3TF7

42F3 QL9/H2-Ld complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.237 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

T cell receptor signaling is limited by docking geometry to peptide-major histocompatibility complex.

Adams, J.J.Narayanan, S.Liu, B.Birnbaum, M.E.Kruse, A.C.Bowerman, N.A.Chen, W.Levin, A.M.Connolly, J.M.Zhu, C.Kranz, D.M.Garcia, K.C.

(2011) Immunity 35: 681-693

  • DOI: 10.1016/j.immuni.2011.09.013
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • T cell receptor (TCR) engagement of peptide-major histocompatibility complex (pMHC) is essential to adaptive immunity, but it is unknown whether TCR signaling responses are influenced by the binding topology of the TCR-peptide-MHC complex. We develop ...

    T cell receptor (TCR) engagement of peptide-major histocompatibility complex (pMHC) is essential to adaptive immunity, but it is unknown whether TCR signaling responses are influenced by the binding topology of the TCR-peptide-MHC complex. We developed yeast-displayed pMHC libraries that enabled us to identify new peptide sequences reactive with a single TCR. Structural analysis showed that four peptides bound to the TCR with distinct 3D and 2D affinities using entirely different binding chemistries. Three of the peptides that shared a common docking mode, where key TCR-MHC germline interactions are preserved, induced TCR signaling. The fourth peptide failed to induce signaling and was recognized in a substantially different TCR-MHC binding mode that apparently exceeded geometric tolerances compatible with signaling. We suggest that the stereotypical TCR-MHC docking paradigm evolved from productive signaling geometries and that TCR signaling can be modulated by peptides that are recognized in alternative TCR-pMHC binding orientations.


    Organizational Affiliation

    Howard Hughes Medical Institute, and Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA 94305, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
H2-Ld SBM2
E, A
180Mus musculusMutation(s): 0 
Gene Names: H2-L
Find proteins for P01897 (Mus musculus)
Go to UniProtKB:  P01897
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
QL9 peptide (QLSPFPFDL)
F, B
9Mus musculusMutation(s): 0 
Gene Names: Ogdh (Kiaa4192)
EC: 1.2.4.2
Find proteins for Q60597 (Mus musculus)
Go to UniProtKB:  Q60597
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
42F3 Mut7 scFv (42F3 alpha chain, linker, 42F3 beta chain)
C, G, I, K
256N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
C, G
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.237 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 102.487α = 90.00
b = 109.793β = 90.00
c = 213.590γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-2000data reduction
REFMACrefinement
Blu-Icedata collection
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-12-07
    Type: Initial release
  • Version 1.1: 2012-01-18
    Type: Database references