4KRL

Nanobody/VHH domain 7D12 in complex with domain III of the extracellular region of EGFR, pH 6.0

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.215 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history. 


Literature

Structural Evaluation of EGFR Inhibition Mechanisms for Nanobodies/VHH Domains.

Schmitz, K.R., Bagchi, A., Roovers, R.C., van Bergen En Henegouwen, P.M.P., Ferguson, K.M.

(2013) Structure 21: 1214-1224

  • DOI: 10.1016/j.str.2013.05.008
  • Primary Citation of Related Structures:  
    4KRL, 4KRM, 4KRN, 4KRO, 4KRP

  • PubMed Abstract: 

    • The epidermal growth factor receptor (EGFR) is implicated in human cancers and is the target of several classes of therapeutic agents, including antibody-based drugs. Here, we describe X-ray crystal structures of the extracellular region of EGFR in complex with three inhibitory nanobodies, the variable domains of heavy chain only antibodies (VHH) ...

    The epidermal growth factor receptor (EGFR) is implicated in human cancers and is the target of several classes of therapeutic agents, including antibody-based drugs. Here, we describe X-ray crystal structures of the extracellular region of EGFR in complex with three inhibitory nanobodies, the variable domains of heavy chain only antibodies (VHH). VHH domains, the smallest natural antigen-binding modules, are readily engineered for diagnostic and therapeutic applications. All three VHH domains prevent ligand-induced EGFR activation, but use two distinct mechanisms. 7D12 sterically blocks ligand binding to EGFR in a manner similar to that of cetuximab. EgA1 and 9G8 bind an epitope near the EGFR domain II/III junction, preventing receptor conformational changes required for high-affinity ligand binding and dimerization. This epitope is accessible to the convex VHH paratope but inaccessible to the flatter paratope of monoclonal antibodies. Appreciating the modes of binding and inhibition of these VHH domains will aid in developing them for tumor imaging and/or cancer therapy.

    Organizational Affiliation: 

    Department of Physiology and Graduate Group in Biochemistry and Molecular Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Nanobody/VHH domain 7D12A [auth B]133Lama glamaMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Epidermal growth factor receptorB [auth A]214Homo sapiensMutation(s): 0 
Gene Names: EGFR, ERBB, ERBB1, 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
Protein Feature View
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  • Reference Sequence
Oligosaccharides

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Entity ID: 3
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseC2 N-Glycosylation Oligosaccharides Interaction
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG
Download Ideal Coordinates CCD File 
 E [auth A], F [auth A]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N		 Ligand Interaction
MES
Query on MES
Download Ideal Coordinates CCD File 
 D [auth B], H [auth A]2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N		 Ligand Interaction
IOD
Query on IOD
Download Ideal Coordinates CCD File 
 G [auth A]IODIDE ION
I
XMBWDFGMSWQBCA-UHFFFAOYSA-M		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.215 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 148.048α = 90
b = 148.048β = 90
c = 82.51γ = 120
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
JBluIce-EPICSdata collection
HKL-3000data reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-08-28
    Type: Initial release
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Database references, Derived calculations, Structure summary