6GC5

Molecular basis for AU-rich element recognition and dimerization by the HuR C-terminal RRM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Molecular basis for AU-rich element recognition and dimerization by the HuR C-terminal RRM.

Ripin, N.Boudet, J.Duszczyk, M.M.Hinniger, A.Faller, M.Krepl, M.Gadi, A.Schneider, R.J.Sponer, J.Meisner-Kober, N.C.Allain, F.H.

(2019) Proc Natl Acad Sci U S A 116: 2935-2944

  • DOI: 10.1073/pnas.1808696116
  • Primary Citation of Related Structures:  
    6GC5

  • PubMed Abstract: 
  • Human antigen R (HuR) is a key regulator of cellular mRNAs containing adenylate/uridylate-rich elements (AU-rich elements; AREs). These are a major class of cis elements within 3' untranslated regions, targeting these mRNAs for rapid degradation ...

    Human antigen R (HuR) is a key regulator of cellular mRNAs containing adenylate/uridylate-rich elements (AU-rich elements; AREs). These are a major class of cis elements within 3' untranslated regions, targeting these mRNAs for rapid degradation. HuR contains three RNA recognition motifs (RRMs): a tandem RRM1 and 2, followed by a flexible linker and a C-terminal RRM3. While RRM1 and 2 are structurally characterized, little is known about RRM3. Here we present a 1.9-Å-resolution crystal structure of RRM3 bound to different ARE motifs. This structure together with biophysical methods and cell-culture assays revealed the mechanism of RRM3 ARE recognition and dimerization. While multiple RNA motifs can be bound, recognition of the canonical AUUUA pentameric motif is possible by binding to two registers. Additionally, RRM3 forms homodimers to increase its RNA binding affinity. Finally, although HuR stabilizes ARE-containing RNAs, we found that RRM3 counteracts this effect, as shown in a cell-based ARE reporter assay and by qPCR with native HuR mRNA targets containing multiple AUUUA motifs, possibly by competing with RRM12.


    Organizational Affiliation

    Department of Biology, Institute of Molecular Biology and Biophysics, ETH Zürich, 8093 Zürich, Switzerland; nina.ripin@mol.biol.ethz.ch nicole.meisner-kober@sbg.ac.at frederic.allain@mol.biol.ethz.ch.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ELAV-like protein 1A, B, C, D90Homo sapiensMutation(s): 0 
Gene Names: ELAVL1HUR
UniProt & NIH Common Fund Data Resources
Find proteins for Q15717 (Homo sapiens)
Explore Q15717 
Go to UniProtKB:  Q15717
PHAROS:  Q15717
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 2
    MoleculeChainsLengthOrganismImage
    AU-rich RNAE, F, G, H11Homo sapiens
    Protein Feature View
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    • Reference Sequence
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 1.90 Å
    • R-Value Free: 0.231 
    • R-Value Work: 0.201 
    • R-Value Observed: 0.202 
    • Space Group: C 1 2 1
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 151.287α = 90
    b = 40.258β = 132.95
    c = 106.496γ = 90
    Software Package:
    Software NamePurpose
    XDSdata scaling
    XDSdata reduction
    PHASERphasing
    PHENIXrefinement
    Cootmodel building

    Structure Validation

    View Full Validation Report




    Entry History & Funding Information

    Deposition Data


    Funding OrganizationLocationGrant Number
    European UnionSwitzerland289007
    Czech Science FoundationCzech RepublicP305/12/G034

    Revision History  (Full details and data files)

    • Version 1.0: 2019-01-30
      Type: Initial release
    • Version 1.1: 2019-02-13
      Changes: Data collection, Database references
    • Version 1.2: 2019-02-27
      Changes: Data collection, Database references