4FXX

Structure of SF1 coiled-coil domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4801 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.236 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of Phosphorylated SF1 Bound to U2AF(65) in an Essential Splicing Factor Complex.

Wang, W.Maucuer, A.Gupta, A.Manceau, V.Thickman, K.R.Bauer, W.J.Kennedy, S.D.Wedekind, J.E.Green, M.R.Kielkopf, C.L.

(2013) Structure 21: 197-208

  • DOI: 10.1016/j.str.2012.10.020
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The essential splicing factors U2AF⁶⁵ and SF1 cooperatively bind consensus sequences at the 3' end of introns. Phosphorylation of SF1 on a highly conserved "SPSP" motif enhances its interaction with U2AF⁶⁵ and the pre-mRNA. Here, we reveal that phosp ...

    The essential splicing factors U2AF⁶⁵ and SF1 cooperatively bind consensus sequences at the 3' end of introns. Phosphorylation of SF1 on a highly conserved "SPSP" motif enhances its interaction with U2AF⁶⁵ and the pre-mRNA. Here, we reveal that phosphorylation induces essential conformational changes in SF1 and in the SF1/U2AF⁶⁵/3' splice site complex. Crystal structures of the phosphorylated (P)SF1 domain bound to the C-terminal domain of U2AF⁶⁵ at 2.29 Å resolution and of the unphosphorylated SF1 domain at 2.48 Å resolution demonstrate that phosphorylation induces a disorder-to-order transition within a previously unknown SF1/U2AF⁶⁵ interface. We find by small-angle X-ray scattering that the local folding of the SPSP motif transduces into global conformational changes in the nearly full-length (P)SF1/U2AF⁶⁵/3' splice site assembly. We further determine that SPSP phosphorylation and the SF1/U2AF⁶⁵ interface are essential in vivo. These results offer a structural prototype for phosphorylation-dependent control of pre-mRNA splicing factors.


    Organizational Affiliation

    Center for RNA Biology and Department of Biochemistry and Biophysics, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Splicing factor 1
A, B, C, D
112Homo sapiensMutation(s): 0 
Gene Names: SF1 (ZFM1, ZNF162)
Find proteins for Q15637 (Homo sapiens)
Go to Gene View: SF1
Go to UniProtKB:  Q15637
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MLI
Query on MLI

Download SDF File 
Download CCD File 
A, C
MALONATE ION
C3 H2 O4
OFOBLEOULBTSOW-UHFFFAOYSA-L
 Ligand Interaction
IMD
Query on IMD

Download SDF File 
Download CCD File 
A, B, C, D
IMIDAZOLE
C3 H5 N2
RAXXELZNTBOGNW-UHFFFAOYSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4801 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.236 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 96.030α = 90.00
b = 37.970β = 107.38
c = 144.680γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PHENIXphasing
SCALAdata scaling
PDB_EXTRACTdata extraction
MOSFLMdata reduction
webicedata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-01-16
    Type: Initial release
  • Version 1.1: 2013-02-27
    Type: Database references