4MA6

Crystal structure of Ara h 8 with Epicatechin bound


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure and Function of the Peanut Panallergen Ara h 8.

Hurlburt, B.K.Offermann, L.R.McBride, J.K.Majorek, K.A.Maleki, S.J.Chruszcz, M.

(2013) J.Biol.Chem. 288: 36890-36901

  • DOI: 10.1074/jbc.M113.517797
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The incidence of peanut allergy continues to rise in the United States and Europe. Whereas exposure to the major allergens Ara h 1, 2, 3, and 6 can cause fatal anaphylaxis, exposure to the minor allergens usually does not. Ara h 8 is a minor allergen ...

    The incidence of peanut allergy continues to rise in the United States and Europe. Whereas exposure to the major allergens Ara h 1, 2, 3, and 6 can cause fatal anaphylaxis, exposure to the minor allergens usually does not. Ara h 8 is a minor allergen. Importantly, it is the minor food allergens that are thought to be responsible for oral allergy syndrome (OAS), in which sensitization to airborne allergens causes a Type 2 allergic reaction to ingested foods. Furthermore, it is believed that similar protein structure rather than a similar linear sequence is the cause of OAS. Bet v 1 from birch pollen is a common sensitizing agent, and OAS results when patients consume certain fruits, vegetables, tree nuts, and peanuts. Here, we report the three-dimensional structure of Ara h 8, a Bet v 1 homolog. The overall fold is very similar to that of Bet v 1, Api g 1 (celery), Gly m 4 (soy), and Pru av 1 (cherry). Ara h 8 binds the isoflavones quercetin and apigenin as well as resveratrol avidly.


    Organizational Affiliation

    From the Southern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, New Orleans, Louisiana 70124.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ara h 8 allergen
A, B
157Arachis hypogaeaMutation(s): 0 
Find proteins for Q6VT83 (Arachis hypogaea)
Go to UniProtKB:  Q6VT83
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A, B
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
28E
Query on 28E

Download SDF File 
Download CCD File 
A
(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-chromene-3,5,7-triol
Epicatechin
C15 H14 O6
PFTAWBLQPZVEMU-UKRRQHHQSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.192 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 40.647α = 90.00
b = 88.957β = 96.58
c = 42.657γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-3000data collection
HKL-3000phasing
MOLREPphasing
REFMACrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-11-27
    Type: Initial release
  • Version 1.1: 2014-01-15
    Type: Database references