ISDA

Deposition Date 2004-11-02

Release Date 2004-12-14

Last Version Date 2024-11-06

Entry Detail

PDB ID:

1XWV

Keywords:

ALLERGEN

Title:

Structure of the house dust mite allergen Der f 2: Implications for function and molecular basis of IgE cross-reactivity

Biological Source:

Source Organism:

Dermatophagoides farinae (Taxon ID: 6954)

Host Organism:

Pichia pastoris

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.83 Å

R-Value Free:

0.25

R-Value Work:

0.22

R-Value Observed:

0.22

Space Group:

P 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Der f II
Gene (Uniprot):DERF2
Chain IDs:A, B
Chain Length:129
Number of Molecules:2
Biological Source:Dermatophagoides farinae

UniProt ID:Q00855 Pfam ID:PF02221

Ligand Molecules

PE3

XPE

Primary Citation

Structure of the house dust mite allergen Der f 2: implications for function and molecular basis of IgE cross-reactivity.

Johannessen, B.R, Skov, L.K, Kastrup, J.S, Kristensen, O, Bolwig, C, Larsen, J.N, Spangfort, M, Lund, K, Gajhede, M.Show

Febs Lett. 579 1208 1212 (2005)

PMID: 15710415 DOI: 10.1016/j.febslet.2004.11.115

Abstact

The X-ray structure of the group 2 major allergen from Dermatophagoides farinae (Der f 2) was determined to 1.83 A resolution. The overall Der f 2 structure comprises a single domain of immunoglobulin fold with two anti-parallel beta-sheets. A large hydrophobic cavity is formed in the interior of Der f 2. Structural comparisons to distantly related proteins suggest a role in lipid binding. Immunoglobulin E (IgE) cross-reactivity between group 2 house dust mite major allergens can be explained by conserved surface areas representing IgE binding epitopes.

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Primary Citation of related structures