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Bioinformatics Advance Access originally published online on October 18, 2005
Bioinformatics 2005 21(24):4401-4407; doi:10.1093/bioinformatics/bti718
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© The Author 2005. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions{at}oxfordjournals.org

Representations of molecular pathways: an evaluation of SBML, PSI MI and BioPAX

Lena Strömbäck * and Patrick Lambrix

Department of Computer and Information Science, Linköpings universitet S-581 83 Linköping, Sweden

*To whom correspondence should be addressed.

Motivation: Analysis and simulation of pathway data is of high importance in bioinformatics. Standards for representation of information about pathways are necessary for integration and analysis of data from various sources. Recently, a number of representation formats for pathway data, SBML, PSI MI and BioPAX, have been proposed.

Results: In this paper we compare these formats and evaluate them with respect to their underlying models, information content and possibilities for easy creation of tools. The evaluation shows that the main structure of the formats is similar. However, SBML is tuned towards simulation models of molecular pathways while PSI MI is more suitable for representing details about particular interactions and experiments. BioPAX is the most general and expressive of the formats. These differences are apparent in allowed information and the structure for representation of interactions. We discuss the impact of these differences both with respect to information content in existing databases and computational properties for import and analysis of data.

Contact: lestr{at}ida.liu.se

Received on December 16, 2004; revised on August 29, 2005; accepted on October 13, 2005

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