3f5v

C2 Crystal form of mite allergen DER P 1

spinqualitylabelsall models 3f5v, resolution 1.36Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3f5v is a 2 chain structure with sequence from Dermatophagoides pteronyssinus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CA, P6G NonStd Res: CSD Gene: DERP1 (Dermatophagoides pteronyssinus) Activity: Peptidase 1 (mite), with EC number 3.4.22.65 Resources: FirstGlance, OCA, RCSB, PDBsum Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed The group 1 mite allergens Der f 1 and Der p 1 are potent allergens excreted by Dermatophagoides farinae and Dermatophagoides pteronyssinus, respectively. The human immunoglobulin E antibody responses to the group 1 allergens show more cross-reactivity than the murine immunoglobulin G antibody responses, which are largely species specific. Here, we report the crystal structure of the mature form of Der f 1, which was isolated from its natural source, and a new high-resolution structure of mature recombinant Der p 1. Unlike Der p 1, Der f 1 is monomeric both in the crystalline state and in solution. Moreover, no metal binding is observed in the structure of Der f 1 despite the fact that all amino acids involved in Ca(2+) binding in Der p 1 are completely conserved in Der f 1. Although Der p 1 and Der f 1 share an extensive sequence identity, comparison of the crystal structures of both allergens revealed structural features that could explain the differences in murine IgG and human IgE antibody responses to these allergens. There are structural differences between Der f 1 and Der p 1 that are unevenly distributed on the allergens' surfaces. This uneven spatial arrangement of conserved versus altered residues could explain both the specificity and cross-reactivity of antibodies against Der f 1 and Der p 1. Crystal structures of mite allergens Der f 1 and Der p 1 reveal differences in surface-exposed residues that may influence antibody binding.,Chruszcz M, Chapman MD, Vailes LD, Stura EA, Saint-Remy JM, Minor W, Pomes A J Mol Biol. 2009 Feb 20;386(2):520-30. Epub 2008 Dec 30. PMID:19136006 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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