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2013 ; 7 Suppl 5
(Suppl 5
): S9
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PREAL: prediction of allergenic protein by maximum Relevance Minimum Redundancy
(mRMR) feature selection
#MMPMID24565053
Wang J
; Zhang D
; Li J
BMC Syst Biol
2013[]; 7 Suppl 5
(Suppl 5
): S9
PMID24565053
show ga
BACKGROUND: Assessment of potential allergenicity of protein is necessary
whenever transgenic proteins are introduced into the food chain. Bioinformatics
approaches in allergen prediction have evolved appreciably in recent years to
increase sophistication and performance. However, what are the critical features
for protein's allergenicity have been not fully investigated yet. RESULTS: We
presented a more comprehensive model in 128 features space for allergenic
proteins prediction by integrating various properties of proteins, such as
biochemical and physicochemical properties, sequential features and subcellular
locations. The overall accuracy in the cross-validation reached 93.42% to 100%
with our new method. Maximum Relevance Minimum Redundancy (mRMR) method and
Incremental Feature Selection (IFS) procedure were applied to obtain which
features are essential for allergenicity. Results of the performance comparisons
showed the superior of our method to the existing methods used widely. More
importantly, it was observed that the features of subcellular locations and amino
acid composition played major roles in determining the allergenicity of proteins,
particularly extracellular/cell surface and vacuole of the subcellular locations
for wheat and soybean. To facilitate the allergen prediction, we implemented our
computational method in a web application, which can be available at
http://gmobl.sjtu.edu.cn/PREAL/index.php. CONCLUSIONS: Our new approach could
improve the accuracy of allergen prediction. And the findings may provide novel
insights for the mechanism of allergies.