Welcome to the PathCase Metabolic Pathway Database System featuring KEGG pathways*. The menu bar to the left contains links to the main components of the website, including biological pathway, process, and molecular entity browsers, keyword search, powerful built-in queries, gene ontology viewer, and an advanced query interface which enables users to dynamically costruct customized query interfaces. Furthermore, you can use BiopaxViz tool to upload and visualize your own pathways or pathways from other data sources. The Web Resources section includes links to online biological data sources related to pathways.

The database contains:

• 147 Metabolic Pathways in 11 Categories
• 7645 Biological Processes
• 4994 Proteins
• 3327616 Genes
• 26149 Basic Molecules
• 91 Organism Groups
• 860 Organisms

* Kegg pathways were downloaded in July 2008.