4BK7

Crystal Structure of a variant of the Major Birch Pollen Allergen Bet v 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.14 Å
  • R-Value Free: 0.175 
  • R-Value Work: 0.134 

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This is version 1.1 of the entry. See complete history

Literature

Stabilization of the Dimeric Birch Pollen Allergen Bet V 1 Impacts its Immunological Properties

Kofler, S.G.Ackaert, C.Samonig, M.Asam, C.Briza, P.Horeis-Hoeck, J.Cabrele, C.Ferreira, F.Duschl, A.Huber, C.Brandstetter, H.

(2014) J.Biol.Chem. 289: 540

  • DOI: 10.1074/jbc.M113.518795
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Many allergens share several biophysical characteristics, including the capability to undergo oligomerization. The dimerization mechanism in Bet v 1 and its allergenic properties are so far poorly understood. Here, we report crystal structures of dim ...

    Many allergens share several biophysical characteristics, including the capability to undergo oligomerization. The dimerization mechanism in Bet v 1 and its allergenic properties are so far poorly understood. Here, we report crystal structures of dimeric Bet v 1, revealing a noncanonical incorporation of cysteine at position 5 instead of genetically encoded tyrosine. Cysteine polysulfide bridging stabilized different dimeric assemblies, depending on the polysulfide linker length. These dimers represent quaternary arrangements that are frequently observed in related proteins, reflecting their prevalence in unmodified Bet v 1. These conclusions were corroborated by characteristic immunologic properties of monomeric and dimeric allergen variants. Hereby, residue 5 could be identified as an allergenic hot spot in Bet v 1. The presented results refine fundamental principles in protein chemistry and emphasize the importance of protein modifications in understanding the molecular basis of allergenicity.


    Organizational Affiliation

    From the Structural Biology Group, Department of Molecular Biology.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MAJOR POLLEN ALLERGEN BET V 1-A
A
159Betula pendulaMutation(s): 1 
Gene Names: BETVIA (BETVI)
Find proteins for P15494 (Betula pendula)
Go to UniProtKB:  P15494
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

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A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

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A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
MPD
Query on MPD

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A
(4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.14 Å
  • R-Value Free: 0.175 
  • R-Value Work: 0.134 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 32.732α = 90.00
b = 55.811β = 93.25
c = 38.099γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
PHASERphasing
SCALAdata scaling
iMOSFLMdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History 

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