6GD2

Structure of HuR RRM3 in complex with RNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.194 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

HuR biological function involves RRM3-mediated dimerization and RNA binding by all three RRMs.

Pabis, M.Popowicz, G.M.Stehle, R.Fernandez-Ramos, D.Asami, S.Warner, L.Garcia-Maurino, S.M.Schlundt, A.Martinez-Chantar, M.L.Diaz-Moreno, I.Sattler, M.

(2019) Nucleic Acids Res 47: 1011-1029

  • DOI: 10.1093/nar/gky1138
  • Primary Citation of Related Structures:  
    6GD2, 6GD1, 6GD3, 6G2K

  • PubMed Abstract: 
  • HuR/ELAVL1 is an RNA-binding protein involved in differentiation and stress response that acts primarily by stabilizing messenger RNA (mRNA) targets. HuR comprises three RNA recognition motifs (RRMs) where the structure and RNA binding of RRM3 and of full-length HuR remain poorly understood ...

    HuR/ELAVL1 is an RNA-binding protein involved in differentiation and stress response that acts primarily by stabilizing messenger RNA (mRNA) targets. HuR comprises three RNA recognition motifs (RRMs) where the structure and RNA binding of RRM3 and of full-length HuR remain poorly understood. Here, we report crystal structures of RRM3 free and bound to cognate RNAs. Our structural, NMR and biochemical data show that RRM3 mediates canonical RNA interactions and reveal molecular details of a dimerization interface localized on the α-helical face of RRM3. NMR and SAXS analyses indicate that the three RRMs in full-length HuR are flexibly connected in the absence of RNA, while they adopt a more compact arrangement when bound to RNA. Based on these data and crystal structures of tandem RRM1,2-RNA and our RRM3-RNA complexes, we present a structural model of RNA recognition involving all three RRM domains of full-length HuR. Mutational analysis demonstrates that RRM3 dimerization and RNA binding is required for functional activity of full-length HuR in vitro and to regulate target mRNAs levels in human cells, thus providing a fine-tuning for HuR activity in vivo.


    Organizational Affiliation

    Center for Integrated Protein Science Munich at Chair Biomolecular NMR Spectroscopy, Department Chemie, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ELAV-like protein 1A, B, C87Homo 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
    RNA (5'-R(P*UP*UP*UP*AP*UP*UP*U)-3')D15synthetic construct
    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: 0.245 
    • R-Value Work: 0.192 
    • R-Value Observed: 0.194 
    • Space Group: P 1 21 1
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 34.12α = 90
    b = 80.48β = 90.69
    c = 54.44γ = 90
    Software Package:
    Software NamePurpose
    REFMACrefinement
    XDSdata reduction
    XSCALEdata scaling
    PHASERphasing
    MOLREPphasing

    Structure Validation

    View Full Validation Report




    Entry History & Funding Information

    Deposition Data

    • Deposited Date: 2018-04-21 
    • Released Date: 2018-10-31 
    • Deposition Author(s): Pabis, M., Sattler, M.

    Funding OrganizationLocationGrant Number
    German Research FoundationGermanySFB1035

    Revision History  (Full details and data files)

    • Version 1.0: 2018-10-31
      Type: Initial release
    • Version 1.1: 2019-05-15
      Changes: Data collection, Database references