1X8S

Structure of the Par-6 PDZ domain with a Pals1 internal ligand


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.503 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.216 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Internal recognition through PDZ domain plasticity in the Par-6-Pals1 complex.

Penkert, R.R.Divittorio, H.M.Prehoda, K.E.

(2004) Nat.Struct.Mol.Biol. 11: 1122-1127

  • DOI: 10.1038/nsmb839

  • PubMed Abstract: 
  • PDZ protein interaction domains are typically selective for C-terminal ligands, but non-C-terminal, 'internal' ligands have also been identified. The PDZ domain from the cell polarity protein Par-6 binds C-terminal ligands and an internal sequence fr ...

    PDZ protein interaction domains are typically selective for C-terminal ligands, but non-C-terminal, 'internal' ligands have also been identified. The PDZ domain from the cell polarity protein Par-6 binds C-terminal ligands and an internal sequence from the protein Pals1/Stardust. The structure of the Pals1-Par-6 PDZ complex reveals that the PDZ ligand-binding site is deformed to allow for internal binding. Whereas binding of the Rho GTPase Cdc42 to a CRIB domain adjacent to the Par-6 PDZ regulates binding of C-terminal ligands, the conformational change that occurs upon binding of Pals1 renders its binding independent of Cdc42. These results suggest a mechanism by which the requirement for a C terminus can be readily bypassed by PDZ ligands and reveal a complex set of cooperative and competitive interactions in Par-6 that are likely to be important for cell polarity regulation.


    Organizational Affiliation

    Institute of Molecular Biology and Department of Chemistry, University of Oregon, Eugene, Oregon 97403, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CG5884-PA
A
102Drosophila melanogasterMutation(s): 0 
Gene Names: par-6 (Dm-Par-6, Dm-Par6, Dmel\CG5884, DmPAR-6, DmPar-6, dmPar-6, DmPar6, Dmpar6, DPar-6, dPAR-6, dPar-6, DPar6, Par, par, PAR-6, Par-6, PAR6, Par6, par6)
Find proteins for O97111 (Drosophila melanogaster)
Go to UniProtKB:  O97111
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Pals1 peptide
B
12N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.503 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.216 
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 63.122α = 90.00
b = 63.122β = 90.00
c = 99.276γ = 120.00
Software Package:
Software NamePurpose
AMoREphasing
REFMACrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-12-07
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Version format compliance