1JHL

THREE-DIMENSIONAL STRUCTURE OF A HETEROCLITIC ANTIGEN-ANTIBODY CROSS-REACTION COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Work: 0.214 
  • R-Value Observed: 0.214 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Three-dimensional structure of a heteroclitic antigen-antibody cross-reaction complex.

Chitarra, V.Alzari, P.M.Bentley, G.A.Bhat, T.N.Eisele, J.L.Houdusse, A.Lescar, J.Souchon, H.Poljak, R.J.

(1993) Proc Natl Acad Sci U S A 90: 7711-7715

  • DOI: 10.1073/pnas.90.16.7711
  • Primary Citation of Related Structures:  
    1JHL, 2IHL

  • PubMed Abstract: 
  • Although antibodies are highly specific, cross-reactions are frequently observed. To understand the molecular basis of this phenomenon, we studied the anti-hen egg lysozyme (HEL) monoclonal antibody (mAb) D11.15, which cross-reacts with several avian lysozymes, in some cases with a higher affinity (heteroclitic binding) than for HEL ...

    Although antibodies are highly specific, cross-reactions are frequently observed. To understand the molecular basis of this phenomenon, we studied the anti-hen egg lysozyme (HEL) monoclonal antibody (mAb) D11.15, which cross-reacts with several avian lysozymes, in some cases with a higher affinity (heteroclitic binding) than for HEL. We have determined the crystal structure of the Fv fragment of D11.15 complexed with pheasant egg lysozyme (PHL). In addition, we have determined the structure of PHL, Guinea fowl egg lysozyme, and Japanese quail egg lysozyme. Differences in the affinity of D11.15 for the lysozymes appear to result from sequence substitutions in these antigens at the interface with the antibody. More generally, cross-reactivity is seen to require a stereochemically permissive environment for the variant antigen residues at the antibody-antigen interface.


    Organizational Affiliation

    Unité d'Immunologie Structurale (Centre National de la Recherche Scientifique, Unité de Recherches Associée URA 359), Institut Pasteur, Paris, France.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
IGG1-KAPPA D11.15 FV (LIGHT CHAIN)A [auth L]108Mus musculusMutation(s): 0 
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
IGG1-KAPPA D11.15 FV (HEAVY CHAIN)B [auth H]116Mus musculusMutation(s): 0 
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
PHEASANT EGG WHITE LYSOZYMEC [auth A]129Phasianus colchicusMutation(s): 0 
EC: 3.2.1.17
UniProt
Find proteins for P00702 (Phasianus colchicus colchicus)
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Go to UniProtKB:  P00702
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UniProt GroupP00702
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Work: 0.214 
  • R-Value Observed: 0.214 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 57.8α = 90
b = 57.8β = 90
c = 282.1γ = 120
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-01-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance