4X9U

Crystal structure of the kiwifruit allergen Act d 5


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.168 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Elusive Structural, Functional, and Immunological Features of Act d 5, the Green Kiwifruit Kiwellin.

Offermann, L.R.Giangrieco, I.Perdue, M.L.Zuzzi, S.Santoro, M.Tamburrini, M.Cosgrove, D.J.Mari, A.Ciardiello, M.A.Chruszcz, M.

(2015) J.Agric.Food Chem. 63: 6567-6576

  • DOI: 10.1021/acs.jafc.5b02159

  • PubMed Abstract: 
  • Kiwellin (Act d 5) is an allergenic protein contained in kiwifruit pulp in high amounts. The aim of this study was to investigate the three-dimensional structure of the natural molecule from green kiwifruit and its possible function. Kiwellin was cry ...

    Kiwellin (Act d 5) is an allergenic protein contained in kiwifruit pulp in high amounts. The aim of this study was to investigate the three-dimensional structure of the natural molecule from green kiwifruit and its possible function. Kiwellin was crystallized, and its structure, including post-translational modifications, was elucidated. The molecular weight and structural features, in solution, were analyzed by gel filtration and circular dichroism, respectively. Although structurally similar to expansin, kiwellin lacks expansin activity and carbohydrate binding. A specific algorithm was applied to investigate any possible IgE reactivity correlation between kiwellin and a panel of 102 allergens, including expansins and other carbohydrate-binding allergens. The available data suggest a strong dependence of the kiwellin structure on the environmental/experimental conditions. This dependence therefore poses challenges in detecting the correlations between structural, functional, and immunological features of this protein.


    Organizational Affiliation

    †Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Kiwellin
A, B
189Actinidia deliciosaMutation(s): 0 
Find proteins for P84527 (Actinidia deliciosa)
Go to UniProtKB:  P84527
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PXU
Query on PXU
A, B
L-PEPTIDE LINKINGC5 H9 N O3PRO
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.168 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 52.392α = 90.00
b = 60.417β = 95.85
c = 55.601γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-2000data collection
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-07-29
    Type: Initial release
  • Version 1.1: 2015-08-12
    Type: Database references
  • Version 1.2: 2017-11-22
    Type: Derived calculations, Refinement description