2OYP

T Cell Immunoglobulin Mucin-3 Crystal Structure Revealed a Galectin-9-independent Binding Surface


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.952 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.156 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

T cell immunoglobulin mucin-3 crystal structure reveals a galectin-9-independent ligand-binding surface

Cao, E.Zang, X.Ramagopal, U.A.Mukhopadhaya, A.Fedorov, A.A.Fedorov, E.V.Zencheck, W.D.Lary, J.W.Cole, J.L.Deng, H.Xiao, H.Dilorenzo, T.P.Allison, J.P.Nathenson, S.G.Almo, S.C.

(2007) Immunity 26: 311-321

  • DOI: 10.1016/j.immuni.2007.01.016

  • PubMed Abstract: 
  • The T cell immunoglobulin mucin (Tim) family of receptors regulates effector CD4(+) T cell functions and is implicated in autoimmune and allergic diseases. Tim-3 induces immunological tolerance, and engagement of the Tim-3 immunoglobulin variable (Ig ...

    The T cell immunoglobulin mucin (Tim) family of receptors regulates effector CD4(+) T cell functions and is implicated in autoimmune and allergic diseases. Tim-3 induces immunological tolerance, and engagement of the Tim-3 immunoglobulin variable (IgV) domain by galectin-9 is important for appropriate termination of T helper 1-immune responses. The 2 A crystal structure of the Tim-3 IgV domain demonstrated that four cysteines, which are invariant within the Tim family, form two noncanonical disulfide bonds, resulting in a surface not present in other immunoglobulin superfamily members. Biochemical and biophysical studies demonstrated that this unique structural feature mediates a previously unidentified galectin-9-independent binding process and suggested that this structural feature is conserved within the entire Tim family. The current work provided a graphic example of the relationship between sequence, structure, and function and suggested that the interplay between multiple Tim-3-binding activities contributes to the regulated assembly of signaling complexes required for effective Th1-mediated immunity.


    Organizational Affiliation

    Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Hepatitis A virus cellular receptor 2
A
109Mus musculusMutation(s): 0 
Gene Names: Havcr2
Find proteins for Q3KP82 (Mus musculus)
Go to UniProtKB:  Q3KP82
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.952 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.156 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 23.000α = 90.00
b = 52.809β = 100.94
c = 38.941γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
MOLREPphasing
CBASSdata collection
HKL-2000data reduction
DENZOdata reduction
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-04-10
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2013-11-13
    Type: Database references
  • Version 1.4: 2017-10-18
    Type: Refinement description