5ELT

Structure of the QUA1-KH domain of T-STAR in complex with UAAU RNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.13 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.207 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural basis of RNA recognition and dimerization by the STAR proteins T-STAR and Sam68.

Feracci, M.Foot, J.N.Grellscheid, S.N.Danilenko, M.Stehle, R.Gonchar, O.Kang, H.S.Dalgliesh, C.Meyer, N.H.Liu, Y.Lahat, A.Sattler, M.Eperon, I.C.Elliott, D.J.Dominguez, C.

(2016) Nat Commun 7: 10355-10355

  • DOI: 10.1038/ncomms10355
  • Primary Citation of Related Structures:  
    5EL3, 5ELT, 5ELS, 5ELR, 5EMO

  • PubMed Abstract: 
  • Sam68 and T-STAR are members of the STAR family of proteins that directly link signal transduction with post-transcriptional gene regulation. Sam68 controls the alternative splicing of many oncogenic proteins. T-STAR is a tissue-specific paralogue that r ...

    Sam68 and T-STAR are members of the STAR family of proteins that directly link signal transduction with post-transcriptional gene regulation. Sam68 controls the alternative splicing of many oncogenic proteins. T-STAR is a tissue-specific paralogue that regulates the alternative splicing of neuronal pre-mRNAs. STAR proteins differ from most splicing factors, in that they contain a single RNA-binding domain. Their specificity of RNA recognition is thought to arise from their property to homodimerize, but how dimerization influences their function remains unknown. Here, we establish at atomic resolution how T-STAR and Sam68 bind to RNA, revealing an unexpected mode of dimerization different from other members of the STAR family. We further demonstrate that this unique dimerization interface is crucial for their biological activity in splicing regulation, and suggest that the increased RNA affinity through dimer formation is a crucial parameter enabling these proteins to select their functional targets within the transcriptome.


    Organizational Affiliation

    Department of Molecular and Cell Biology, University of Leicester, Henry Wellcome Building, Lancaster Road, Leicester LE1 9HN, UK.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
KH domain-containing, RNA-binding, signal transduction-associated protein 3 AB162Homo sapiensMutation(s): 0 
Gene Names: KHDRBS3SALPSLM2
Find proteins for O75525 (Homo sapiens)
Explore O75525 
Go to UniProtKB:  O75525
NIH Common Fund Data Resources
PHAROS:  O75525
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*AP*AP*U)-3')E, F4synthetic construct
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 2.13 Å
    • R-Value Free: 0.256 
    • R-Value Work: 0.204 
    • R-Value Observed: 0.207 
    • Space Group: P 1 21 1
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 54.88α = 90
    b = 46.06β = 96.36
    c = 83.98γ = 90
    Software Package:
    Software NamePurpose
    PHENIXrefinement
    Aimlessdata scaling
    PHASERphasing
    PDB_EXTRACTdata extraction
    XDSdata reduction
    XDSdata scaling

    Structure Validation

    View Full Validation Report



    Entry History & Funding Information

    Deposition Data


    Funding OrganizationLocationGrant Number
    Medical Research Council (United Kingdom)United KingdomG1000526

    Revision History 

    • Version 1.0: 2016-01-13
      Type: Initial release
    • Version 1.1: 2016-01-27
      Changes: Database references
    • Version 1.2: 2017-09-13
      Changes: Author supporting evidence, Data collection