4EMO

Crystal structure of the PH domain of SHARPIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.212 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural Analysis of SHARPIN, a Subunit of a Large Multi-protein E3 Ubiquitin Ligase, Reveals a Novel Dimerization Function for the Pleckstrin Homology Superfold.

Stieglitz, B.Haire, L.F.Dikic, I.Rittinger, K.

(2012) J Biol Chem 287: 20823-20829

  • DOI: 10.1074/jbc.M112.359547
  • Primary Citation of Related Structures:  
    4EMO

  • PubMed Abstract: 
  • SHARPIN (SHANK-associated RH domain interacting protein) is part of a large multi-protein E3 ubiquitin ligase complex called LUBAC (linear ubiquitin chain assembly complex), which catalyzes the formation of linear ubiquitin chains and regulates immune and apoptopic signaling pathways ...

    SHARPIN (SHANK-associated RH domain interacting protein) is part of a large multi-protein E3 ubiquitin ligase complex called LUBAC (linear ubiquitin chain assembly complex), which catalyzes the formation of linear ubiquitin chains and regulates immune and apoptopic signaling pathways. The C-terminal half of SHARPIN contains ubiquitin-like domain and Npl4-zinc finger domains that mediate the interaction with the LUBAC subunit HOIP and ubiquitin, respectively. In contrast, the N-terminal region does not show any homology with known protein interaction domains but has been suggested to be responsible for self-association of SHARPIN, presumably via a coiled-coil region. We have determined the crystal structure of the N-terminal portion of SHARPIN, which adopts the highly conserved pleckstrin homology superfold that is often used as a scaffold to create protein interaction modules. We show that in SHARPIN, this domain does not appear to be used as a ligand recognition domain because it lacks many of the surface properties that are present in other pleckstrin homology fold-based interaction modules. Instead, it acts as a dimerization module extending the functional applications of this superfold.


    Organizational Affiliation

    Division of Molecular Structure, Medical Research Council National Institute for Medical Research, The Ridgeway, London NW7 1AA, United Kingdom.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SharpinA, B, C, D129Homo sapiensMutation(s): 2 
Gene Names: PSEC0216SHARPINSIPL1
UniProt & NIH Common Fund Data Resources
Find proteins for Q9H0F6 (Homo sapiens)
Explore Q9H0F6 
Go to UniProtKB:  Q9H0F6
PHAROS:  Q9H0F6
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, DL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.212 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.55α = 90
b = 61.55β = 90
c = 222.813γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
RESOLVEphasing
REFMACrefinement
PDB_EXTRACTdata extraction
ADSCdata collection
PHENIXphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-05-02
    Type: Initial release
  • Version 1.1: 2012-05-16
    Changes: Database references
  • Version 1.2: 2012-07-25
    Changes: Database references