2F08 image
Deposition Date 2005-11-12
Release Date 2005-11-29
Last Version Date 2024-11-13
Entry Detail
PDB ID:
2F08
Keywords:
Title:
Crystal structure of a major house dust mite allergen, Derf 2
Biological Source:
Source Organism:
Host Organism:
Method Details:
Experimental Method:
Resolution:
2.20 Å
R-Value Free:
0.24
R-Value Work:
0.20
R-Value Observed:
0.20
Space Group:
C 1 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:mite allergen Der f II
Gene (Uniprot):DERF2
Chain IDs:A, B, C, D
Chain Length:129
Number of Molecules:4
Biological Source:Dermatophagoides farinae
Ligand Molecules
Primary Citation
Crystal structure and some properties of a major house dust mite allergen, Derf 2
Biochem.Biophys.Res.Commun. 339 679 686 (2006)
PMID: 16313885 DOI: 10.1016/j.bbrc.2005.11.065

Abstact

Pyroglyphid house dust mites are a major source of allergens in house dust. Mite allergens sensitize and induce asthma, rhinitis, and eczema in a large portion of patients with allergic diseases. Here, the crystal structure of a major mite allergen, Derf 2, derived from Dermatophagoides farinae was solved by single isomorphous replacement method with anomalous scattering (SIRAS) at 2.1A resolution. The present study also demonstrated that the conformation of the allergen was critical in the determination of Th1/Th2 shift based on physicochemical and immunological analyses. This indicates that rigidly folded and singly dispersed structure is essentially required for the generation of Th2 type cells by the allergen, while conformational variant protein leads to Th1 skewing, irrespective of the same amino acid sequence. This structure/function relationship may allow us to develop a novel strategy for hyposensitization therapy in patients with allergic diseases triggered by house dust mite allergens.

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Primary Citation of related structures