1CIC

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 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

  • 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- ...

    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

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (IG HEAVY CHAIN V REGIONS)
A
214Mus musculusN/A
Find proteins for P01837 (Mus musculus)
Go to UniProtKB:  P01837
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (IG HEAVY CHAIN V REGIONS)
B
217Mus musculusGene Names: Igh-3
Find proteins for P01867 (Mus musculus)
Go to UniProtKB:  P01867
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (IG HEAVY CHAIN V REGIONS)
C
214Mus musculusGene Names: Igk
Find proteins for I6L958 (Mus musculus)
Go to UniProtKB:  I6L958
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (IG HEAVY CHAIN V REGIONS)
D
218Mus musculusGene Names: Ighg1 (Igh-4)
Find proteins for P01869 (Mus musculus)
Go to UniProtKB:  P01869
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Work: 0.179 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 75.110α = 90.00
b = 77.650β = 111.80
c = 96.750γ = 90.00
Software Package:
Software NamePurpose
ROTAVATAdata reduction
CCP4data scaling
Agrovatadata reduction
PROFFTrefinement
ROTAVATAdata scaling
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

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

Revision History 

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