5EL3

Structure of the KH domain of T-STAR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.59 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.176 

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:  

  • 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 th ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
KH domain-containing, RNA-binding, signal transduction-associated protein 3
A, B, C, D
113Homo sapiensMutation(s): 0 
Gene Names: KHDRBS3 (SALP, SLM2)
Find proteins for O75525 (Homo sapiens)
Go to Gene View: KHDRBS3
Go to UniProtKB:  O75525
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.59 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.176 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 57.120α = 90.00
b = 85.920β = 117.23
c = 59.070γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
Aimlessdata scaling
AutoSolphasing
PDB_EXTRACTdata extraction
xia2data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



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
    Type: Database references
  • Version 1.2: 2017-09-13
    Type: Author supporting evidence, Data collection