1D6E

CRYSTAL STRUCTURE OF HLA-DR4 COMPLEX WITH PEPTIDOMIMETIC AND SEB


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.198 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.6 of the entry. See complete history


Literature

Peptide and peptide mimetic inhibitors of antigen presentation by HLA-DR class II MHC molecules. Design, structure-activity relationships, and X-ray crystal structures.

Bolin, D.R.Swain, A.L.Sarabu, R.Berthel, S.J.Gillespie, P.Huby, N.J.Makofske, R.Orzechowski, L.Perrotta, A.Toth, K.Cooper, J.P.Jiang, N.Falcioni, F.Campbell, R.Cox, D.Gaizband, D.Belunis, C.J.Vidovic, D.Ito, K.Crowther, R.Kammlott, U.Zhang, X.Palermo, R.Weber, D.Guenot, J.Nagy, Z.Olson, G.L.

(2000) J Med Chem 43: 2135-2148

  • DOI: https://doi.org/10.1021/jm000034h
  • Primary Citation of Related Structures:  
    1D5M, 1D5X, 1D5Z, 1D6E

  • PubMed Abstract: 

    Molecular features of ligand binding to MHC class II HLA-DR molecules have been elucidated through a combination of peptide structure-activity studies and structure-based drug design, resulting in analogues with nanomolar affinity in binding assays. Stabilization of lead compounds against cathepsin B cleavage by N-methylation of noncritical backbone NH groups or by dipeptide mimetic substitutions has generated analogues that compete effectively against protein antigens in cellular assays, resulting in inhibition of T-cell proliferation. Crystal structures of four ternary complexes of different peptide mimetics with the rheumatoid arthritis-linked MHC DRB10401 and the bacterial superantigen SEB have been obtained. Peptide-sugar hybrids have also been identified using a structure-based design approach in which the sugar residue replaces a dipeptide. These studies illustrate the complementary roles played by phage display library methods, peptide analogue SAR, peptide mimetics substitutions, and structure-based drug design in the discovery of inhibitors of antigen presentation by MHC class II HLA-DR molecules.


  • Organizational Affiliation

    Roche Research Center, Hoffmann-La Roche Inc., Nutley, New Jersey 07110, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HLA CLASS II HISTOCOMPATIBILITY ANTIGEN181Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P01903 (Homo sapiens)
Explore P01903 
Go to UniProtKB:  P01903
PHAROS:  P01903
GTEx:  ENSG00000204287 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01903
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
HLA CLASS II HISTOCOMPATIBILITY ANTIGEN192Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P01911 (Homo sapiens)
Explore P01911 
Go to UniProtKB:  P01911
PHAROS:  P01911
GTEx:  ENSG00000196126 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01911
Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
ENTEROTOXIN TYPE B239Staphylococcus aureusMutation(s): 0 
UniProt
Find proteins for P01552 (Staphylococcus aureus)
Explore P01552 
Go to UniProtKB:  P01552
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01552
Sequence Annotations
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  • Reference Sequence

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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
PEPTIDOMIMETIC INHIBITOR9N/AMutation(s): 0 
Sequence Annotations
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  • Reference Sequence
Small Molecules
Modified Residues  3 Unique
IDChains TypeFormula2D DiagramParent
ALC
Query on ALC
D
L-PEPTIDE LINKINGC9 H17 N O2ALA
MPQ
Query on MPQ
D
L-PEPTIDE LINKINGC9 H11 N O2GLY
TBG
Query on TBG
D
L-PEPTIDE LINKINGC6 H13 N O2VAL
Biologically Interesting Molecules (External Reference) 1 Unique
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.198 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.827α = 90
b = 102.335β = 90
c = 102.638γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-06-28
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary, Version format compliance
  • Version 1.3: 2012-12-12
    Changes: Other
  • Version 1.4: 2023-05-31
    Changes: Database references, Derived calculations
  • Version 1.5: 2023-09-20
    Changes: Data collection, Refinement description
  • Version 1.6: 2023-11-15
    Changes: Data collection