1AIF

ANTI-IDIOTYPIC FAB 409.5.3 (IGG2A) FAB FROM MOUSE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Work: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of an anti-idiotypic Fab against feline peritonitis virus-neutralizing antibody and a comparison with the complexed Fab.

Ban, N.Escobar, C.Hasel, K.W.Day, J.Greenwood, A.McPherson, A.

(1995) FASEB J. 9: 107-114


  • PubMed Abstract: 
  • The crystal structure of anti-idiotopic Fab 409.5.3, made against an E2 specific feline infectious peritonitis virus-neutralizing antibody 730.1.4, has been determined in its free from, at 2.9 A resolution by molecular replacement. This antibody, use ...

    The crystal structure of anti-idiotopic Fab 409.5.3, made against an E2 specific feline infectious peritonitis virus-neutralizing antibody 730.1.4, has been determined in its free from, at 2.9 A resolution by molecular replacement. This antibody, used as an immmunogen, elicits the production of anti-anti-idiotypic antibodies that in turn neutralize the virus. The structure of the uncomplexed Fab was refined using constrained-restrained least squares minimization and simulated annealing in combination with conjugate gradient techniques to a crystallographic R of 0.22 based on 16,482 unique reflections between 20.0 and 2.9 A. The free antiidiotypic Fab shows, when compared to its complexed form, a 5 degrees rotation of its variable light with respect to its variable heavy domain and rearrangement of complementarity determining region loops, which permits optimization of the stereocomplementarity between interacting molecules. This finding supports the induced fit hypothesis for antibody antigen interaction.


    Related Citations: 
    • Characterization of Crystals of an Fab Fragment of a Murine Monoclonal Antibody
      Ban, N.,Escobar, C.,Day, J.,Greenwood, A.,Larson, S.,McPherson, A.
      (1991) J.Mol.Biol. 222: 445
    • Crystal Structure of an Idiotype-Anti-Idiotype Fab Complex
      Ban, N.,Escobar, C.,Garcia, R.,Hasel, K.,Day, J.,Greenwood, A.,McPherson, A.
      (1994) Proc.Natl.Acad.Sci.USA 91: 1604
    • Preliminary Crystallographic Study of a Complex between an Fab of a Monoclonal Feline Peritonitis Virus Neutralizing Antibody and its Anti-Idiotypic Fab
      Ban, N.,Escobar, C.,Day, J.,Greenwood, A.,McPherson, A.
      (1993) J.Mol.Biol. 234: 894


    Organizational Affiliation

    Department of Biochemistry, University of California, Riverside 92521.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ANTI-IDIOTYPIC FAB 409.5.3 (IGG2A) FAB (LIGHT CHAIN)
L, A
215Mus musculusMutation(s): 0 
Gene Names: Igkc
Find proteins for P01837 (Mus musculus)
Go to UniProtKB:  P01837
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ANTI-IDIOTYPIC FAB 409.5.3 (IGG2A) FAB (HEAVY CHAIN)
H, B
218N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Work: 0.220 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 57.200α = 85.30
b = 71.200β = 121.40
c = 75.800γ = 116.50
Software Package:
Software NamePurpose
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-02-01
    Type: Initial release
  • Version 1.1: 2008-03-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance