structures indicates that the conserved C in the internal bulge, and three residues in the six-nucleotide hairpin loop are quite dynamic in this RNA. The structural roles of the stems, the loop and the bulge in the function of the IRE RNA and in possible interactions with the iron regulatory protein are discussed.

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Organizational Affiliation: 

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

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Length	Organism
IRON RESPONSIVE ELEMENT RNA HAIRPIN	A	29	N/A

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 15 
• Conformers Submitted: 15 

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	phasing
X-PLOR	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-07-31 
• Released Date: 1998-02-04 
• Deposition Author(s): Addess, K.J., Pardi, A.

Revision History 

• Version 1.0: 1998-02-04
  Type: Initial release
• Version 1.1: 2008-03-03
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance