4ED5

Crystal structure of the two N-terminal RRM domains of HuR complexed with RNA

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.211 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

The structure of the ARE-binding domains of Hu antigen R (HuR) undergoes conformational changes during RNA binding.

Wang, H., Zeng, F., Liu, Q., Liu, H., Liu, Z., Niu, L., Teng, M., Li, X.

(2013) Acta Crystallogr D Biol Crystallogr 69: 373-380

  • DOI: 10.1107/S0907444912047828
  • Structures With Same Primary Citation

  • PubMed Abstract: 

    • Human RNA-binding protein (HuR), a ubiquitously expressed member of the Hu protein family, plays an important role in mRNA degradation and has been implicated as a key post-transcriptional regulator. HuR contains three RNA-recognition motif (RRM) dom ...

    Human RNA-binding protein (HuR), a ubiquitously expressed member of the Hu protein family, plays an important role in mRNA degradation and has been implicated as a key post-transcriptional regulator. HuR contains three RNA-recognition motif (RRM) domains. The two N-terminal tandem RRM domains can selectively bind AU-rich elements (AREs), while the third RRM domain (RRM3) contributes to interactions with the poly-A tail of target mRNA and other ligands. Here, the X-ray structure of two methylated tandem RRM domains (RRM1/2) of HuR in their RNA-free form was solved at 2.9 Å resolution. The crystal structure of RRM1/2 complexed with target mRNA was also solved at 2.0 Å resolution; comparisons of the two structures show that HuR RRM1/2 undergoes conformational changes upon RNA binding. Fluorescence polarization assays (FPA) were used to study the protein-RNA interactions. Both the structure and the FPA analysis indicated that RRM1 is the primary ARE-binding domain in HuR and that the conformational changes induce subsequent contacts of the RNA substrate with the inter-domain linker and RRM2 which greatly improve the RNA-binding affinity of HuR.

    Organizational Affiliation: 

    School of Life Sciences, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ELAV-like protein 1A, B177Homo sapiensMutation(s): 0 
Gene Names: ELAVL1, HUR
Find proteins for Q15717 (Homo sapiens)
Explore Q15717 
Go to UniProtKB:  Q15717
NIH Common Fund Data Resources
PHAROS  Q15717
GTEx  ENSG00000066044
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by: Sequence   |   Structure
Entity ID: 2
MoleculeChainsLengthOrganism
5'-R(*A*UP*UP*UP*UP*UP*AP*UP*UP*UP*U)-3'C, D11N/A
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
M2M
Query on M2M
Download CCD File 
A
1-METHOXY-2-(2-METHOXYETHOXY)ETHANE
C6 H14 O3
SBZXBUIDTXKZTM-UHFFFAOYSA-N		 Ligand Interaction
GOL
Query on GOL
Download CCD File 
A, D
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
EDO
Query on EDO
Download CCD File 
A
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.211 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 136.77α = 90
b = 62.75β = 111.89
c = 53.29γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
MOLREPphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-05-23
    Type: Initial release
  • Version 1.1: 2013-04-10
    Changes: Database references