3SKJ

Structural And Functional Characterization of an Agonistic Anti-Human EphA2 Monoclonal Antibody


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.219 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural and functional characterization of an agonistic anti-human EphA2 monoclonal antibody.

Peng, L.Oganesyan, V.Damschroder, M.M.Wu, H.Dall'Acqua, W.F.

(2011) J Mol Biol 413: 390-405

  • DOI: 10.1016/j.jmb.2011.08.018
  • Primary Citation of Related Structures:  
    3SKJ

  • PubMed Abstract: 
  • We report here the three-dimensional structure of human ephrin type A receptor 2 (EphA2) bound to the Fab (fragment antigen binding) of an agonistic human antibody (1C1; IgG1/κ). The structure of the corresponding complex was solved at a resolution of 2. ...

    We report here the three-dimensional structure of human ephrin type A receptor 2 (EphA2) bound to the Fab (fragment antigen binding) of an agonistic human antibody (1C1; IgG1/κ). The structure of the corresponding complex was solved at a resolution of 2.5 Å using molecular replacement and constitutes the first reported structure of a human ephrin receptor bound to an antibody. We have also defined the corresponding functional epitope using a mutagenesis-based approach. This study revealed discrete structural features that determine the fine specificity of 1C1 to EphA2. Our data also provided a molecular basis for 1C1 mechanism of action. More precisely, we propose that its agonistic, internalizing properties are the result of ligand mimicry by the third heavy-chain complementarity-determining region of 1C1. Because EphA2 is an important contributor to cancer formation and progression, these findings may have implications for designing the next generation of anti-tumor therapies.


    Organizational Affiliation

    Department of Antibody Discovery and Protein Engineering, MedImmune, Gaithersburg, MD 20878, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Antibody, light chain LM214Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Antibody, heavy chain HI231Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Ephrin type-A receptor 2 EF206Homo sapiensMutation(s): 0 
Gene Names: EPHA2ECK
EC: 2.7.10.1
Find proteins for P29317 (Homo sapiens)
Explore P29317 
Go to UniProtKB:  P29317
NIH Common Fund Data Resources
PHAROS:  P29317
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.219 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 78.94α = 90
b = 120.859β = 90
c = 286.238γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
PHASESphasing
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-08-31
    Type: Initial release
  • Version 1.1: 2011-09-07
    Changes: Database references
  • Version 1.2: 2012-08-29
    Changes: Database references
  • Version 1.3: 2017-05-31
    Changes: Structure summary