ISSN:
1432-1432
Keywords:
Evolution strategy
;
Feature extraction
;
Filter induction
;
Neural network
;
Prediction
;
Signal peptidase
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary Four different artificial neural network architectures have been tested for their suitability to extract and predict sequence features. For optimization of the network weights an evolutionary computing method has been applied. The networks have feedforward architecture and provide adaptive neural filter systems for pattern recognition in primary structures and sequence classification. The recognition and prediction of signal peptidase cleavage sites ofE. coli periplasmic protein precursors serves as an example for filter development. The primary structures are represented by seven physicochemical residue properties. This amino acid description provides the feature space for network optimization. The properties hydrophobicity, hydrophilicity, side-chain volume, and polarity allowed an accurate classification of the data. A three-layer network architecture reached a learning success of 100%; the highest prediction accuracy in an independent test set of sequences was 97%. This network architecture appears to be most suited for the analysis ofE. coli signal peptidase cleavage sites. Further suggestions about the design and future applications of artificial neural networks for protein sequence analysis are made.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00556363
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