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Protein secondary structure prediction with Bayesian learning method

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2 Author(s)
Peng-Liang Wang ; Dept. of Comput. Sci., California State Univ., Sacramento, CA, USA ; Du Zhang

This paper describes a Bayesian learning based approach to protein secondary structure prediction. Four secondary structure types are considered, including α-helix, β-strand, β-turn and coil. A six-letter exchange group is utilized to represent a protein sequence. Training cases are expressed as sequence quaternion. A tool called Predictor is developed in Java that implements the proposed approach. To evaluate the tool, we select, from the protein data bank and based on the principle of one-protein-per-family according to the structure family of SCOP, six hundred and twenty-three known proteins without pair wise sequence homology. Several training/test data splits have been tried. The results show that our proposed approach can produce prediction accuracy comparable to those of the traditional prediction methods. Predictor has user-friendly and easy-to-use GUIs, and is of practical value to the molecular biology researchers.

Published in:

Tools with Artificial Intelligence, 2002. (ICTAI 2002). Proceedings. 14th IEEE International Conference on

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