4FXW

Structure of phosphorylated SF1 complex with U2AF65-UHM domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.29 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.248 

wwPDB Validation 3D Report Full Report


This is version 1.2 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:  4FXX

  • 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 U2AF 65 kDa subunit
A, C
106Homo sapiensGene Names: U2AF2 (U2AF65)
Find proteins for P26368 (Homo sapiens)
Go to Gene View: U2AF2
Go to UniProtKB:  P26368
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Splicing factor 1
B, D
124Homo sapiensGene Names: SF1 (ZFM1, ZNF162)
Find proteins for Q15637 (Homo sapiens)
Go to Gene View: SF1
Go to UniProtKB:  Q15637
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B, C
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
B, D
L-PEPTIDE LINKINGC3 H8 N O6 PSER
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: 2.29 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.248 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 76.800α = 90.00
b = 116.100β = 90.00
c = 130.000γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
SCALEPACKdata scaling
HKL-2000data reduction
DENZOdata reduction
HKL-2000data scaling
SOLVEphasing
PHENIXrefinement
Web-Icedata 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
  • Version 1.2: 2017-11-15
    Type: Refinement description