2VZN

Crystal structure of the major allergen from fire ant venom, Sol i 3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.05 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.201 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal Structure of the Major Allergen from Fire Ant Venom, Sol I 3

Padavattan, S.Schmidt, M.Hoffman, D.R.Markovic-Housley, Z.

(2008) J.Mol.Biol. 383: 178

  • DOI: 10.1016/j.jmb.2008.08.023

  • PubMed Abstract: 
  • Fire ant venom is an extremely potent allergy-inducing agent containing four major allergens, Sol i 1 to Sol i 4, which are the most frequent cause of hypersensitivity reactions to hymenoptera in the southern USA. The crystal structure of recombinant ...

    Fire ant venom is an extremely potent allergy-inducing agent containing four major allergens, Sol i 1 to Sol i 4, which are the most frequent cause of hypersensitivity reactions to hymenoptera in the southern USA. The crystal structure of recombinant (Baculovirus) major fire ant allergen Sol i 3 has been determined to a resolution of 3.1 A by the method of molecular replacement. The secondary-structure elements of Sol i 3 are arranged in an alpha-beta-alpha sandwich fold consisting of a central antiparallel beta-sheet surrounded on both sides by alpha helices. The overall structure is very similar to that of the homologous wasp venom allergen Ves v 5 with major differences occurring in the solvent-exposed loop regions that contain amino acid insertions. Consequently, the limited conservation of surface chemical properties and topology between Sol i 3 and Ves v 5 may explain the observed lack of relevant cross-reactivity. It is concluded that Sol i 3 recognizes immunoglobulin E antibodies with a distinct set of its own epitopes, which are different from those of Ves v 5. Indeed, the molecular area in Sol i 3 covered by non-conserved residues is large enough to accommodate four unique Sol i 3 epitopes.


    Organizational Affiliation

    Department of Structural Biology, Biozentrum, University of Basel, CH-4056 Basel, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
VENOM ALLERGEN 3
A, B
218Solenopsis invictaMutation(s): 0 
Find proteins for P35778 (Solenopsis invicta)
Go to UniProtKB:  P35778
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.05 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.201 
  • Space Group: P 61
Unit Cell:
Length (Å)Angle (°)
a = 93.355α = 90.00
b = 93.355β = 90.00
c = 144.051γ = 120.00
Software Package:
Software NamePurpose
PHASERphasing
MOSFLMdata reduction
REFMACrefinement
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-09-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance