1JHL | pdb_00001jhl

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

• PDB DOI: https://doi.org/10.2210/pdb1JHL/pdb

• Classification: COMPLEX(ANTIBODY-ANTIGEN)
• Organism(s): Mus musculus, Phasianus colchicus
• Mutation(s): No 


• Deposited: 1993-05-04 Released: 1994-01-31 
• Deposition Author(s): Chitarra, V., Alzari, P.M., Bentley, G.A., Bhat, T.N., Eisele, J.-L., Poljak, R.J.

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Experimental Data Snapshot

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

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

• PubMed: 8356074 
• DOI: https://doi.org/10.1073/pnas.90.16.7711
• Primary Citation 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. 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.

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

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 3-mer - A2B1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 39.12 kDa 
• Atom Count: 2,745 
• Modeled Residue Count: 353 
• Deposited Residue Count: 353 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
IGG1-KAPPA D11.15 FV (LIGHT CHAIN)	A [auth L]	108	Mus musculus	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
IGG1-KAPPA D11.15 FV (HEAVY CHAIN)	B [auth H]	116	Mus musculus	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
PHEASANT EGG WHITE LYSOZYME	C [auth A]	129	Phasianus colchicus	Mutation(s): 0  EC: 3.2.1.17
UniProt
Find proteins for P00702 (Phasianus colchicus colchicus) Explore P00702  Go to UniProtKB:  P00702

Experimental Data & Validation

Experimental Data

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

Space Group: P 6₅

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 57.8	α = 90
b = 57.8	β = 90
c = 282.1	γ = 120

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1994-01-31 
Deposition Author(s): Chitarra, V., Alzari, P.M., Bentley, G.A., Bhat, T.N., Eisele, J.-L., Poljak, R.J.

Revision History  

• 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
• Version 1.3: 2024-06-05
  Changes: Data collection, Database references, Other
• Version 1.4: 2024-10-09
  Changes: Structure summary