3TJE

Crystal structure of Fas receptor extracellular domain in complex with Fab E09


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.93 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A series of Fas receptor agonist antibodies that demonstrate an inverse correlation between affinity and potency.

Chodorge, M.Zuger, S.Stirnimann, C.Briand, C.Jermutus, L.Grutter, M.G.Minter, R.R.

(2012) Cell Death Differ 19: 1187-1195

  • DOI: 10.1038/cdd.2011.208
  • Primary Citation of Related Structures:  
    3THM, 3TJE

  • PubMed Abstract: 
  • Receptor agonism remains poorly understood at the molecular and mechanistic level. In this study, we identified a fully human anti-Fas antibody that could efficiently trigger apoptosis and therefore function as a potent agonist. Protein engineering and crystallography were used to mechanistically understand the agonistic activity of the antibody ...

    Receptor agonism remains poorly understood at the molecular and mechanistic level. In this study, we identified a fully human anti-Fas antibody that could efficiently trigger apoptosis and therefore function as a potent agonist. Protein engineering and crystallography were used to mechanistically understand the agonistic activity of the antibody. The crystal structure of the complex was determined at 1.9 Å resolution and provided insights into epitope recognition and comparisons with the natural ligand FasL (Fas ligand). When we affinity-matured the agonist antibody, we observed that, surprisingly, the higher-affinity antibodies demonstrated a significant reduction, rather than an increase, in agonist activity at the Fas receptor. We propose and experimentally demonstrate a model to explain this non-intuitive impact of affinity on agonist antibody signalling and explore the implications for the discovery of therapeutic agonists in general.


    Organizational Affiliation

    MedImmune Ltd., Granta Park, Cambridge, UK.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Fab E09, light chain L216Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Fab E09, heavy chain H245Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Tumor necrosis factor receptor superfamily member 6 F156Homo sapiensMutation(s): 0 
Gene Names: APT1FASFAS1TNFRSF6
Find proteins for P25445 (Homo sapiens)
Explore P25445 
Go to UniProtKB:  P25445
NIH Common Fund Data Resources
PHAROS:  P25445
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.93 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.49α = 90
b = 166.4β = 90
c = 110.72γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-05-09
    Type: Initial release
  • Version 1.1: 2012-06-27
    Changes: Database references
  • Version 1.2: 2017-11-08
    Changes: Refinement description