3UCR

Crystal structure of the immunoreceptor TIGIT IgV domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.63 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.218 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of TIGIT immunoreceptor bound to poliovirus receptor reveals a cell-cell adhesion and signaling mechanism that requires cis-trans receptor clustering.

Stengel, K.F.Harden-Bowles, K.Yu, X.Rouge, L.Yin, J.Comps-Agrar, L.Wiesmann, C.Bazan, J.F.Eaton, D.L.Grogan, J.L.

(2012) Proc Natl Acad Sci U S A 109: 5399-5404

  • DOI: https://doi.org/10.1073/pnas.1120606109
  • Primary Citation of Related Structures:  
    3UCR, 3UDW

  • PubMed Abstract: 

    Nectins (nectin1-4) and Necls [nectin-like (Necl1-5)] are Ig superfamily cell adhesion molecules that regulate cell differentiation and tissue morphogenesis. Adherens junction formation and subsequent cell-cell signaling is initiated by the assembly of higher-order receptor clusters of cognate molecules on juxtaposed cells. However, the structural and mechanistic details of signaling cluster formation remain unclear. Here, we report the crystal structure of poliovirus receptor (PVR)/Nectin-like-5/CD155) in complex with its cognate immunoreceptor ligand T-cell-Ig-and-ITIM-domain (TIGIT). The TIGIT/PVR interface reveals a conserved specific "lock-and-key" interaction. Notably, two TIGIT/PVR dimers assemble into a heterotetramer with a core TIGIT/TIGIT cis-homodimer, each TIGIT molecule binding one PVR molecule. Structure-guided mutations that disrupt the TIGIT/TIGIT interface limit both TIGIT/PVR-mediated cell adhesion and TIGIT-induced PVR phosphorylation in primary dendritic cells. Our data suggest a cis-trans receptor clustering mechanism for cell adhesion and signaling by the TIGIT/PVR complex and provide structural insights into how the PVR family of immunoregulators function.


  • Organizational Affiliation

    Department of Structural Biology, Genentech, Inc., South San Francisco, CA 94080, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
T cell immunoreceptor with Ig and ITIM domains
A, B, C, D
110Homo sapiensMutation(s): 0 
Gene Names: TIGITVSIG9VSTM3
UniProt & NIH Common Fund Data Resources
Find proteins for Q495A1 (Homo sapiens)
Explore Q495A1 
Go to UniProtKB:  Q495A1
PHAROS:  Q495A1
GTEx:  ENSG00000181847 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ495A1
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.63 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.218 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 99.964α = 90
b = 99.964β = 90
c = 117.519γ = 120
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-03-14
    Type: Initial release
  • Version 1.1: 2012-03-28
    Changes: Database references
  • Version 1.2: 2012-04-25
    Changes: Database references