6STB

Crystal structure of the strawberry pathogenesis-related 10 (PR-10) Fra a 1.02 protein, Q64W mutant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.27 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.205 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural Bases for the Allergenicity of Fra a 1.02 in Strawberry Fruits.

Orozco-Navarrete, B.Kaczmarska, Z.Dupeux, F.Garrido-Arandia, M.Pott, D.Perales, A.D.Casanal, A.Marquez, J.A.Valpuesta, V.Merchante, C.

(2020) J Agric Food Chem 68: 10951-10961

  • DOI: 10.1021/acs.jafc.9b05714
  • Primary Citation of Related Structures:  
    6ST8, 6ST9, 6STA, 6STB

  • PubMed Abstract: 
  • Although strawberries are highly appreciated fruits, their intake can induce allergic reactions in atopic patients. These reactions can be due to the patient's previous sensitization to the major birch pollen allergen Bet v 1, by which IgE generated in response to Bet v 1 cross-reacts with the structurally related strawberry Fra a 1 protein family ...

    Although strawberries are highly appreciated fruits, their intake can induce allergic reactions in atopic patients. These reactions can be due to the patient's previous sensitization to the major birch pollen allergen Bet v 1, by which IgE generated in response to Bet v 1 cross-reacts with the structurally related strawberry Fra a 1 protein family. Fra a 1.02 is the most expressed paralog in ripe strawberries and is highly allergenic. To better understand the molecular mechanisms regulating this allergic response, we have determined the three-dimensional structure of Fra a 1.02 and four site-directed mutants that were designed based on their positions in potential epitopes. Fra a 1.02 and mutants conform to the START fold. We show that the cross-reactivity of all the mutant variants to IgE from patients allergic to Bet v 1 was significantly reduced without altering the conserved structural fold, so that they could potentially be used as hypoallergenic Fra a 1 variants for the generation of vaccines against strawberry allergy in atopic patients.


    Organizational Affiliation

    Departamento de Biología Molecular y Bioquímica, Instituto de Hortofruticultura Subtropical y Mediterránea (IHSM), Universidad de Málaga-CSIC, 29016 Málaga, Spain.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Major strawberry allergen Fra a 1-2A, B163Fragaria x ananassaMutation(s): 1 
Gene Names: FRAA2
UniProt
Find proteins for D0E0C6 (Fragaria ananassa)
Explore D0E0C6 
Go to UniProtKB:  D0E0C6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupD0E0C6
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.27 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.205 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.836α = 90
b = 59.516β = 90
c = 131.218γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
STARANISOdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Ministry of Economy and CompetitivenessSpainBIO2013-33199-R
Ministry of Economy and CompetitivenessSpainBES-2014-068723

Revision History  (Full details and data files)

  • Version 1.0: 2019-12-18
    Type: Initial release
  • Version 1.1: 2020-01-15
    Changes: Database references
  • Version 1.2: 2020-10-07
    Changes: Database references