BiologicalNetworks BiologicalNetworks


The PathSys System

PathSys is a graph-based system for creating a combined database of biological pathways, gene regulatory networks and protein interaction maps.

PathSys is a general-purpose, scalable warehouse of biological information, complete with a graph manipulation and a query language, a storage mechanism and a generic data-importing mechanism through schema-mapping.

In PathSys are integrated over 14 curated and publicly contributed data sources for the 8 representative organisms (see list below), as well as Gene Ontology, which is structured as an acyclic graph.

The organisms are:
  • Budding Yeast (Saccharomices cerevisiae)
  • Schizosaccharomyces pombe
  • Fly (Drosophila melanogaster)
  • Caenorhabditis elegans
  • Arabidopsis thaliana
  • Mouse (Mus musculis)
  • Human (Homo sapience)
  • Zebrafish (Danio rerio)

The data sources are:
  • Co-immunoprecipitation data (Gavin, A. C. et al. (2002) "Functional organization of the yeast proteome by systematic analysis of protein complexes". Nature, 415, 141147.)
  • Co-immunoprecipitation data (Ho, Y. et al. (2002) "Systematic identification of protein complexes in saccharomyces cerevisiae by mass spectrometry". Nature, 415, 180183.)
  • Yeast-two hybrid data (Ito, T. et al. (2001) "A comprehensive two-hybrid analysis to explore the yeast protein interactome". Proc Natl Acad Sci U S A. 98, 4569-74 . )
  • Yeast-two hybrid data (Uetz, P. et al. (2000) "A comprehensive analysis of protein-protein interactions in Saccharomyces cerevisiae". Nature 403,623-7.)
  • Genetic interaction data (Tong, A. H. Y. et al. (2001) "Systematic genetic analysis with ordered arrays of yeast deletion mutants". Science, 294, 23642368.)
  • Genetic interaction data (Tong, A.H. et al. "Global mapping of the yeast genetic interaction network". Science 303, 808-13 (2004).)
  • MIT data, (Lee, T. et al. (2002) "Transcriptional regulatory networks in Saccharomyces cerevisiae". Science, 298, 799804.)
  • UCSF localization data (Huh, W.K. et al. (2003), "Global analysis of protein localization in budding yeast". Nature 425,686-91.)
  • MIPS data (
  • CSH data (
  • Transfac (
  • BIND database (
  • pre-BIND database (
  • KEGG (