5JT8 image
Entry Detail
PDB ID:
5JT8
Keywords:
ALLERGEN
Title:
Structural basis for the limited antibody cross reactivity between the mite allergens Blo t 1 and Der p 1
Biological Source:
Source Organism:
Blomia tropicalis
Host Organism:
Komagataella pastoris
PDB Version:
Deposition Date:
2016-05-09
Release Date:
2017-05-24
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.10 Å
R-Value Free:
0.21
R-Value Work:
0.17
R-Value Observed:
0.17
Space Group:
H 3
5JT8 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:Blo t 1 allergen
Chain IDs:A, B
Chain Length:333
Number of Molecules:2
Biological Source:Blomia tropicalis
UniProt ID:A1KXI0 Pfam ID:PF08246, PF00112
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
CSO A CYS modified residue
Ligand Molecules
CL
NAG
NO3
Primary Citation
The structure of the mite allergen Blo t 1 explains the limited antibody cross-reactivity to Der p 1.
Allergy 72 665 670 (2017)
PMID: 27997997 DOI: 10.1111/all.13111

Abstact

The Blomia tropicalis (Blo t) mite species is considered a storage mite in temperate climate zones and an important source of indoor allergens causing allergic asthma and rhinitis in tropical and subtropical regions. Here, we report the crystal structure of one of the allergens from Blo t, recombinant proBlo t 1 (rproBlo t 1), determined at 2.1 Å resolution. Overall, the fold of rproBlo t 1 is characteristic for the pro-form of cysteine proteases from the C1A class. Structural comparison of experimentally mapped Der f 1/Der p1 IgG epitopes to the same surface patch on Blo t 1, as well as of sequence identity of surface-exposed residues, suggests limited cross-reactivity between these allergens and Blo t 1. This is in agreement with ELISA inhibition results showing that, although cross-reactive human IgE epitopes exist, there are unique IgE epitopes for both Blo t 1 and Der p 1.

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Primary Citation of related structures
5JT8