3QWQ

Crystal structure of the extracellular domain of the epidermal growth factor receptor in complex with an adnectin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.204 

Starting Models: experimental
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This is version 2.1 of the entry. See complete history


Literature

Structures of adnectin/protein complexes reveal an expanded binding footprint.

Ramamurthy, V.Krystek, S.R.Bush, A.Wei, A.Emanuel, S.L.Das Gupta, R.Janjua, A.Cheng, L.Murdock, M.Abramczyk, B.Cohen, D.Lin, Z.Morin, P.Davis, J.H.Dabritz, M.McLaughlin, D.C.Russo, K.A.Chao, G.Wright, M.C.Jenny, V.A.Engle, L.J.Furfine, E.Sheriff, S.

(2012) Structure 20: 259-269

  • DOI: https://doi.org/10.1016/j.str.2011.11.016
  • Primary Citation of Related Structures:  
    3QWQ, 3QWR

  • PubMed Abstract: 

    Adnectins are targeted biologics derived from the tenth type III domain of human fibronectin (¹⁰Fn3), a member of the immunoglobulin superfamily. Target-specific binders are selected from libraries generated by diversifying the three ¹⁰Fn3 loops that are analogous to the complementarity determining regions of antibodies. The crystal structures of two Adnectins were determined, each in complex with its therapeutic target, EGFR or IL-23. Both Adnectins bind different epitopes than those bound by known monoclonal antibodies. Molecular modeling suggests that some of these epitopes might not be accessible to antibodies because of the size and concave shape of the antibody combining site. In addition to interactions from the Adnectin diversified loops, residues from the N terminus and/or the β strands interact with the target proteins in both complexes. Alanine-scanning mutagenesis confirmed the calculated binding energies of these β strand interactions, indicating that these nonloop residues can expand the available binding footprint.


  • Organizational Affiliation

    Bristol-Myers Squibb Research & Development, Princeton, NJ 08543-4000, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Epidermal growth factor receptor648Homo sapiensMutation(s): 0 
Gene Names: EGFRERBB1
EC: 2.7.10.1
UniProt & NIH Common Fund Data Resources
Find proteins for P00533 (Homo sapiens)
Explore P00533 
Go to UniProtKB:  P00533
PHAROS:  P00533
GTEx:  ENSG00000146648 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00533
Glycosylation
Glycosylation Sites: 6Go to GlyGen: P00533-1
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
ADNECTIN114Homo sapiensMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose
C, F
6N-Glycosylation
Glycosylation Resources
GlyTouCan:  G82348BZ
GlyCosmos:  G82348BZ
GlyGen:  G82348BZ
Entity ID: 4
MoleculeChains Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
D
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE
GlyCosmos:  G15407YE
GlyGen:  G15407YE
Entity ID: 5
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
E
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.204 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68α = 90
b = 72.1β = 90
c = 262γ = 90
Software Package:
Software NamePurpose
BUSTER-TNTrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing
BUSTERrefinement

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

  • Released Date: 2012-02-01 
  • Deposition Author(s): Sheriff, S.

Revision History  (Full details and data files)

  • Version 1.0: 2012-02-01
    Type: Initial release
  • Version 1.1: 2012-02-29
    Changes: Database references
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Database references, Derived calculations, Structure summary
  • Version 2.1: 2023-09-13
    Changes: Data collection, Database references, Refinement description, Structure summary