1KCS

CRYSTAL STRUCTURE OF ANTIBODY PC282 IN COMPLEX WITH PS1 PEPTIDE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.209 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Epitope recognition by diverse antibodies suggests conformational convergence in an antibody response.

Nair, D.T.Singh, K.Siddiqui, Z.Nayak, B.P.Rao, K.V.Salunke, D.M.

(2002) J.Immunol. 168: 2371-2382

  • Primary Citation of Related Structures:  1KC5, 1KCU, 1KCV

  • PubMed Abstract: 
  • Crystal structures of distinct mAbs that recognize a common epitope of a peptide Ag have been determined and analyzed in the unbound and bound forms. These Abs display dissimilar binding site structures in the absence of the Ag. The dissimilarity is ...

    Crystal structures of distinct mAbs that recognize a common epitope of a peptide Ag have been determined and analyzed in the unbound and bound forms. These Abs display dissimilar binding site structures in the absence of the Ag. The dissimilarity is primarily expressed in the conformations of complementarity-determining region H3, which is responsible for defining the epitope specificity. Interestingly, however, the three Abs exhibit similar complementarity-determining region conformations in the Ag binding site while recognizing the common epitope, indicating that different pathways of binding are used for Ag recognition. The epitope also exhibits conformational similarity when bound to each of these Abs, although the peptide Ag was otherwise flexible. The observed conformational convergence in the epitope and the Ag binding site was facilitated by the plasticity in the nature of interactions.


    Related Citations: 
    • Crystal Structure of an Antibody Bound to an Immunodominant Peptide Epitope: Novel Features in Peptide-antibody Recognition
      Nair, D.T.,Singh, K.,Sahu, N.,Rao, K.V.,Salunke, D.M.
      (2000) J.IMMUNOL. 165: 6949


    Organizational Affiliation

    Structural Biology Unit, National Institute of Immunology, New Delhi 110067, India.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PC282 IMMUNOGLOBULIN
L
214Mus musculusN/A
Find proteins for P01837 (Mus musculus)
Go to UniProtKB:  P01837
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PC282 IMMUNOGLOBULIN
H
217Mus musculusN/A
Find proteins for P18532 (Mus musculus)
Go to UniProtKB:  P18532
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
PS1 peptide
P
15Hepatitis B virus genotype A1 subtype adw2Gene Names: S
Find proteins for Q91C35 (Hepatitis B virus genotype A1 subtype adw2)
Go to UniProtKB:  Q91C35
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.209 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 52.601α = 90.00
b = 69.524β = 95.62
c = 59.359γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
MARdata collection
SCALEPACKdata scaling
MARdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-05-11
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance