1I8K

CRYSTAL STRUCTURE OF DSFV MR1 IN COMPLEX WITH THE PEPTIDE ANTIGEN OF THE MUTANT EPIDERMAL GROWTH FACTOR RECEPTOR, EGFRVIII, AT LIQUID NITROGEN TEMPERATURE

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.175 

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This is version 1.2 of the entry. See complete history. 


Literature

Antibody recognition of a conformational epitope in a peptide antigen: Fv-peptide complex of an antibody fragment specific for the mutant EGF receptor, EGFRvIII.

Landry, R.C., Klimowicz, A.C., Lavictoire, S.J., Borisova, S., Kottachchi, D.T., Lorimer, I.A., Evans, S.V.

(2001) J Mol Biol 308: 883-893

  • DOI: 10.1006/jmbi.2001.4628
  • Primary Citation of Related Structures:  
    1I8K, 1I8I

  • PubMed Abstract: 

    • Epitope mapping studies and the determination of the structure to 1.8 A resolution have been carried out for the antigen-binding fragment MR1 in complex with peptide antigen. MR1 is specific for the novel fusion junction of the mutant epidermal growt ...

    Epitope mapping studies and the determination of the structure to 1.8 A resolution have been carried out for the antigen-binding fragment MR1 in complex with peptide antigen. MR1 is specific for the novel fusion junction of the mutant epidermal growth factor receptor EGFRvIII and has been reported to have a high degree of specificity for the mutant EGFRvIII over the wild-type EGF receptor. The structure of the complex shows that the peptide antigen residue side-chains found by epitope mapping studies to be critical for recognition are accommodated in pockets on the surface of the Fv. However, the most distinctive portion of the peptide antigen, the novel fusion glycine residue, makes no contact to the Fv and does not contribute directly to the epitope. The specificity of MR1 lies in the ability of this glycine residue to assume the restricted conformation needed to form a type II' beta-hairpin turn more easily, and demonstrates that a peptide antigen can be used to generate a conformational epitope.

    Organizational Affiliation: 

    Department of Biochemistry Microbiology and Immunology, University of Ottawa, 451 Smyth, Ottawa, K1H 8M5, Canada.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
EPIDERMAL GROWTH FACTOR RECEPTOR ANTIBODY MR1SCFV LIGHT CHAINA107Mus musculusMutation(s): 1 
Find proteins for P01660 (Mus musculus)
Explore P01660 
Go to UniProtKB:  P01660
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
EPIDERMAL GROWTH FACTOR RECEPTOR ANTIBODY MR1SCFV HEAVY CHAINB124Mus musculusMutation(s): 1 
Find proteins for P18529 (Mus musculus)
Explore P18529 
Go to UniProtKB:  P18529
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
EPIDERMAL GROWTH FACTOR RECEPTOR, EGFRVIII PEPTIDE ANTIGENC12N/AMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.175 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 110.5α = 90
b = 44.8β = 90
c = 108.6γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
MERLOTphasing
X-PLORrefinement

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-03-14
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance