4YYX

Crystal structure of the ZO-1 PDZ1 domain in complex with the 7-mer Claudin2 C-terminal tail

  • Classification: CELL ADHESION
  • Organism(s): Homo sapiens
  • Expression System: Escherichia coli BL21
  • Mutation(s): No 

  • Deposited: 2015-03-24 Released: 2015-04-01 
  • Deposition Author(s): Nomme, J., Lavie, A.
  • Funding Organization(s): National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK), National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.201 

wwPDB Validation   3D Report Full Report


This is version 1.5 of the entry. See complete history. 


Literature

Structural Basis of a Key Factor Regulating the Affinity between the Zonula Occludens First PDZ Domain and Claudins.

Nomme, J., Antanasijevic, A., Caffrey, M., Van Itallie, C.M., Anderson, J.M., Fanning, A.S., Lavie, A.

(2015) J Biol Chem 290: 16595-16606

  • DOI: https://doi.org/10.1074/jbc.M115.646695
  • Primary Citation of Related Structures:  
    4OEO, 4OEP, 4YYX

  • PubMed Abstract: 

    • The molecular seal between epithelial cells, called the tight junction (TJ), is built by several membrane proteins, with claudins playing the most prominent role. The scaffold proteins of the zonula occludens family are required for the correct localization of claudins and hence formation of the TJ ...

    The molecular seal between epithelial cells, called the tight junction (TJ), is built by several membrane proteins, with claudins playing the most prominent role. The scaffold proteins of the zonula occludens family are required for the correct localization of claudins and hence formation of the TJ. The intracellular C terminus of claudins binds to the N-terminal PDZ domain of zonula occludens proteins (PDZ1). Of the 23 identified human claudin proteins, nine possess a tyrosine at the -6 position. Here we show that the claudin affinity for PDZ1 is dependent on the presence or absence of this tyrosine and that the affinity is reduced if the tyrosine is modified by phosphorylation. The PDZ1 β2-β3 loop undergoes a significant conformational change to accommodate this tyrosine. Cell culture experiments support a regulatory role for this tyrosine. Plasticity has been recognized as a critical property of TJs that allow cell remodeling and migration. Our work provides a molecular framework for how TJ plasticity may be regulated.

    Organizational Affiliation: 

    From the Department of Biochemistry and Molecular Genetics, University of Illinois, Chicago, Illinois 60607, lavie@uic.edu.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tight junction protein ZO-1 fused with Claudin-2 C-terminalA, B107Homo sapiensMutation(s): 0 
Gene Names: TJP1, ZO1, CLDN2, PSEC0059, SP82, UNQ705/PRO1356
UniProt & NIH Common Fund Data Resources
Find proteins for P57739 (Homo sapiens)
Explore P57739 
Go to UniProtKB:  P57739
PHAROS:  P57739
Find proteins for Q07157 (Homo sapiens)
Explore Q07157 
Go to UniProtKB:  Q07157
PHAROS:  Q07157
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsP57739Q07157
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FMT
Query on FMT
Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]		FORMIC ACID
C H2 O2
BDAGIHXWWSANSR-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.201 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.351α = 90
b = 72.17β = 90
c = 76.958γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
Cootmodel building
XDSdata scaling
XDSdata reduction
MOLREPphasing

Structure Validation

View Full Validation Report



View more in-depth experimental data
Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)United StatesDK61397
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesAI101676

Revision History  (Full details and data files)

  • Version 1.0: 2015-04-01
    Type: Initial release
  • Version 1.1: 2015-07-01
    Changes: Database references
  • Version 1.2: 2015-07-15
    Changes: Database references
  • Version 1.3: 2017-09-20
    Changes: Author supporting evidence, Database references, Derived calculations, Source and taxonomy
  • Version 1.4: 2017-11-01
    Changes: Author supporting evidence
  • Version 1.5: 2019-12-11
    Changes: Author supporting evidence