KEGG

KEGG is a suite of databases and associated software, integrating our current knowledge on molecular interaction networks in biological processes (PATHWAY database), the information about the universe of genes and proteins (GENES/SSDB/KO databases), and the information about the universe of chemical compounds and reactions (COMPOUND/REACTION databases).
The KEGG system is an attempt to uncover and utilize cellular functions through reconstruction of protein interaction networks from the genome information, including gene expression profiles both at the mRNA and protein levels and a catalog of protein 3D structure families.

responsible: kanehisa@kuicr.kyoto-u.ac.jp (Minoru Kanehisa, Kyoto)