Kyoto Encyclopedia of Genes and Genomes (KEGG)
http://www.genome.ad.jp/
It provides information about:
- Global map interface
- Pathways
- Ontology
- Genes
- Ligands
- Organism specific entry point
- Disease
- Drug
- Glycan
Different tools which are available on this database are:
- Sequence analysis
- Genome analysis
- Chemical analysis