1O0V

The crystal structure of IgE Fc reveals an asymmetrically bent conformation


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.218 

wwPDB Validation   3D Report Full Report


This is version 2.2 of the entry. See complete history


Literature

The crystal structure of IgE Fc reveals an asymmetrically bent conformation

Wan, T.Beavil, R.L.Fabiane, S.M.Beavil, A.J.Sohi, M.K.Keown, M.Young, R.J.Henry, A.J.Owens, R.J.Gould, H.J.Sutton, B.J.

(2002) Nat Immunol 3: 681-686

  • DOI: https://doi.org/10.1038/ni811
  • Primary Citation of Related Structures:  
    1O0V

  • PubMed Abstract: 

    The distinguishing structural feature of immunoglobulin E (IgE), the antibody responsible for allergic hypersensitivity, is the C epsilon 2 domain pair that replaces the hinge region of IgG. The crystal structure of the IgE Fc (constant fragment) at a 2.6-A resolution has revealed these domains. They display a distinctive, disulfide-linked Ig domain interface and are folded back asymmetrically onto the C epsilon 3 and C epsilon 4 domains, which causes an acute bend in the IgE molecule. The structure implies that a substantial conformational change involving C epsilon 2 must accompany binding to the mast cell receptor Fc epsilon RI. This may be the basis of the exceptionally slow dissociation rate of the IgE-Fc epsilon RI complex and, thus, of the ability of IgE to cause persistent allergic sensitization of mast cells.


  • Organizational Affiliation

    The Randall Centre, King's College London, New Hunt's House, London SE1 1UL, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Immunoglobulin heavy chain epsilon-1
A, B
327Homo sapiensMutation(s): 3 
Gene Names: IgE(ND)
UniProt & NIH Common Fund Data Resources
Find proteins for P01854 (Homo sapiens)
Explore P01854 
Go to UniProtKB:  P01854
PHAROS:  P01854
GTEx:  ENSG00000211891 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01854
Sequence Annotations
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]alpha-D-mannopyranose-(1-6)-[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-glucopyranose
C
7N-Glycosylation
Glycosylation Resources
GlyTouCan:  G55220VL
GlyCosmos:  G55220VL
GlyGen:  G55220VL
Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]alpha-D-mannopyranose-(1-6)-[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-glucopyranose
D
7N-Glycosylation
Glycosylation Resources
GlyTouCan:  G34059IB
GlyCosmos:  G34059IB
GlyGen:  G34059IB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.218 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 129.31α = 90
b = 74.83β = 90
c = 78.65γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALAdata scaling
SOLVEphasing
MLPHAREphasing
FFFEARmodel building
CNSrefinement
CCP4data scaling
FFFEARphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-09-18
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Refinement description
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2021-10-27
    Changes: Database references, Structure summary
  • Version 2.2: 2023-12-27
    Changes: Data collection