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 
  • R-Value Observed: 0.230 

wwPDB Validation   3D Report Full Report


This is version 2.0 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:  
    3B2U, 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 antibody that has similar antitumor potency as the chimeric cetuximab/Erbitux and might represent a safer therapeutic alternative ...

    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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
IMC-11F8 Fab Light chainD, G, J [auth K], A [auth L], M [auth O], P [auth R], S [auth U], V [auth X]213Homo sapiensMutation(s): 0 
Gene Names: EGFR
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
IMC-11F8 Fab Heavy chainE [auth C], H [auth F], B [auth H], K [auth J], N, Q, T, W223Homo sapiensMutation(s): 0 
Gene Names: IGH@
Find proteins for Q6GMX6 (Homo sapiens)
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Go to UniProtKB:  Q6GMX6
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Epidermal growth factor receptorC [auth A], F [auth B], I [auth E], L [auth I], O [auth M], R [auth P], U [auth S], X [auth V]214Homo sapiensMutation(s): 0 
Gene Names: EGFR, ERBB1, ERBB, HER1
EC: 2.7.10.1
Find proteins for P00533 (Homo sapiens)
Explore P00533 
Go to UniProtKB:  P00533
NIH Common Fund Data Resources
PHAROS:  P00533
GTEx:  ENSG00000146648
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  • Reference Sequence
Oligosaccharides

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Entity ID: 4
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseCA [auth c], EA [auth e], Y4 N-Glycosylation Oligosaccharides Interaction
Entity ID: 5
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseBA [auth b], DA [auth d], GA [auth g], LA [auth l], NA [auth n], PA [auth p], Z2 N-Glycosylation Oligosaccharides Interaction
Entity ID: 6
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseAA [auth a], FA [auth f], IA [auth i], JA [auth j], KA [auth k], MA [auth m], OA [auth o]3 N-Glycosylation Oligosaccharides Interaction
Entity ID: 7
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-3)-alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseHA [auth h]5 N-Glycosylation Oligosaccharides Interaction
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG
Download Ideal Coordinates CCD File 
AB [auth I] , CB [auth M] , DB [auth P] , EB [auth P] , GB [auth S] , HB [auth S] , JB [auth V] , KB [auth V] , 
AB [auth I],  CB [auth M],  DB [auth P],  EB [auth P],  GB [auth S],  HB [auth S],  JB [auth V],  KB [auth V],  QA [auth A],  RA [auth A],  TA [auth B],  UA [auth B],  WA [auth E],  XA [auth E]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N		 Ligand Interaction
SO4
Query on SO4
Download Ideal Coordinates CCD File 
 BB [auth O], FB [auth U], IB [auth X], LB [auth V], SA [auth A], VA [auth G], YA [auth E], ZA [auth K]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 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 
  • R-Value Observed: 0.230 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 154.373α = 90
b = 139.122β = 90.02
c = 175.325γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
DMphasing
REFMACrefinement
PDB_EXTRACTdata extraction
ADSCdata collection

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-02-19
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Advisory, Refinement description
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Structure summary