3N85

Crystallographic trimer of HER2 extracellular regions in complex with tryptophan-rich antibody fragment


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.207 

wwPDB Validation 3D Report Full Report



Literature

Structure of the complex between HER2 and an antibody paratope formed by side chains from tryptophan and serine.

Fisher, R.D.Ultsch, M.Lingel, A.Schaefer, G.Shao, L.Birtalan, S.Sidhu, S.S.Eigenbrot, C.

(2010) J Mol Biol 402: 217-229

  • DOI: 10.1016/j.jmb.2010.07.027
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Engineered antibody paratopes with limited sequence diversity permit assessment of the roles played by different amino acid side chains in creating the high-affinity, high-specificity interactions characteristic of antibodies. We describe a paratope ...

    Engineered antibody paratopes with limited sequence diversity permit assessment of the roles played by different amino acid side chains in creating the high-affinity, high-specificity interactions characteristic of antibodies. We describe a paratope raised against the human ErbB family member HER2, using a binary diversity tryptophan/serine library displayed on phage. Fab37 binds to the extracellular domain of HER2 with sub-nanomolar affinity. An X-ray structure at 3.2 A resolution reveals a contact paratope composed almost entirely of tryptophan and serine residues. Mutagenesis experiments reveal which of these side chains are more important for direct antigen interactions and which are more important for conformational flexibility. The crystal lattice contains an unprecedented trimeric arrangement of HER2 closely related to previously observed homodimers of the related epidermal growth factor receptor.


    Organizational Affiliation

    Department of Protein Engineering, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Receptor tyrosine-protein kinase erbB-2A624Homo sapiensMutation(s): 0 
Gene Names: ERBB2HER2MLN19NEUNGL
EC: 2.7.10.1
Find proteins for P04626 (Homo sapiens)
Explore P04626 
Go to UniProtKB:  P04626
NIH Common Fund Data Resources
PHAROS  P04626
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Fab37 Light ChainL217Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence

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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Fab37 Heavy ChainH224Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Oligosaccharides
Entity ID: 4
MoleculeChainsChain Length2D Diagram Glycosylation
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
B
4 N-Glycosylation
Entity ID: 5
MoleculeChainsChain Length2D Diagram Glycosylation
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
C
3 N-Glycosylation
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download CCD File 
A, H, L
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CL
Query on CL

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A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.207 
  • Space Group: P 63 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 182.22α = 90
b = 182.22β = 90
c = 330.851γ = 120
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2010-05-27 
  • Released Date: 2010-07-28 
  • Deposition Author(s): Eigenbrot, C.

Revision History 

  • Version 1.0: 2010-07-28
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2014-01-15
    Changes: Refinement description
  • Version 1.3: 2017-11-08
    Changes: Refinement description
  • Version 1.4: 2018-01-24
    Changes: Refinement description
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary