7LVF

Jug R 2 Leader Sequence Residues 1-57


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: all calculated structures submitted 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure, Immunogenicity, and IgE Cross-Reactivity among Walnut and Peanut Vicilin-Buried Peptides.

Foo, A.C.Y.Nesbit, J.B.Gipson, S.A.Y.Cheng, H.Bushel, P.DeRose, E.F.Schein, C.H.Teuber, S.S.Hurlburt, B.K.Maleki, S.J.Mueller, G.A.

(2022) J Agric Food Chem 70: 2389-2400

  • DOI: https://doi.org/10.1021/acs.jafc.1c07225
  • Primary Citation of Related Structures:  
    7LVE, 7LVF, 7LVG, 7LXK

  • PubMed Abstract: 

    Vicilin-buried peptides (VBPs) from edible plants are derived from the N-terminal leader sequences (LSs) of seed storage proteins. VBPs are defined by a common α-hairpin fold mediated by conserved CxxxCx (10-14) CxxxC motifs. Here, peanut and walnut VBPs were characterized as potential mediators of both peanut/walnut allergenicity and cross-reactivity despite their low (∼17%) sequence identity. The structures of one peanut (AH1.1) and 3 walnut (JR2.1, JR2.2, JR2.3) VBPs were solved using solution NMR, revealing similar α-hairpin structures stabilized by disulfide bonds with high levels of surface similarity. Peptide microarrays identified several peptide sequences primarily on AH1.1 and JR2.1, which were recognized by peanut-, walnut-, and dual-allergic patient IgE, establishing these peanut and walnut VBPs as potential mediators of allergenicity and cross-reactivity. JR2.2 and JR2.3 displayed extreme resilience against endosomal digestion, potentially hindering epitope generation and likely contributing to their reduced allergic potential.


  • Organizational Affiliation

    National Institute of Environmental Health Sciences, 111 T.W. Alexander Dr, MD-MR01, Research Triangle Park, North Carolina 27615, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Vicilin Jug r 2.010157Juglans regiaMutation(s): 0 
UniProt
Find proteins for Q9SEW4 (Juglans regia)
Explore Q9SEW4 
Go to UniProtKB:  Q9SEW4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9SEW4
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: all calculated structures submitted 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Environmental Health Sciences (NIH/NIEHS)United StatesZ01-ES102906

Revision History  (Full details and data files)

  • Version 1.0: 2022-02-02
    Type: Initial release
  • Version 1.1: 2022-02-23
    Changes: Database references
  • Version 1.2: 2022-03-09
    Changes: Database references
  • Version 1.3: 2023-06-14
    Changes: Other