5SX4

Crystal Structure of panitumumab in complex with epidermal growth factor receptor domain 3.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.226 

wwPDB Validation   3D Report Full Report



Literature

The Panitumumab EGFR Complex Reveals a Binding Mechanism That Overcomes Cetuximab Induced Resistance.

Sickmier, E.A.Kurzeja, R.J.Michelsen, K.Vazir, M.Yang, E.Tasker, A.S.

(2016) PLoS One 11: e0163366-e0163366

  • DOI: 10.1371/journal.pone.0163366
  • Primary Citation of Related Structures:  
    5SX5, 5SX4

  • PubMed Abstract: 
  • Panitumumab and cetuximab target the epidermal growth factor receptor for the treatment of metastatic colorectal cancer. These therapies provide a significant survival benefit to patients with metastatic colorectal cancer with wild-type RAS. A single poi ...

    Panitumumab and cetuximab target the epidermal growth factor receptor for the treatment of metastatic colorectal cancer. These therapies provide a significant survival benefit to patients with metastatic colorectal cancer with wild-type RAS. A single point mutation in the ectodomain of EGFR (S468R) confers acquired or secondary resistance in cetuximab treated patients, which is not observed in panitumumab-treated patients. Structural and biophysical studies presented here show this mutation directly blocks cetuximab binding to EGFR domain III and describes a unique mechanism by which panitumumab uses a central cavity to accommodate this mutation.


    Organizational Affiliation

    Department of Therapeutic Discovery, Amgen Inc., One Amgen Center Drive, Thousand Oaks, CA 91320, United States of America.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Panitumumab Fab Light Chain IL214Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Panitumumab Fab Heavy Chain HJ221Homo 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
Epidermal growth factor receptor MN201Homo sapiensMutation(s): 0 
Gene Names: EGFRERBBERBB1HER1
EC: 2.7.10.1
Find proteins for P00533 (Homo sapiens)
Explore P00533 
Go to UniProtKB:  P00533
NIH Common Fund Data Resources
PHAROS:  P00533
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.226 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.273α = 90
b = 113.184β = 90
c = 232.443γ = 90
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-10-05
    Type: Initial release