Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 16.66 kDa 
• Atom Count: 1176 
• Modelled Residue Count: 157 
• Deposited Residue Count: 157 
• Unique protein chains: 1

2K7H

NMR solution structure of soybean allergen Gly m 4

• PDB DOI: 10.2210/pdb2K7H/pdb

• Classification: ALLERGEN
• Organism(s): Glycine max
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2008-08-11 Released: 2009-05-05 
• Deposition Author(s): Berkner, H., Neudecker, P., Mittag, D., Ballmer-Weber, B.K., Schweimer, K., Vieths, S., Roesch, P.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 25 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Cross-reactivity of pollen and food allergens: soybean Gly m 4 is a member of the Bet v 1 superfamily and closely resembles yellow lupine proteins

Berkner, H., Neudecker, P., Mittag, D., Ballmer-Weber, B.K., Schweimer, K., Vieths, S.

(2009) Biosci Rep 29: 183-192

• PubMed: 18834331 
• DOI: 10.1042/BSR20080117
• Primary Citation of Related Structures:  
  2K7H


• PubMed Abstract: 
  

In many cases, patients allergic to birch pollen also show allergic reactions after ingestion of certain fruits or vegetables. This observation is explained at the molecular level by cross-reactivity of IgE antibodies induced by sensitization to the major birch pollen allergen Bet v 1 with homologous food allergens. As IgE antibodies recognize conformational epitopes, a precise structural characterization of the allergens involved is necessary to understand cross-reactivity and thus to develop new methods of allergen-specific immunotherapy for allergic patients. Here, we report the three-dimensional solution structure of the soybean allergen Gly m 4, a member of the superfamily of Bet v 1 homologous proteins and a cross-reactant with IgE antibodies originally raised against Bet v 1 as shown by immunoblot inhibition and histamine release assays. Although the overall fold of Gly m 4 is very similar to that of Bet v 1, the three-dimensional structures of these proteins differ in detail. The Gly m 4 local structures that display those differences are also found in proteins from yellow lupine with known physiological function. The three-dimensional structure of Gly m 4 may thus shed some light on the physiological function of this subgroup of PR10 proteins (class 10 of pathogenesis-related proteins) and, in combination with immunological data, allow us to propose surface patches that might represent cross-reactive epitopes.

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Organizational Affiliation: 

Department of Biopolymers and Research Center for Bio-Macromolecules, Universität Bayreuth, Universitätsstrasse 30, 95447 Bayreuth, Germany.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Stress-induced protein SAM22	A	157	Glycine max	Mutation(s): 0  Gene Names: PR-10, GLYMA_07G243500
UniProt
Find proteins for P26987 (Glycine max) Explore P26987  Go to UniProtKB:  P26987

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 25 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 2K7H Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2008-08-11 
• Released Date: 2009-05-05 
Deposition Author(s): Berkner, H., Neudecker, P., Mittag, D., Ballmer-Weber, B.K., Schweimer, K., Vieths, S., Roesch, P.

Revision History  

• Version 1.0: 2009-05-05
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2022-03-16
  Changes: Data collection, Database references, Derived calculations