Introduction to algorithms
Gene functional classification from heterogeneous data
RECOMB '01 Proceedings of the fifth annual international conference on Computational biology
Prediction of Protein Function Using Protein-Protein Interaction Data
CSB '02 Proceedings of the IEEE Computer Society Conference on Bioinformatics
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Determination of protein function and biological pathway is one of the most challenging problems in the post-genomic era. To address this challenge, we have developed a new integrated probabilistic method for cellular function prediction using microarray gene expression profiles, in conjunction with predicted protein-protein interactions and annotations of known proteins. Our approach is based on a novel assessment for the relationship between correlation of two genes' expression profiles and their functional relationship in terms of the Gene Ontology (GO) hierarchy. We applied the method for function prediction of hypothetical genes in Arabidopsis. We have also extended our method using Dijkstra's algorithm to identify the components and topology of signaling pathway of phosphatidic acid as a second messenger in Arabidopsis.