1WBP

SRPK1 bound to 9mer docking motif peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.228 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Interplay between Srpk and Clk/Sty Kinases in Phosphorylation of the Splicing Factor Asf/Sf2 is Regulated by a Docking Motif in Asf/Sf2

Ngo, J.C.Chakrabarti, S.Ding, J.-H.Velazquez-Dones, A.Nolen, B.Aubol, B.E.Adams, J.A.Fu, X.-D.Ghosh, G.

(2005) Mol Cell 20: 77

  • DOI: https://doi.org/10.1016/j.molcel.2005.08.025
  • Primary Citation of Related Structures:  
    1WBP

  • PubMed Abstract: 

    The arginine-serine (RS)-rich domain of the SR protein ASF/SF2 is phosphorylated by SR protein kinases (SRPKs) and Clk/Sty kinases. However, the mode of phosphorylation by these kinases and their coordination in the biological regulation of ASF/SF2 is unknown. Here, we report the crystal structure of an active fragment of human SRPK1 bound to a peptide derived from an SR protein. This structure led us to identify a docking motif in ASF/SF2. We find that this docking motif restricts phosphorylation of ASF/SF2 by SRPK1 to the N-terminal part of the RS domain - a property essential for its assembly into nuclear speckles. We further show that Clk/Sty causes release of ASF/SF2 from speckles by phosphorylating the C-terminal part of its RS domain. These results suggest that the docking motif of ASF/SF2 is a key regulatory element for sequential phosphorylation by SRPK1 and Clk/Sty and, thus, is essential for its subcellular localization.


  • Organizational Affiliation

    Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
SERINE/THREONINE-PROTEIN KINASE SPRK1397Homo sapiensMutation(s): 0 
EC: 2.7.1.37 (PDB Primary Data), 2.7.11.1 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q96SB4 (Homo sapiens)
Explore Q96SB4 
Go to UniProtKB:  Q96SB4
PHAROS:  Q96SB4
GTEx:  ENSG00000096063 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96SB4
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
MEMBRANE-ASSOCIATED GUANYLATE KINASE, WW AND PDZ DOMAIN-CONTAINING PROTEIN 19Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q96QZ7 (Homo sapiens)
Explore Q96QZ7 
Go to UniProtKB:  Q96QZ7
PHAROS:  Q96QZ7
GTEx:  ENSG00000151276 
Entity Groups  
UniProt GroupQ96QZ7
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download Ideal Coordinates CCD File 
D [auth A]ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
ACT
Query on ACT

Download Ideal Coordinates CCD File 
C [auth A]ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.228 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 78.68α = 90
b = 78.68β = 90
c = 310.54γ = 120
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-10-19
    Type: Initial release
  • Version 1.1: 2017-02-08
    Changes: Database references, Derived calculations, Other, Refinement description, Source and taxonomy, Structure summary, Version format compliance
  • Version 1.2: 2023-12-13
    Changes: Data collection, Database references, Derived calculations, Refinement description