1CIC

IDIOTOPE-ANTI-IDIOTOPE FAB-FAB COMPLEX; D1.3-E225


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Work: 0.179 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Three-dimensional structure of an idiotope-anti-idiotope complex.

Bentley, G.A.Boulot, G.Riottot, M.M.Poljak, R.J.

(1990) Nature 348: 254-257

  • DOI: 10.1038/348254a0
  • Primary Citation of Related Structures:  
    1CIC

  • PubMed Abstract: 
  • Serologically detected antigenic determinants unique to an antibody or group of antibodies are called idiotopes. The sum of idiotopes of an antibody constitute its idiotype. Idiotypes have been intensively studied following a hypothesis for the self-regulation of the immune system through a network of idiotype-anti-idiotype interactions ...

    Serologically detected antigenic determinants unique to an antibody or group of antibodies are called idiotopes. The sum of idiotopes of an antibody constitute its idiotype. Idiotypes have been intensively studied following a hypothesis for the self-regulation of the immune system through a network of idiotype-anti-idiotype interactions. Furthermore, as antigen and anti-idiotypes can competitively bind to idiotype-positive, antigen-specific antibodies, anti-idiotypes may carry an 'internal image' of the external antigen. Here we describe the structure of the complex between the monoclonal anti-lysozyme FabD1.3 and the anti-idiotopic FabE225 at 2.5 A resolution. This complex defines a private idiotope consisting of 13 amino-acid residues, mainly from the complementarity-determining regions of D1.3. Seven of these residues make contacts with the antigen, indicating a significant overlap between idiotope and antigen-combining site. Idiotopic mimicry of the external antigen is not achieved at the molecular level in this example.


    Organizational Affiliation

    Unité d'Immunologie Structurale, URA 359 CNRS, Département d'Immunologie, Institut Pasteur, Paris, France.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (IG HEAVY CHAIN V REGIONS)A214Mus musculusMutation(s): 0 
Gene Names: Igkc
UniProt
Find proteins for P01837 (Mus musculus)
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (IG HEAVY CHAIN V REGIONS)B217Mus musculusMutation(s): 0 
Gene Names: Igh-3
UniProt
Find proteins for P01867 (Mus musculus)
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (IG HEAVY CHAIN V REGIONS)C214Mus musculusMutation(s): 0 
Gene Names: Igk
UniProt
Find proteins for I6L958 (Mus musculus)
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (IG HEAVY CHAIN V REGIONS)D218Mus musculusMutation(s): 0 
Gene Names: Ighg1Igh-4
UniProt
Find proteins for P01869 (Mus musculus)
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Work: 0.179 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 75.11α = 90
b = 77.65β = 111.8
c = 96.75γ = 90
Software Package:
Software NamePurpose
ROTAVATAdata reduction
Agrovatadata reduction
AMoREphasing
PROFFTrefinement
CCP4data scaling
ROTAVATAdata scaling

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 1999-03-31 
  • Released Date: 1999-04-19 
  • Deposition Author(s): Bentley, G.A.

Revision History  (Full details and data files)

  • Version 1.0: 1999-04-19
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Refinement description