3B2U

Crystal structure of isolated domain III of the extracellular region of the epidermal growth factor receptor in complex with the Fab fragment of IMC-11F8


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.58 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.227 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis for EGF receptor inhibition by the therapeutic antibody IMC-11F8.

Li, S.Kussie, P.Ferguson, K.M.

(2008) Structure 16: 216-227

  • DOI: 10.1016/j.str.2007.11.009
  • Primary Citation of Related Structures:  3B2V

  • PubMed Abstract: 
  • Therapeutic anticancer strategies that target and inactivate the epidermal growth factor receptor (EGFR) are under intense study in the clinic. Here we describe the mechanism of EGFR inhibition by an antibody drug IMC-11F8. IMC-11F8 is a fully human ...

    Therapeutic anticancer strategies that target and inactivate the epidermal growth factor receptor (EGFR) are under intense study in the clinic. Here we describe the mechanism of EGFR inhibition by an antibody drug IMC-11F8. IMC-11F8 is a fully human antibody that has similar antitumor potency as the chimeric cetuximab/Erbitux and might represent a safer therapeutic alternative. We report the X-ray crystal structure of the Fab fragment of IMC-11F8 (Fab11F8) in complex with the entire extracellular region and with isolated domain III of EGFR. We compare this to our previous study of the cetuximab/EGFR interaction. Fab11F8 interacts with a remarkably similar epitope, but through a completely different set of interactions. Both the similarities and differences in binding of these two antibodies have important implications for the development of inhibitors that could exploit this same mechanism of EGFR inhibition.


    Organizational Affiliation

    Department of Physiology, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
IMC-11F8 Fab Light chain
L, D, G, K, O, R, U, X
213N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
IMC-11F8 Fab Heavy chain
H, C, F, J, N, Q, T, W
223Homo sapiensGene Names: IGH@
Find proteins for Q6GMX6 (Homo sapiens)
Go to UniProtKB:  Q6GMX6
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Epidermal growth factor receptor
A, B, E, I, M, P, S, V
214Homo sapiensGene Names: EGFR (ERBB, ERBB1, HER1)
EC: 2.7.10.1
Find proteins for P00533 (Homo sapiens)
Go to Gene View: EGFR
Go to UniProtKB:  P00533
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, E, G, K, O, U, V, X
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
MAN
Query on MAN

Download SDF File 
Download CCD File 
A, E, I, M
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
BMA
Query on BMA

Download SDF File 
Download CCD File 
A, B, E, I, M, P, S, V
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B, E, I, M, P, S, V
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.58 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.227 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 154.373α = 90.00
b = 139.122β = 90.02
c = 175.325γ = 90.00
Software Package:
Software NamePurpose
DMphasing
PDB_EXTRACTdata extraction
REFMACrefinement
DENZOdata reduction
PHASERphasing
SCALEPACKdata scaling
ADSCdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-02-19
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Non-polymer description, Version format compliance
  • Version 1.2: 2017-10-25
    Type: Advisory, Refinement description