Ontology (2)   
   KEGG BRITE (2)   
Pathway (1172)   
   KEGG PATHWAY (1171)   
   KEGG MODULE (1)   
Drug (1)   
   KEGG DRUG (1)   
Chemical substance (21)   
   PubChem (1)   
   ChEBI (1)   
   3DMET (1)   
   HMDB (1)   
   KNAPSACK (1)   
   MASSBANK (15)   
   NIKKAJI (1)   
Chemical reaction (7)   
   KEGG ENZYME (2)   
   KEGG REACTION (2)   
   KEGG RPAIR (3)   
All databases (1203)