3-D Model of the bee venom acid phosphatase: insights into allergenicity.

Abstract:

:The acid phosphatase Api m 3 is the major allergen of the honeybee venom. Except for the amino acid sequence, no other structural information for the enzyme is available. We applied homology modeling to assign the three-dimensional structure of Api m 3. The structure of the homodimeric human prostatic acid phosphatase was used to model the Api m 3 tertiary structure. IgE epitopes and antigenic sites were predicted using programs based on the structure of known epitopes and analysis of the 3-D model. The model of Api m 3 revealed an active site similar to those of the histidine-type acid phosphatases with conservation of the catalytically important residues. The observed substitutions in the phosphate ion binding site suggest differences in the substrate specificity in comparison to other acid phosphatases. The analysis of the Api m 3 three-dimensional model revealed a very likely mechanism of enzyme action.

authors

Georgieva D,Greunke K,Genov N,Betzel C

doi

10.1016/j.bbrc.2008.11.101

subject

Has Abstract

pub_date

2009-01-23 00:00:00

pages

711-5

issue

4

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(08)02287-0

journal_volume

378

pub_type

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