3TSV

crystal structure of the third PDZ domain of the human ZO-1 MAGUK protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.989 Å
  • R-Value Free: 0.315 
  • R-Value Work: 0.269 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The Src Homology 3 Domain Is Required for Junctional Adhesion Molecule Binding to the Third PDZ Domain of the Scaffolding Protein ZO-1.

Nomme, J.Fanning, A.S.Caffrey, M.Lye, M.F.Anderson, J.M.Lavie, A.

(2011) J.Biol.Chem. 286: 43352-43360

  • DOI: 10.1074/jbc.M111.304089
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Tight junctions are cell-cell contacts that regulate the paracellular flux of solutes and prevent pathogen entry across cell layers. The assembly and permeability of this barrier are dependent on the zonula occludens (ZO) membrane-associated guanylat ...

    Tight junctions are cell-cell contacts that regulate the paracellular flux of solutes and prevent pathogen entry across cell layers. The assembly and permeability of this barrier are dependent on the zonula occludens (ZO) membrane-associated guanylate kinase (MAGUK) proteins ZO-1, -2, and -3. MAGUK proteins are characterized by a core motif of protein-binding domains that include a PDZ domain, a Src homology 3 (SH3) domain, and a region of homology to guanylate kinase (GUK); the structure of this core motif has never been determined for any MAGUK. To better understand how ZO proteins organize the assembly of protein complexes we have crystallized the entire PDZ3-SH3-GUK core motif of ZO-1. We have also crystallized this core motif in complex with the cytoplasmic tail of the ZO-1 PDZ3 ligand, junctional adhesion molecule A (JAM-A) to determine how the activity of different domains is coordinated. Our study shows a new feature for PDZ class II ligand binding that implicates the two highly conserved Phe(-2) and Ser(-3) residues of JAM. Our x-ray structures and NMR experiments also show for the first time a role for adjacent domains in the binding of ligands to PDZ domains in the MAGUK proteins family.


    Organizational Affiliation

    Department of Biochemistry and Molecular Genetics, University of Illinois, Chicago, Illinois 60607, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tight junction protein ZO-1
A
124Homo sapiensMutation(s): 0 
Gene Names: TJP1 (ZO1)
Find proteins for Q07157 (Homo sapiens)
Go to Gene View: TJP1
Go to UniProtKB:  Q07157
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.989 Å
  • R-Value Free: 0.315 
  • R-Value Work: 0.269 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 34.497α = 90.00
b = 45.117β = 90.00
c = 59.634γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
REFMACrefinement
SERGUIdata collection
XDSdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2011-09-13 
  • Released Date: 2011-10-12 
  • Deposition Author(s): Nomme, J., Lavie, A.

Revision History 

  • Version 1.0: 2011-10-12
    Type: Initial release
  • Version 1.1: 2011-11-16
    Type: Database references
  • Version 1.2: 2011-12-28
    Type: Database references