6NF7

Crystal Structure of RT1.Aa-Bu31-10


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.211 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Cross-Reactive Donor-Specific CD8+Tregs Efficiently Prevent Transplant Rejection.

Picarda, E.Bezie, S.Usero, L.Ossart, J.Besnard, M.Halim, H.Echasserieau, K.Usal, C.Rossjohn, J.Bernardeau, K.Gras, S.Guillonneau, C.

(2019) Cell Rep 29: 4245-4255.e6

  • DOI: 10.1016/j.celrep.2019.11.106
  • Primary Citation of Related Structures:  
    6NF7

  • PubMed Abstract: 
  • To reduce the use of non-specific immunosuppressive drugs detrimental to transplant patient health, therapies in development aim to achieve antigen-specific tolerance by promoting antigen-specific regulatory T cells (Tregs). However, identification o ...

    To reduce the use of non-specific immunosuppressive drugs detrimental to transplant patient health, therapies in development aim to achieve antigen-specific tolerance by promoting antigen-specific regulatory T cells (Tregs). However, identification of the natural antigens recognized by Tregs and the contribution of their dominance in transplantation has been challenging. We identify epitopes derived from distinct major histocompatibility complex (MHC) class II molecules, sharing a 7-amino acid consensus sequence positioned in a central mobile section in complex with MHC class I, recognized by cross-reactive CD8 + Tregs, enriched in the graft. Antigen-specific CD8 + Tregs can be induced in vivo with a 16-amino acid-long peptide to trigger transplant tolerance. Peptides derived from human HLA class II molecules, harboring the rat consensus sequence, also activate and expand human CD8 + Tregs, suggesting its potential in human transplantation. Altogether, this work should facilitate the development of therapies with peptide epitopes for transplantation and improve our understanding of CD8 + Treg recognition.


    Organizational Affiliation

    Nantes Université, INSERM, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, 44000 Nantes, France; LabEx IGO "Immunotherapy, Graft, Oncology," Nantes, France. Electronic address: carole.guillonneau@univ-nantes.fr.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RT1A.aADGJM275Rattus norvegicusMutation(s): 0 
Find proteins for P16391 (Rattus norvegicus)
Explore P16391 
Go to UniProtKB:  P16391
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-2-microglobulinBEHKN100Rattus norvegicusMutation(s): 0 
Gene Names: B2m
Find proteins for P07151 (Rattus norvegicus)
Explore P07151 
Go to UniProtKB:  P07151
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Bu31-10 peptideCFILO12Rattus norvegicusMutation(s): 0 
Gene Names: RT1-Bb
Find proteins for P29826 (Rattus norvegicus)
Explore P29826 
Go to UniProtKB:  P29826
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.211 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 64.046α = 90
b = 205.86β = 103.25
c = 100.673γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2018-12-19 
  • Released Date: 2019-12-25 
  • Deposition Author(s): Gras, S.

Revision History 

  • Version 1.0: 2019-12-25
    Type: Initial release
  • Version 1.1: 2020-01-08
    Changes: Database references